diff --git a/.gitignore b/.gitignore
index 566a229..e8cb62b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 node_modules/
-build/
+#build/
 tmp/
 *.local
 *.local.*
diff --git a/README.md b/README.md
index d3e9c58..4b617e8 100644
--- a/README.md
+++ b/README.md
@@ -54,3 +54,7 @@ import { MyCollections } from "./my-collections.d.ts";
 
 const directus = new Directus<MyCollections>();
 ```
+
+## System Collections
+
+Directus system collections are not included in the output by default. If you add custom fields to a collection like `directus_users`, you can include them in the generated types by using the `--includeSystemCollections` flag.
diff --git a/build/cli.cjs b/build/cli.cjs
new file mode 100755
index 0000000..b1aaf3f
--- /dev/null
+++ b/build/cli.cjs
@@ -0,0 +1,210 @@
+#!/usr/bin/env node
+"use strict";
+var __create = Object.create;
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
+  // If the importer is in node compatibility mode or this is not an ESM
+  // file that has been converted to a CommonJS file using a Babel-
+  // compatible transform (i.e. "__esModule" has not been set), then set
+  // "default" to the CommonJS "module.exports" for node compatibility.
+  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
+  mod
+));
+
+// src/cli.ts
+var import_promises2 = require("fs/promises");
+var import_path = require("path");
+var import_yargs = __toESM(require("yargs"), 1);
+
+// src/index.ts
+var import_promises = require("fs/promises");
+var import_openapi_typescript = __toESM(require("openapi-typescript"), 1);
+var import_zod = require("zod");
+var DirectusAuthResponse = import_zod.z.object({
+  data: import_zod.z.object({
+    access_token: import_zod.z.string(),
+    expires: import_zod.z.number().int(),
+    refresh_token: import_zod.z.string()
+  })
+});
+var readSpecFile = async (options) => {
+  if (typeof options.specFile === `string`) {
+    return JSON.parse(
+      await (0, import_promises.readFile)(options.specFile, { encoding: `utf-8` })
+    );
+  }
+  if (typeof options.host !== `string`) {
+    throw new Error(`Either inputFile or inputUrl must be specified`);
+  }
+  if (typeof options.email !== `string`) {
+    throw new Error(`email must be specified`);
+  }
+  if (typeof options.password !== `string`) {
+    throw new Error(`password must be specified`);
+  }
+  const {
+    data: { access_token }
+  } = await fetch(new URL(`/auth/login`, options.host), {
+    body: JSON.stringify({
+      email: options.email,
+      password: options.password
+    }),
+    headers: {
+      "Content-Type": `application/json`
+    },
+    method: `POST`
+  }).then((response) => response.json()).then((json) => DirectusAuthResponse.parse(json));
+  return await fetch(new URL(`/server/specs/oas`, options.host), {
+    headers: {
+      "Authorization": `Bearer ${access_token}`,
+      "Content-Type": `application/json`
+    }
+  }).then((response) => response.json());
+};
+var validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;
+var generateTypeScript = async (spec, { includeSystemCollections, typeName }) => {
+  if (!validIdentifier.test(typeName)) {
+    throw new Error(`Invalid type name: ${typeName}`);
+  }
+  let source = await (0, import_openapi_typescript.default)(spec);
+  source += `
+
+export type ${typeName} = {
+`;
+  const collections = {};
+  if (spec.paths) {
+    for (const [path, pathItem] of Object.entries(spec.paths)) {
+      const collectionPathPattern = /^\/items\/(?<collection>[a-zA-Z0-9_]+)$/;
+      const collection = collectionPathPattern.exec(path)?.groups?.[`collection`];
+      if (typeof collection !== `string` || collection.length === 0) {
+        continue;
+      }
+      if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+        const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+        const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+        const ref = refPattern.exec($ref)?.groups?.[`ref`];
+        if (typeof ref !== `string` || ref.length === 0) {
+          continue;
+        }
+        if (!collections[collection]) {
+          collections[collection] = `components["schemas"]["${ref}"][]`;
+        }
+      }
+    }
+  }
+  const relationshipPathPattern = /^\/relations\/(?<relation>[a-zA-Z0-9_]+)$/;
+  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {
+    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];
+    if (typeof relation !== `string` || relation.length === 0) {
+      continue;
+    }
+    if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+      const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+      const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+      const ref = refPattern.exec($ref)?.groups?.[`ref`];
+      if (typeof ref !== `string` || ref.length === 0) {
+        continue;
+      }
+      if (!collections[relation]) {
+        collections[relation] = `components["schemas"]["${ref}"][]`;
+      }
+    }
+  }
+  if (spec.components && spec.components.schemas && includeSystemCollections) {
+    for (const [schema_key, schema_value] of Object.entries(
+      spec.components.schemas
+    )) {
+      const x_collection = schema_value[`x-collection`];
+      if (typeof x_collection === `string` && x_collection.length > 0) {
+        if (!collections[x_collection]) {
+          collections[x_collection] = `components["schemas"]["${schema_key}"]`;
+        }
+      }
+    }
+  }
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    source += `  ${collectionName}: ${typeDef};
+`;
+  }
+  source += `};
+`;
+  const toPascalCase = (str) => str.replace(/[_\- ]+/g, ` `).split(` `).map((word) => word.charAt(0).toUpperCase() + word.slice(1)).join(``);
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    const pascalCaseName = toPascalCase(collectionName);
+    source += `export type ${pascalCaseName} = ${typeDef};
+`;
+  }
+  return source;
+};
+
+// src/cli.ts
+var main = async () => {
+  const argv = await import_yargs.default.options({
+    email: {
+      alias: `e`,
+      description: `Email address`,
+      type: `string`
+    },
+    host: {
+      alias: `h`,
+      description: `Remote host`,
+      type: `string`
+    },
+    includeSystemCollections: {
+      alias: `s`,
+      default: false,
+      description: `Include system collections`,
+      type: `boolean`
+    },
+    outFile: {
+      alias: `o`,
+      description: `Output file`,
+      type: `string`
+    },
+    password: {
+      alias: `p`,
+      description: `Password`,
+      type: `string`
+    },
+    specFile: {
+      alias: `i`,
+      description: `Input spec file`,
+      type: `string`
+    },
+    typeName: {
+      alias: `t`,
+      default: `Schema`,
+      description: `Type name`,
+      type: `string`
+    }
+  }).argv;
+  const spec = await readSpecFile(argv);
+  const ts = await generateTypeScript(spec, {
+    includeSystemCollections: argv.includeSystemCollections,
+    typeName: argv.typeName
+  });
+  if (typeof argv.outFile === `string`) {
+    await (0, import_promises2.writeFile)((0, import_path.resolve)(process.cwd(), argv.outFile), ts, {
+      encoding: `utf-8`
+    });
+  } else {
+    console.log(ts);
+  }
+};
+main().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
+//# sourceMappingURL=cli.cjs.map
diff --git a/build/cli.cjs.map b/build/cli.cjs.map
new file mode 100644
index 0000000..91f4747
--- /dev/null
+++ b/build/cli.cjs.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../src/cli.ts", "../src/index.ts"],
+  "sourcesContent": ["#!/usr/bin/env node\n\nimport { writeFile } from \"fs/promises\";\nimport { resolve } from \"path\";\n\nimport yargs from \"yargs\";\nimport type { OpenAPI3 } from \"openapi-typescript\";\n\nimport { generateTypeScript, readSpecFile } from \".\";\n\nconst main = async (): Promise<void> => {\n  const argv = await yargs.options({\n    email: {\n      alias: `e`,\n      description: `Email address`,\n      type: `string`,\n    },\n    host: {\n      alias: `h`,\n      description: `Remote host`,\n      type: `string`,\n    },\n    includeSystemCollections: {\n      alias: `s`,\n      default: false,\n      description: `Include system collections`,\n      type: `boolean`,\n    },\n    outFile: {\n      alias: `o`,\n      description: `Output file`,\n      type: `string`,\n    },\n    password: {\n      alias: `p`,\n      description: `Password`,\n      type: `string`,\n    },\n    specFile: {\n      alias: `i`,\n      description: `Input spec file`,\n      type: `string`,\n    },\n    typeName: {\n      alias: `t`,\n      default: `Schema`,\n      description: `Type name`,\n      type: `string`,\n    },\n  }).argv;\n\n  const spec = await readSpecFile(argv);\n\n  const ts = await generateTypeScript(spec as OpenAPI3, {\n    includeSystemCollections: argv.includeSystemCollections,\n    typeName: argv.typeName,\n  });\n\n  if (typeof argv.outFile === `string`) {\n    await writeFile(resolve(process.cwd(), argv.outFile), ts, {\n      encoding: `utf-8`,\n    });\n  } else {\n    console.log(ts);\n  }\n};\n\nmain().catch((error) => {\n  console.error(error);\n  process.exit(1);\n});\n", "import { readFile } from \"fs/promises\";\n\nimport type { OpenAPI3 } from \"openapi-typescript\";\nimport openapiTS from \"openapi-typescript\";\nimport { z } from \"zod\";\n\ntype ReadSpecFileOptions = {\n  readonly specFile?: undefined | string;\n  readonly host?: undefined | string;\n  readonly email?: undefined | string;\n  readonly password?: undefined | string;\n};\n\nconst DirectusAuthResponse = z.object({\n  data: z.object({\n    access_token: z.string(),\n    expires: z.number().int(),\n    refresh_token: z.string(),\n  }),\n});\n\nexport const readSpecFile = async (\n  options: ReadSpecFileOptions,\n): Promise<unknown> => {\n  if (typeof options.specFile === `string`) {\n    return JSON.parse(\n      await readFile(options.specFile, { encoding: `utf-8` }),\n    ) as unknown;\n  }\n\n  if (typeof options.host !== `string`) {\n    throw new Error(`Either inputFile or inputUrl must be specified`);\n  }\n  if (typeof options.email !== `string`) {\n    throw new Error(`email must be specified`);\n  }\n  if (typeof options.password !== `string`) {\n    throw new Error(`password must be specified`);\n  }\n\n  const {\n    data: { access_token },\n  } = await fetch(new URL(`/auth/login`, options.host), {\n    body: JSON.stringify({\n      email: options.email,\n      password: options.password,\n    }),\n    headers: {\n      \"Content-Type\": `application/json`,\n    },\n    method: `POST`,\n  })\n    .then((response) => response.json())\n    .then((json) => DirectusAuthResponse.parse(json));\n\n  return (await fetch(new URL(`/server/specs/oas`, options.host), {\n    headers: {\n      \"Authorization\": `Bearer ${access_token}`,\n      \"Content-Type\": `application/json`,\n    },\n  }).then((response) => response.json())) as unknown;\n};\n\ntype GenerateTypeScriptOptions = {\n  readonly includeSystemCollections?: boolean;\n  readonly typeName: string;\n};\n\nconst validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;\n\nexport const generateTypeScript = async (\n  spec: OpenAPI3,\n  { includeSystemCollections, typeName }: GenerateTypeScriptOptions,\n): Promise<string> => {\n  if (!validIdentifier.test(typeName)) {\n    throw new Error(`Invalid type name: ${typeName}`);\n  }\n\n  let source = await openapiTS(spec);\n\n  source += `\\n\\nexport type ${typeName} = {\\n`;\n\n  // Keep a record of discovered collections to avoid duplicates\n  const collections: Record<string, string> = {};\n\n  if (spec.paths) {\n    for (const [path, pathItem] of Object.entries(spec.paths)) {\n      const collectionPathPattern = /^\\/items\\/(?<collection>[a-zA-Z0-9_]+)$/;\n      const collection =\n        collectionPathPattern.exec(path)?.groups?.[`collection`];\n      if (typeof collection !== `string` || collection.length === 0) {\n        continue;\n      }\n      if (\n        `get` in pathItem &&\n        `responses` in pathItem.get &&\n        `200` in pathItem.get.responses &&\n        `content` in pathItem.get.responses[`200`] &&\n        `application/json` in pathItem.get.responses[`200`].content &&\n        `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n        `properties` in\n          pathItem.get.responses[`200`].content[`application/json`].schema &&\n        `data` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties &&\n        `items` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`] &&\n        `$ref` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items\n      ) {\n        const $ref =\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items.$ref;\n        const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n        const ref = refPattern.exec($ref)?.groups?.[`ref`];\n        if (typeof ref !== `string` || ref.length === 0) {\n          continue;\n        }\n        // Instead of adding directly to source, store in collections\n        if (!collections[collection]) {\n          collections[collection] = `components[\"schemas\"][\"${ref}\"][]`;\n        }\n      }\n    }\n  }\n\n  // fixing relationships\n  const relationshipPathPattern = /^\\/relations\\/(?<relation>[a-zA-Z0-9_]+)$/;\n  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {\n    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];\n    if (typeof relation !== `string` || relation.length === 0) {\n      continue;\n    }\n    if (\n      `get` in pathItem &&\n      `responses` in pathItem.get &&\n      `200` in pathItem.get.responses &&\n      `content` in pathItem.get.responses[`200`] &&\n      `application/json` in pathItem.get.responses[`200`].content &&\n      `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n      `properties` in\n        pathItem.get.responses[`200`].content[`application/json`].schema &&\n      `data` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties &&\n      `items` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`] &&\n      `$ref` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items\n    ) {\n      const $ref =\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items.$ref;\n      const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n      const ref = refPattern.exec($ref)?.groups?.[`ref`];\n      if (typeof ref !== `string` || ref.length === 0) {\n        continue;\n      }\n      // Add relationship to collections\n      if (!collections[relation]) {\n        collections[relation] = `components[\"schemas\"][\"${ref}\"][]`;\n      }\n    }\n  }\n\n  // Add directus system collections if requested\n  if (spec.components && spec.components.schemas && includeSystemCollections) {\n    for (const [schema_key, schema_value] of Object.entries(\n      spec.components.schemas,\n    )) {\n      const x_collection = (schema_value as Record<string, unknown>)[\n        `x-collection`\n      ] as string | undefined;\n      if (typeof x_collection === `string` && x_collection.length > 0) {\n        // Only add if not already present\n        if (!collections[x_collection]) {\n          collections[x_collection] = `components[\"schemas\"][\"${schema_key}\"]`;\n        }\n      }\n    }\n  }\n\n  // After gathering all collections, write them out once\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    source += `  ${collectionName}: ${typeDef};\\n`;\n  }\n\n  source += `};\\n`;\n\n  const toPascalCase = (str: string): string =>\n    str\n      .replace(/[_\\- ]+/g, ` `)\n      .split(` `)\n      .map((word) => word.charAt(0).toUpperCase() + word.slice(1))\n      .join(``);\n\n  // Iterate over each collection to create individual export types\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    const pascalCaseName = toPascalCase(collectionName);\n    source += `export type ${pascalCaseName} = ${typeDef};\\n`;\n  }\n\n  return source;\n};\n"],
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+  "names": ["import_promises", "openapiTS", "yargs"]
+}
diff --git a/build/cli.d.ts b/build/cli.d.ts
new file mode 100644
index 0000000..b798801
--- /dev/null
+++ b/build/cli.d.ts
@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+export {};
diff --git a/build/cli.mjs b/build/cli.mjs
new file mode 100755
index 0000000..c838e95
--- /dev/null
+++ b/build/cli.mjs
@@ -0,0 +1,187 @@
+#!/usr/bin/env node
+
+// src/cli.ts
+import { writeFile } from "fs/promises";
+import { resolve } from "path";
+import yargs from "yargs";
+
+// src/index.ts
+import { readFile } from "fs/promises";
+import openapiTS from "openapi-typescript";
+import { z } from "zod";
+var DirectusAuthResponse = z.object({
+  data: z.object({
+    access_token: z.string(),
+    expires: z.number().int(),
+    refresh_token: z.string()
+  })
+});
+var readSpecFile = async (options) => {
+  if (typeof options.specFile === `string`) {
+    return JSON.parse(
+      await readFile(options.specFile, { encoding: `utf-8` })
+    );
+  }
+  if (typeof options.host !== `string`) {
+    throw new Error(`Either inputFile or inputUrl must be specified`);
+  }
+  if (typeof options.email !== `string`) {
+    throw new Error(`email must be specified`);
+  }
+  if (typeof options.password !== `string`) {
+    throw new Error(`password must be specified`);
+  }
+  const {
+    data: { access_token }
+  } = await fetch(new URL(`/auth/login`, options.host), {
+    body: JSON.stringify({
+      email: options.email,
+      password: options.password
+    }),
+    headers: {
+      "Content-Type": `application/json`
+    },
+    method: `POST`
+  }).then((response) => response.json()).then((json) => DirectusAuthResponse.parse(json));
+  return await fetch(new URL(`/server/specs/oas`, options.host), {
+    headers: {
+      "Authorization": `Bearer ${access_token}`,
+      "Content-Type": `application/json`
+    }
+  }).then((response) => response.json());
+};
+var validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;
+var generateTypeScript = async (spec, { includeSystemCollections, typeName }) => {
+  if (!validIdentifier.test(typeName)) {
+    throw new Error(`Invalid type name: ${typeName}`);
+  }
+  let source = await openapiTS(spec);
+  source += `
+
+export type ${typeName} = {
+`;
+  const collections = {};
+  if (spec.paths) {
+    for (const [path, pathItem] of Object.entries(spec.paths)) {
+      const collectionPathPattern = /^\/items\/(?<collection>[a-zA-Z0-9_]+)$/;
+      const collection = collectionPathPattern.exec(path)?.groups?.[`collection`];
+      if (typeof collection !== `string` || collection.length === 0) {
+        continue;
+      }
+      if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+        const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+        const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+        const ref = refPattern.exec($ref)?.groups?.[`ref`];
+        if (typeof ref !== `string` || ref.length === 0) {
+          continue;
+        }
+        if (!collections[collection]) {
+          collections[collection] = `components["schemas"]["${ref}"][]`;
+        }
+      }
+    }
+  }
+  const relationshipPathPattern = /^\/relations\/(?<relation>[a-zA-Z0-9_]+)$/;
+  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {
+    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];
+    if (typeof relation !== `string` || relation.length === 0) {
+      continue;
+    }
+    if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+      const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+      const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+      const ref = refPattern.exec($ref)?.groups?.[`ref`];
+      if (typeof ref !== `string` || ref.length === 0) {
+        continue;
+      }
+      if (!collections[relation]) {
+        collections[relation] = `components["schemas"]["${ref}"][]`;
+      }
+    }
+  }
+  if (spec.components && spec.components.schemas && includeSystemCollections) {
+    for (const [schema_key, schema_value] of Object.entries(
+      spec.components.schemas
+    )) {
+      const x_collection = schema_value[`x-collection`];
+      if (typeof x_collection === `string` && x_collection.length > 0) {
+        if (!collections[x_collection]) {
+          collections[x_collection] = `components["schemas"]["${schema_key}"]`;
+        }
+      }
+    }
+  }
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    source += `  ${collectionName}: ${typeDef};
+`;
+  }
+  source += `};
+`;
+  const toPascalCase = (str) => str.replace(/[_\- ]+/g, ` `).split(` `).map((word) => word.charAt(0).toUpperCase() + word.slice(1)).join(``);
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    const pascalCaseName = toPascalCase(collectionName);
+    source += `export type ${pascalCaseName} = ${typeDef};
+`;
+  }
+  return source;
+};
+
+// src/cli.ts
+var main = async () => {
+  const argv = await yargs.options({
+    email: {
+      alias: `e`,
+      description: `Email address`,
+      type: `string`
+    },
+    host: {
+      alias: `h`,
+      description: `Remote host`,
+      type: `string`
+    },
+    includeSystemCollections: {
+      alias: `s`,
+      default: false,
+      description: `Include system collections`,
+      type: `boolean`
+    },
+    outFile: {
+      alias: `o`,
+      description: `Output file`,
+      type: `string`
+    },
+    password: {
+      alias: `p`,
+      description: `Password`,
+      type: `string`
+    },
+    specFile: {
+      alias: `i`,
+      description: `Input spec file`,
+      type: `string`
+    },
+    typeName: {
+      alias: `t`,
+      default: `Schema`,
+      description: `Type name`,
+      type: `string`
+    }
+  }).argv;
+  const spec = await readSpecFile(argv);
+  const ts = await generateTypeScript(spec, {
+    includeSystemCollections: argv.includeSystemCollections,
+    typeName: argv.typeName
+  });
+  if (typeof argv.outFile === `string`) {
+    await writeFile(resolve(process.cwd(), argv.outFile), ts, {
+      encoding: `utf-8`
+    });
+  } else {
+    console.log(ts);
+  }
+};
+main().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
+//# sourceMappingURL=cli.mjs.map
diff --git a/build/cli.mjs.map b/build/cli.mjs.map
new file mode 100644
index 0000000..5e83ee1
--- /dev/null
+++ b/build/cli.mjs.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../src/cli.ts", "../src/index.ts"],
+  "sourcesContent": ["#!/usr/bin/env node\n\nimport { writeFile } from \"fs/promises\";\nimport { resolve } from \"path\";\n\nimport yargs from \"yargs\";\nimport type { OpenAPI3 } from \"openapi-typescript\";\n\nimport { generateTypeScript, readSpecFile } from \".\";\n\nconst main = async (): Promise<void> => {\n  const argv = await yargs.options({\n    email: {\n      alias: `e`,\n      description: `Email address`,\n      type: `string`,\n    },\n    host: {\n      alias: `h`,\n      description: `Remote host`,\n      type: `string`,\n    },\n    includeSystemCollections: {\n      alias: `s`,\n      default: false,\n      description: `Include system collections`,\n      type: `boolean`,\n    },\n    outFile: {\n      alias: `o`,\n      description: `Output file`,\n      type: `string`,\n    },\n    password: {\n      alias: `p`,\n      description: `Password`,\n      type: `string`,\n    },\n    specFile: {\n      alias: `i`,\n      description: `Input spec file`,\n      type: `string`,\n    },\n    typeName: {\n      alias: `t`,\n      default: `Schema`,\n      description: `Type name`,\n      type: `string`,\n    },\n  }).argv;\n\n  const spec = await readSpecFile(argv);\n\n  const ts = await generateTypeScript(spec as OpenAPI3, {\n    includeSystemCollections: argv.includeSystemCollections,\n    typeName: argv.typeName,\n  });\n\n  if (typeof argv.outFile === `string`) {\n    await writeFile(resolve(process.cwd(), argv.outFile), ts, {\n      encoding: `utf-8`,\n    });\n  } else {\n    console.log(ts);\n  }\n};\n\nmain().catch((error) => {\n  console.error(error);\n  process.exit(1);\n});\n", "import { readFile } from \"fs/promises\";\n\nimport type { OpenAPI3 } from \"openapi-typescript\";\nimport openapiTS from \"openapi-typescript\";\nimport { z } from \"zod\";\n\ntype ReadSpecFileOptions = {\n  readonly specFile?: undefined | string;\n  readonly host?: undefined | string;\n  readonly email?: undefined | string;\n  readonly password?: undefined | string;\n};\n\nconst DirectusAuthResponse = z.object({\n  data: z.object({\n    access_token: z.string(),\n    expires: z.number().int(),\n    refresh_token: z.string(),\n  }),\n});\n\nexport const readSpecFile = async (\n  options: ReadSpecFileOptions,\n): Promise<unknown> => {\n  if (typeof options.specFile === `string`) {\n    return JSON.parse(\n      await readFile(options.specFile, { encoding: `utf-8` }),\n    ) as unknown;\n  }\n\n  if (typeof options.host !== `string`) {\n    throw new Error(`Either inputFile or inputUrl must be specified`);\n  }\n  if (typeof options.email !== `string`) {\n    throw new Error(`email must be specified`);\n  }\n  if (typeof options.password !== `string`) {\n    throw new Error(`password must be specified`);\n  }\n\n  const {\n    data: { access_token },\n  } = await fetch(new URL(`/auth/login`, options.host), {\n    body: JSON.stringify({\n      email: options.email,\n      password: options.password,\n    }),\n    headers: {\n      \"Content-Type\": `application/json`,\n    },\n    method: `POST`,\n  })\n    .then((response) => response.json())\n    .then((json) => DirectusAuthResponse.parse(json));\n\n  return (await fetch(new URL(`/server/specs/oas`, options.host), {\n    headers: {\n      \"Authorization\": `Bearer ${access_token}`,\n      \"Content-Type\": `application/json`,\n    },\n  }).then((response) => response.json())) as unknown;\n};\n\ntype GenerateTypeScriptOptions = {\n  readonly includeSystemCollections?: boolean;\n  readonly typeName: string;\n};\n\nconst validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;\n\nexport const generateTypeScript = async (\n  spec: OpenAPI3,\n  { includeSystemCollections, typeName }: GenerateTypeScriptOptions,\n): Promise<string> => {\n  if (!validIdentifier.test(typeName)) {\n    throw new Error(`Invalid type name: ${typeName}`);\n  }\n\n  let source = await openapiTS(spec);\n\n  source += `\\n\\nexport type ${typeName} = {\\n`;\n\n  // Keep a record of discovered collections to avoid duplicates\n  const collections: Record<string, string> = {};\n\n  if (spec.paths) {\n    for (const [path, pathItem] of Object.entries(spec.paths)) {\n      const collectionPathPattern = /^\\/items\\/(?<collection>[a-zA-Z0-9_]+)$/;\n      const collection =\n        collectionPathPattern.exec(path)?.groups?.[`collection`];\n      if (typeof collection !== `string` || collection.length === 0) {\n        continue;\n      }\n      if (\n        `get` in pathItem &&\n        `responses` in pathItem.get &&\n        `200` in pathItem.get.responses &&\n        `content` in pathItem.get.responses[`200`] &&\n        `application/json` in pathItem.get.responses[`200`].content &&\n        `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n        `properties` in\n          pathItem.get.responses[`200`].content[`application/json`].schema &&\n        `data` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties &&\n        `items` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`] &&\n        `$ref` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items\n      ) {\n        const $ref =\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items.$ref;\n        const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n        const ref = refPattern.exec($ref)?.groups?.[`ref`];\n        if (typeof ref !== `string` || ref.length === 0) {\n          continue;\n        }\n        // Instead of adding directly to source, store in collections\n        if (!collections[collection]) {\n          collections[collection] = `components[\"schemas\"][\"${ref}\"][]`;\n        }\n      }\n    }\n  }\n\n  // fixing relationships\n  const relationshipPathPattern = /^\\/relations\\/(?<relation>[a-zA-Z0-9_]+)$/;\n  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {\n    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];\n    if (typeof relation !== `string` || relation.length === 0) {\n      continue;\n    }\n    if (\n      `get` in pathItem &&\n      `responses` in pathItem.get &&\n      `200` in pathItem.get.responses &&\n      `content` in pathItem.get.responses[`200`] &&\n      `application/json` in pathItem.get.responses[`200`].content &&\n      `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n      `properties` in\n        pathItem.get.responses[`200`].content[`application/json`].schema &&\n      `data` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties &&\n      `items` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`] &&\n      `$ref` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items\n    ) {\n      const $ref =\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items.$ref;\n      const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n      const ref = refPattern.exec($ref)?.groups?.[`ref`];\n      if (typeof ref !== `string` || ref.length === 0) {\n        continue;\n      }\n      // Add relationship to collections\n      if (!collections[relation]) {\n        collections[relation] = `components[\"schemas\"][\"${ref}\"][]`;\n      }\n    }\n  }\n\n  // Add directus system collections if requested\n  if (spec.components && spec.components.schemas && includeSystemCollections) {\n    for (const [schema_key, schema_value] of Object.entries(\n      spec.components.schemas,\n    )) {\n      const x_collection = (schema_value as Record<string, unknown>)[\n        `x-collection`\n      ] as string | undefined;\n      if (typeof x_collection === `string` && x_collection.length > 0) {\n        // Only add if not already present\n        if (!collections[x_collection]) {\n          collections[x_collection] = `components[\"schemas\"][\"${schema_key}\"]`;\n        }\n      }\n    }\n  }\n\n  // After gathering all collections, write them out once\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    source += `  ${collectionName}: ${typeDef};\\n`;\n  }\n\n  source += `};\\n`;\n\n  const toPascalCase = (str: string): string =>\n    str\n      .replace(/[_\\- ]+/g, ` `)\n      .split(` `)\n      .map((word) => word.charAt(0).toUpperCase() + word.slice(1))\n      .join(``);\n\n  // Iterate over each collection to create individual export types\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    const pascalCaseName = toPascalCase(collectionName);\n    source += `export type ${pascalCaseName} = ${typeDef};\\n`;\n  }\n\n  return 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+  "names": []
+}
diff --git a/build/index.cjs b/build/index.cjs
new file mode 100644
index 0000000..02d057d
--- /dev/null
+++ b/build/index.cjs
@@ -0,0 +1,156 @@
+"use strict";
+var __create = Object.create;
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
+  // If the importer is in node compatibility mode or this is not an ESM
+  // file that has been converted to a CommonJS file using a Babel-
+  // compatible transform (i.e. "__esModule" has not been set), then set
+  // "default" to the CommonJS "module.exports" for node compatibility.
+  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
+  mod
+));
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+
+// src/index.ts
+var src_exports = {};
+__export(src_exports, {
+  generateTypeScript: () => generateTypeScript,
+  readSpecFile: () => readSpecFile
+});
+module.exports = __toCommonJS(src_exports);
+var import_promises = require("fs/promises");
+var import_openapi_typescript = __toESM(require("openapi-typescript"), 1);
+var import_zod = require("zod");
+var DirectusAuthResponse = import_zod.z.object({
+  data: import_zod.z.object({
+    access_token: import_zod.z.string(),
+    expires: import_zod.z.number().int(),
+    refresh_token: import_zod.z.string()
+  })
+});
+var readSpecFile = async (options) => {
+  if (typeof options.specFile === `string`) {
+    return JSON.parse(
+      await (0, import_promises.readFile)(options.specFile, { encoding: `utf-8` })
+    );
+  }
+  if (typeof options.host !== `string`) {
+    throw new Error(`Either inputFile or inputUrl must be specified`);
+  }
+  if (typeof options.email !== `string`) {
+    throw new Error(`email must be specified`);
+  }
+  if (typeof options.password !== `string`) {
+    throw new Error(`password must be specified`);
+  }
+  const {
+    data: { access_token }
+  } = await fetch(new URL(`/auth/login`, options.host), {
+    body: JSON.stringify({
+      email: options.email,
+      password: options.password
+    }),
+    headers: {
+      "Content-Type": `application/json`
+    },
+    method: `POST`
+  }).then((response) => response.json()).then((json) => DirectusAuthResponse.parse(json));
+  return await fetch(new URL(`/server/specs/oas`, options.host), {
+    headers: {
+      "Authorization": `Bearer ${access_token}`,
+      "Content-Type": `application/json`
+    }
+  }).then((response) => response.json());
+};
+var validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;
+var generateTypeScript = async (spec, { includeSystemCollections, typeName }) => {
+  if (!validIdentifier.test(typeName)) {
+    throw new Error(`Invalid type name: ${typeName}`);
+  }
+  let source = await (0, import_openapi_typescript.default)(spec);
+  source += `
+
+export type ${typeName} = {
+`;
+  const collections = {};
+  if (spec.paths) {
+    for (const [path, pathItem] of Object.entries(spec.paths)) {
+      const collectionPathPattern = /^\/items\/(?<collection>[a-zA-Z0-9_]+)$/;
+      const collection = collectionPathPattern.exec(path)?.groups?.[`collection`];
+      if (typeof collection !== `string` || collection.length === 0) {
+        continue;
+      }
+      if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+        const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+        const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+        const ref = refPattern.exec($ref)?.groups?.[`ref`];
+        if (typeof ref !== `string` || ref.length === 0) {
+          continue;
+        }
+        if (!collections[collection]) {
+          collections[collection] = `components["schemas"]["${ref}"][]`;
+        }
+      }
+    }
+  }
+  const relationshipPathPattern = /^\/relations\/(?<relation>[a-zA-Z0-9_]+)$/;
+  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {
+    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];
+    if (typeof relation !== `string` || relation.length === 0) {
+      continue;
+    }
+    if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+      const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+      const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+      const ref = refPattern.exec($ref)?.groups?.[`ref`];
+      if (typeof ref !== `string` || ref.length === 0) {
+        continue;
+      }
+      if (!collections[relation]) {
+        collections[relation] = `components["schemas"]["${ref}"][]`;
+      }
+    }
+  }
+  if (spec.components && spec.components.schemas && includeSystemCollections) {
+    for (const [schema_key, schema_value] of Object.entries(
+      spec.components.schemas
+    )) {
+      const x_collection = schema_value[`x-collection`];
+      if (typeof x_collection === `string` && x_collection.length > 0) {
+        if (!collections[x_collection]) {
+          collections[x_collection] = `components["schemas"]["${schema_key}"]`;
+        }
+      }
+    }
+  }
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    source += `  ${collectionName}: ${typeDef};
+`;
+  }
+  source += `};
+`;
+  const toPascalCase = (str) => str.replace(/[_\- ]+/g, ` `).split(` `).map((word) => word.charAt(0).toUpperCase() + word.slice(1)).join(``);
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    const pascalCaseName = toPascalCase(collectionName);
+    source += `export type ${pascalCaseName} = ${typeDef};
+`;
+  }
+  return source;
+};
+//# sourceMappingURL=index.cjs.map
diff --git a/build/index.cjs.map b/build/index.cjs.map
new file mode 100644
index 0000000..09fef32
--- /dev/null
+++ b/build/index.cjs.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../src/index.ts"],
+  "sourcesContent": ["import { readFile } from \"fs/promises\";\n\nimport type { OpenAPI3 } from \"openapi-typescript\";\nimport openapiTS from \"openapi-typescript\";\nimport { z } from \"zod\";\n\ntype ReadSpecFileOptions = {\n  readonly specFile?: undefined | string;\n  readonly host?: undefined | string;\n  readonly email?: undefined | string;\n  readonly password?: undefined | string;\n};\n\nconst DirectusAuthResponse = z.object({\n  data: z.object({\n    access_token: z.string(),\n    expires: z.number().int(),\n    refresh_token: z.string(),\n  }),\n});\n\nexport const readSpecFile = async (\n  options: ReadSpecFileOptions,\n): Promise<unknown> => {\n  if (typeof options.specFile === `string`) {\n    return JSON.parse(\n      await readFile(options.specFile, { encoding: `utf-8` }),\n    ) as unknown;\n  }\n\n  if (typeof options.host !== `string`) {\n    throw new Error(`Either inputFile or inputUrl must be specified`);\n  }\n  if (typeof options.email !== `string`) {\n    throw new Error(`email must be specified`);\n  }\n  if (typeof options.password !== `string`) {\n    throw new Error(`password must be specified`);\n  }\n\n  const {\n    data: { access_token },\n  } = await fetch(new URL(`/auth/login`, options.host), {\n    body: JSON.stringify({\n      email: options.email,\n      password: options.password,\n    }),\n    headers: {\n      \"Content-Type\": `application/json`,\n    },\n    method: `POST`,\n  })\n    .then((response) => response.json())\n    .then((json) => DirectusAuthResponse.parse(json));\n\n  return (await fetch(new URL(`/server/specs/oas`, options.host), {\n    headers: {\n      \"Authorization\": `Bearer ${access_token}`,\n      \"Content-Type\": `application/json`,\n    },\n  }).then((response) => response.json())) as unknown;\n};\n\ntype GenerateTypeScriptOptions = {\n  readonly includeSystemCollections?: boolean;\n  readonly typeName: string;\n};\n\nconst validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;\n\nexport const generateTypeScript = async (\n  spec: OpenAPI3,\n  { includeSystemCollections, typeName }: GenerateTypeScriptOptions,\n): Promise<string> => {\n  if (!validIdentifier.test(typeName)) {\n    throw new Error(`Invalid type name: ${typeName}`);\n  }\n\n  let source = await openapiTS(spec);\n\n  source += `\\n\\nexport type ${typeName} = {\\n`;\n\n  // Keep a record of discovered collections to avoid duplicates\n  const collections: Record<string, string> = {};\n\n  if (spec.paths) {\n    for (const [path, pathItem] of Object.entries(spec.paths)) {\n      const collectionPathPattern = /^\\/items\\/(?<collection>[a-zA-Z0-9_]+)$/;\n      const collection =\n        collectionPathPattern.exec(path)?.groups?.[`collection`];\n      if (typeof collection !== `string` || collection.length === 0) {\n        continue;\n      }\n      if (\n        `get` in pathItem &&\n        `responses` in pathItem.get &&\n        `200` in pathItem.get.responses &&\n        `content` in pathItem.get.responses[`200`] &&\n        `application/json` in pathItem.get.responses[`200`].content &&\n        `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n        `properties` in\n          pathItem.get.responses[`200`].content[`application/json`].schema &&\n        `data` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties &&\n        `items` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`] &&\n        `$ref` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items\n      ) {\n        const $ref =\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items.$ref;\n        const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n        const ref = refPattern.exec($ref)?.groups?.[`ref`];\n        if (typeof ref !== `string` || ref.length === 0) {\n          continue;\n        }\n        // Instead of adding directly to source, store in collections\n        if (!collections[collection]) {\n          collections[collection] = `components[\"schemas\"][\"${ref}\"][]`;\n        }\n      }\n    }\n  }\n\n  // fixing relationships\n  const relationshipPathPattern = /^\\/relations\\/(?<relation>[a-zA-Z0-9_]+)$/;\n  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {\n    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];\n    if (typeof relation !== `string` || relation.length === 0) {\n      continue;\n    }\n    if (\n      `get` in pathItem &&\n      `responses` in pathItem.get &&\n      `200` in pathItem.get.responses &&\n      `content` in pathItem.get.responses[`200`] &&\n      `application/json` in pathItem.get.responses[`200`].content &&\n      `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n      `properties` in\n        pathItem.get.responses[`200`].content[`application/json`].schema &&\n      `data` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties &&\n      `items` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`] &&\n      `$ref` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items\n    ) {\n      const $ref =\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items.$ref;\n      const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n      const ref = refPattern.exec($ref)?.groups?.[`ref`];\n      if (typeof ref !== `string` || ref.length === 0) {\n        continue;\n      }\n      // Add relationship to collections\n      if (!collections[relation]) {\n        collections[relation] = `components[\"schemas\"][\"${ref}\"][]`;\n      }\n    }\n  }\n\n  // Add directus system collections if requested\n  if (spec.components && spec.components.schemas && includeSystemCollections) {\n    for (const [schema_key, schema_value] of Object.entries(\n      spec.components.schemas,\n    )) {\n      const x_collection = (schema_value as Record<string, unknown>)[\n        `x-collection`\n      ] as string | undefined;\n      if (typeof x_collection === `string` && x_collection.length > 0) {\n        // Only add if not already present\n        if (!collections[x_collection]) {\n          collections[x_collection] = `components[\"schemas\"][\"${schema_key}\"]`;\n        }\n      }\n    }\n  }\n\n  // After gathering all collections, write them out once\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    source += `  ${collectionName}: ${typeDef};\\n`;\n  }\n\n  source += `};\\n`;\n\n  const toPascalCase = (str: string): string =>\n    str\n      .replace(/[_\\- ]+/g, ` `)\n      .split(` `)\n      .map((word) => word.charAt(0).toUpperCase() + word.slice(1))\n      .join(``);\n\n  // Iterate over each collection to create individual export types\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    const pascalCaseName = toPascalCase(collectionName);\n    source += `export type ${pascalCaseName} = ${typeDef};\\n`;\n  }\n\n  return source;\n};\n"],
+  "mappings": ";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,sBAAyB;AAGzB,gCAAsB;AACtB,iBAAkB;AASlB,IAAM,uBAAuB,aAAE,OAAO;AAAA,EACpC,MAAM,aAAE,OAAO;AAAA,IACb,cAAc,aAAE,OAAO;AAAA,IACvB,SAAS,aAAE,OAAO,EAAE,IAAI;AAAA,IACxB,eAAe,aAAE,OAAO;AAAA,EAC1B,CAAC;AACH,CAAC;AAEM,IAAM,eAAe,OAC1B,YACqB;AACrB,MAAI,OAAO,QAAQ,aAAa,UAAU;AACxC,WAAO,KAAK;AAAA,MACV,UAAM,0BAAS,QAAQ,UAAU,EAAE,UAAU,QAAQ,CAAC;AAAA,IACxD;AAAA,EACF;AAEA,MAAI,OAAO,QAAQ,SAAS,UAAU;AACpC,UAAM,IAAI,MAAM,gDAAgD;AAAA,EAClE;AACA,MAAI,OAAO,QAAQ,UAAU,UAAU;AACrC,UAAM,IAAI,MAAM,yBAAyB;AAAA,EAC3C;AACA,MAAI,OAAO,QAAQ,aAAa,UAAU;AACxC,UAAM,IAAI,MAAM,4BAA4B;AAAA,EAC9C;AAEA,QAAM;AAAA,IACJ,MAAM,EAAE,aAAa;AAAA,EACvB,IAAI,MAAM,MAAM,IAAI,IAAI,eAAe,QAAQ,IAAI,GAAG;AAAA,IACpD,MAAM,KAAK,UAAU;AAAA,MACnB,OAAO,QAAQ;AAAA,MACf,UAAU,QAAQ;AAAA,IACpB,CAAC;AAAA,IACD,SAAS;AAAA,MACP,gBAAgB;AAAA,IAClB;AAAA,IACA,QAAQ;AAAA,EACV,CAAC,EACE,KAAK,CAAC,aAAa,SAAS,KAAK,CAAC,EAClC,KAAK,CAAC,SAAS,qBAAqB,MAAM,IAAI,CAAC;AAElD,SAAQ,MAAM,MAAM,IAAI,IAAI,qBAAqB,QAAQ,IAAI,GAAG;AAAA,IAC9D,SAAS;AAAA,MACP,iBAAiB,UAAU,YAAY;AAAA,MACvC,gBAAgB;AAAA,IAClB;AAAA,EACF,CAAC,EAAE,KAAK,CAAC,aAAa,SAAS,KAAK,CAAC;AACvC;AAOA,IAAM,kBAAkB;AAEjB,IAAM,qBAAqB,OAChC,MACA,EAAE,0BAA0B,SAAS,MACjB;AACpB,MAAI,CAAC,gBAAgB,KAAK,QAAQ,GAAG;AACnC,UAAM,IAAI,MAAM,sBAAsB,QAAQ,EAAE;AAAA,EAClD;AAEA,MAAI,SAAS,UAAM,0BAAAA,SAAU,IAAI;AAEjC,YAAU;AAAA;AAAA,cAAmB,QAAQ;AAAA;AAGrC,QAAM,cAAsC,CAAC;AAE7C,MAAI,KAAK,OAAO;AACd,eAAW,CAAC,MAAM,QAAQ,KAAK,OAAO,QAAQ,KAAK,KAAK,GAAG;AACzD,YAAM,wBAAwB;AAC9B,YAAM,aACJ,sBAAsB,KAAK,IAAI,GAAG,SAAS,YAAY;AACzD,UAAI,OAAO,eAAe,YAAY,WAAW,WAAW,GAAG;AAC7D;AAAA,MACF;AACA,UACE,SAAS,YACT,eAAe,SAAS,OACxB,SAAS,SAAS,IAAI,aACtB,aAAa,SAAS,IAAI,UAAU,KAAK,KACzC,sBAAsB,SAAS,IAAI,UAAU,KAAK,EAAE,WACpD,YAAY,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,KACpE,gBACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,UAC5D,UACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,cACL,WACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,KACtB,UACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,EAAE,OACxB;AACA,cAAM,OACJ,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,EAAE,MAAM;AAC9B,cAAM,aAAa;AACnB,cAAM,MAAM,WAAW,KAAK,IAAI,GAAG,SAAS,KAAK;AACjD,YAAI,OAAO,QAAQ,YAAY,IAAI,WAAW,GAAG;AAC/C;AAAA,QACF;AAEA,YAAI,CAAC,YAAY,UAAU,GAAG;AAC5B,sBAAY,UAAU,IAAI,0BAA0B,GAAG;AAAA,QACzD;AAAA,MACF;AAAA,IACF;AAAA,EACF;AAGA,QAAM,0BAA0B;AAChC,aAAW,CAAC,MAAM,QAAQ,KAAK,OAAO,QAAQ,KAAK,SAAS,CAAC,CAAC,GAAG;AAC/D,UAAM,WAAW,wBAAwB,KAAK,IAAI,GAAG,SAAS,UAAU;AACxE,QAAI,OAAO,aAAa,YAAY,SAAS,WAAW,GAAG;AACzD;AAAA,IACF;AACA,QACE,SAAS,YACT,eAAe,SAAS,OACxB,SAAS,SAAS,IAAI,aACtB,aAAa,SAAS,IAAI,UAAU,KAAK,KACzC,sBAAsB,SAAS,IAAI,UAAU,KAAK,EAAE,WACpD,YAAY,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,KACpE,gBACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,UAC5D,UACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,cACL,WACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,KACtB,UACE,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,EAAE,OACxB;AACA,YAAM,OACJ,SAAS,IAAI,UAAU,KAAK,EAAE,QAAQ,kBAAkB,EAAE,OACvD,WAAW,MAAM,EAAE,MAAM;AAC9B,YAAM,aAAa;AACnB,YAAM,MAAM,WAAW,KAAK,IAAI,GAAG,SAAS,KAAK;AACjD,UAAI,OAAO,QAAQ,YAAY,IAAI,WAAW,GAAG;AAC/C;AAAA,MACF;AAEA,UAAI,CAAC,YAAY,QAAQ,GAAG;AAC1B,oBAAY,QAAQ,IAAI,0BAA0B,GAAG;AAAA,MACvD;AAAA,IACF;AAAA,EACF;AAGA,MAAI,KAAK,cAAc,KAAK,WAAW,WAAW,0BAA0B;AAC1E,eAAW,CAAC,YAAY,YAAY,KAAK,OAAO;AAAA,MAC9C,KAAK,WAAW;AAAA,IAClB,GAAG;AACD,YAAM,eAAgB,aACpB,cACF;AACA,UAAI,OAAO,iBAAiB,YAAY,aAAa,SAAS,GAAG;AAE/D,YAAI,CAAC,YAAY,YAAY,GAAG;AAC9B,sBAAY,YAAY,IAAI,0BAA0B,UAAU;AAAA,QAClE;AAAA,MACF;AAAA,IACF;AAAA,EACF;AAGA,aAAW,CAAC,gBAAgB,OAAO,KAAK,OAAO,QAAQ,WAAW,GAAG;AACnE,cAAU,KAAK,cAAc,KAAK,OAAO;AAAA;AAAA,EAC3C;AAEA,YAAU;AAAA;AAEV,QAAM,eAAe,CAAC,QACpB,IACG,QAAQ,YAAY,GAAG,EACvB,MAAM,GAAG,EACT,IAAI,CAAC,SAAS,KAAK,OAAO,CAAC,EAAE,YAAY,IAAI,KAAK,MAAM,CAAC,CAAC,EAC1D,KAAK,EAAE;AAGZ,aAAW,CAAC,gBAAgB,OAAO,KAAK,OAAO,QAAQ,WAAW,GAAG;AACnE,UAAM,iBAAiB,aAAa,cAAc;AAClD,cAAU,eAAe,cAAc,MAAM,OAAO;AAAA;AAAA,EACtD;AAEA,SAAO;AACT;",
+  "names": ["openapiTS"]
+}
diff --git a/build/index.d.ts b/build/index.d.ts
new file mode 100644
index 0000000..9f9541f
--- /dev/null
+++ b/build/index.d.ts
@@ -0,0 +1,14 @@
+import type { OpenAPI3 } from "openapi-typescript";
+type ReadSpecFileOptions = {
+    readonly specFile?: undefined | string;
+    readonly host?: undefined | string;
+    readonly email?: undefined | string;
+    readonly password?: undefined | string;
+};
+export declare const readSpecFile: (options: ReadSpecFileOptions) => Promise<unknown>;
+type GenerateTypeScriptOptions = {
+    readonly includeSystemCollections?: boolean;
+    readonly typeName: string;
+};
+export declare const generateTypeScript: (spec: OpenAPI3, { includeSystemCollections, typeName }: GenerateTypeScriptOptions) => Promise<string>;
+export {};
diff --git a/build/index.mjs b/build/index.mjs
new file mode 100644
index 0000000..fbedcd3
--- /dev/null
+++ b/build/index.mjs
@@ -0,0 +1,125 @@
+// src/index.ts
+import { readFile } from "fs/promises";
+import openapiTS from "openapi-typescript";
+import { z } from "zod";
+var DirectusAuthResponse = z.object({
+  data: z.object({
+    access_token: z.string(),
+    expires: z.number().int(),
+    refresh_token: z.string()
+  })
+});
+var readSpecFile = async (options) => {
+  if (typeof options.specFile === `string`) {
+    return JSON.parse(
+      await readFile(options.specFile, { encoding: `utf-8` })
+    );
+  }
+  if (typeof options.host !== `string`) {
+    throw new Error(`Either inputFile or inputUrl must be specified`);
+  }
+  if (typeof options.email !== `string`) {
+    throw new Error(`email must be specified`);
+  }
+  if (typeof options.password !== `string`) {
+    throw new Error(`password must be specified`);
+  }
+  const {
+    data: { access_token }
+  } = await fetch(new URL(`/auth/login`, options.host), {
+    body: JSON.stringify({
+      email: options.email,
+      password: options.password
+    }),
+    headers: {
+      "Content-Type": `application/json`
+    },
+    method: `POST`
+  }).then((response) => response.json()).then((json) => DirectusAuthResponse.parse(json));
+  return await fetch(new URL(`/server/specs/oas`, options.host), {
+    headers: {
+      "Authorization": `Bearer ${access_token}`,
+      "Content-Type": `application/json`
+    }
+  }).then((response) => response.json());
+};
+var validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;
+var generateTypeScript = async (spec, { includeSystemCollections, typeName }) => {
+  if (!validIdentifier.test(typeName)) {
+    throw new Error(`Invalid type name: ${typeName}`);
+  }
+  let source = await openapiTS(spec);
+  source += `
+
+export type ${typeName} = {
+`;
+  const collections = {};
+  if (spec.paths) {
+    for (const [path, pathItem] of Object.entries(spec.paths)) {
+      const collectionPathPattern = /^\/items\/(?<collection>[a-zA-Z0-9_]+)$/;
+      const collection = collectionPathPattern.exec(path)?.groups?.[`collection`];
+      if (typeof collection !== `string` || collection.length === 0) {
+        continue;
+      }
+      if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+        const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+        const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+        const ref = refPattern.exec($ref)?.groups?.[`ref`];
+        if (typeof ref !== `string` || ref.length === 0) {
+          continue;
+        }
+        if (!collections[collection]) {
+          collections[collection] = `components["schemas"]["${ref}"][]`;
+        }
+      }
+    }
+  }
+  const relationshipPathPattern = /^\/relations\/(?<relation>[a-zA-Z0-9_]+)$/;
+  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {
+    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];
+    if (typeof relation !== `string` || relation.length === 0) {
+      continue;
+    }
+    if (`get` in pathItem && `responses` in pathItem.get && `200` in pathItem.get.responses && `content` in pathItem.get.responses[`200`] && `application/json` in pathItem.get.responses[`200`].content && `schema` in pathItem.get.responses[`200`].content[`application/json`] && `properties` in pathItem.get.responses[`200`].content[`application/json`].schema && `data` in pathItem.get.responses[`200`].content[`application/json`].schema.properties && `items` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`] && `$ref` in pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items) {
+      const $ref = pathItem.get.responses[`200`].content[`application/json`].schema.properties[`data`].items.$ref;
+      const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+      const ref = refPattern.exec($ref)?.groups?.[`ref`];
+      if (typeof ref !== `string` || ref.length === 0) {
+        continue;
+      }
+      if (!collections[relation]) {
+        collections[relation] = `components["schemas"]["${ref}"][]`;
+      }
+    }
+  }
+  if (spec.components && spec.components.schemas && includeSystemCollections) {
+    for (const [schema_key, schema_value] of Object.entries(
+      spec.components.schemas
+    )) {
+      const x_collection = schema_value[`x-collection`];
+      if (typeof x_collection === `string` && x_collection.length > 0) {
+        if (!collections[x_collection]) {
+          collections[x_collection] = `components["schemas"]["${schema_key}"]`;
+        }
+      }
+    }
+  }
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    source += `  ${collectionName}: ${typeDef};
+`;
+  }
+  source += `};
+`;
+  const toPascalCase = (str) => str.replace(/[_\- ]+/g, ` `).split(` `).map((word) => word.charAt(0).toUpperCase() + word.slice(1)).join(``);
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    const pascalCaseName = toPascalCase(collectionName);
+    source += `export type ${pascalCaseName} = ${typeDef};
+`;
+  }
+  return source;
+};
+export {
+  generateTypeScript,
+  readSpecFile
+};
+//# sourceMappingURL=index.mjs.map
diff --git a/build/index.mjs.map b/build/index.mjs.map
new file mode 100644
index 0000000..aa92806
--- /dev/null
+++ b/build/index.mjs.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../src/index.ts"],
+  "sourcesContent": ["import { readFile } from \"fs/promises\";\n\nimport type { OpenAPI3 } from \"openapi-typescript\";\nimport openapiTS from \"openapi-typescript\";\nimport { z } from \"zod\";\n\ntype ReadSpecFileOptions = {\n  readonly specFile?: undefined | string;\n  readonly host?: undefined | string;\n  readonly email?: undefined | string;\n  readonly password?: undefined | string;\n};\n\nconst DirectusAuthResponse = z.object({\n  data: z.object({\n    access_token: z.string(),\n    expires: z.number().int(),\n    refresh_token: z.string(),\n  }),\n});\n\nexport const readSpecFile = async (\n  options: ReadSpecFileOptions,\n): Promise<unknown> => {\n  if (typeof options.specFile === `string`) {\n    return JSON.parse(\n      await readFile(options.specFile, { encoding: `utf-8` }),\n    ) as unknown;\n  }\n\n  if (typeof options.host !== `string`) {\n    throw new Error(`Either inputFile or inputUrl must be specified`);\n  }\n  if (typeof options.email !== `string`) {\n    throw new Error(`email must be specified`);\n  }\n  if (typeof options.password !== `string`) {\n    throw new Error(`password must be specified`);\n  }\n\n  const {\n    data: { access_token },\n  } = await fetch(new URL(`/auth/login`, options.host), {\n    body: JSON.stringify({\n      email: options.email,\n      password: options.password,\n    }),\n    headers: {\n      \"Content-Type\": `application/json`,\n    },\n    method: `POST`,\n  })\n    .then((response) => response.json())\n    .then((json) => DirectusAuthResponse.parse(json));\n\n  return (await fetch(new URL(`/server/specs/oas`, options.host), {\n    headers: {\n      \"Authorization\": `Bearer ${access_token}`,\n      \"Content-Type\": `application/json`,\n    },\n  }).then((response) => response.json())) as unknown;\n};\n\ntype GenerateTypeScriptOptions = {\n  readonly includeSystemCollections?: boolean;\n  readonly typeName: string;\n};\n\nconst validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;\n\nexport const generateTypeScript = async (\n  spec: OpenAPI3,\n  { includeSystemCollections, typeName }: GenerateTypeScriptOptions,\n): Promise<string> => {\n  if (!validIdentifier.test(typeName)) {\n    throw new Error(`Invalid type name: ${typeName}`);\n  }\n\n  let source = await openapiTS(spec);\n\n  source += `\\n\\nexport type ${typeName} = {\\n`;\n\n  // Keep a record of discovered collections to avoid duplicates\n  const collections: Record<string, string> = {};\n\n  if (spec.paths) {\n    for (const [path, pathItem] of Object.entries(spec.paths)) {\n      const collectionPathPattern = /^\\/items\\/(?<collection>[a-zA-Z0-9_]+)$/;\n      const collection =\n        collectionPathPattern.exec(path)?.groups?.[`collection`];\n      if (typeof collection !== `string` || collection.length === 0) {\n        continue;\n      }\n      if (\n        `get` in pathItem &&\n        `responses` in pathItem.get &&\n        `200` in pathItem.get.responses &&\n        `content` in pathItem.get.responses[`200`] &&\n        `application/json` in pathItem.get.responses[`200`].content &&\n        `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n        `properties` in\n          pathItem.get.responses[`200`].content[`application/json`].schema &&\n        `data` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties &&\n        `items` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`] &&\n        `$ref` in\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items\n      ) {\n        const $ref =\n          pathItem.get.responses[`200`].content[`application/json`].schema\n            .properties[`data`].items.$ref;\n        const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n        const ref = refPattern.exec($ref)?.groups?.[`ref`];\n        if (typeof ref !== `string` || ref.length === 0) {\n          continue;\n        }\n        // Instead of adding directly to source, store in collections\n        if (!collections[collection]) {\n          collections[collection] = `components[\"schemas\"][\"${ref}\"][]`;\n        }\n      }\n    }\n  }\n\n  // fixing relationships\n  const relationshipPathPattern = /^\\/relations\\/(?<relation>[a-zA-Z0-9_]+)$/;\n  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {\n    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];\n    if (typeof relation !== `string` || relation.length === 0) {\n      continue;\n    }\n    if (\n      `get` in pathItem &&\n      `responses` in pathItem.get &&\n      `200` in pathItem.get.responses &&\n      `content` in pathItem.get.responses[`200`] &&\n      `application/json` in pathItem.get.responses[`200`].content &&\n      `schema` in pathItem.get.responses[`200`].content[`application/json`] &&\n      `properties` in\n        pathItem.get.responses[`200`].content[`application/json`].schema &&\n      `data` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties &&\n      `items` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`] &&\n      `$ref` in\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items\n    ) {\n      const $ref =\n        pathItem.get.responses[`200`].content[`application/json`].schema\n          .properties[`data`].items.$ref;\n      const refPattern = /^#\\/components\\/schemas\\/(?<ref>[a-zA-Z0-9_]+)$/;\n      const ref = refPattern.exec($ref)?.groups?.[`ref`];\n      if (typeof ref !== `string` || ref.length === 0) {\n        continue;\n      }\n      // Add relationship to collections\n      if (!collections[relation]) {\n        collections[relation] = `components[\"schemas\"][\"${ref}\"][]`;\n      }\n    }\n  }\n\n  // Add directus system collections if requested\n  if (spec.components && spec.components.schemas && includeSystemCollections) {\n    for (const [schema_key, schema_value] of Object.entries(\n      spec.components.schemas,\n    )) {\n      const x_collection = (schema_value as Record<string, unknown>)[\n        `x-collection`\n      ] as string | undefined;\n      if (typeof x_collection === `string` && x_collection.length > 0) {\n        // Only add if not already present\n        if (!collections[x_collection]) {\n          collections[x_collection] = `components[\"schemas\"][\"${schema_key}\"]`;\n        }\n      }\n    }\n  }\n\n  // After gathering all collections, write them out once\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    source += `  ${collectionName}: ${typeDef};\\n`;\n  }\n\n  source += `};\\n`;\n\n  const toPascalCase = (str: string): string =>\n    str\n      .replace(/[_\\- ]+/g, ` `)\n      .split(` `)\n      .map((word) => word.charAt(0).toUpperCase() + word.slice(1))\n      .join(``);\n\n  // Iterate over each collection to create individual export types\n  for (const [collectionName, typeDef] of Object.entries(collections)) {\n    const pascalCaseName = toPascalCase(collectionName);\n    source += `export type ${pascalCaseName} = ${typeDef};\\n`;\n  }\n\n  return source;\n};\n"],
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+  "names": []
+}
diff --git a/package-lock.json b/package-lock.json
index 4a0b913..f33a42e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "directus-typescript-gen",
-  "version": "1.0.0-dev",
+  "version": "1.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "directus-typescript-gen",
-      "version": "1.0.0-dev",
+      "version": "1.1.0",
       "dependencies": {
         "openapi-typescript": "^6.7.0",
         "yargs": "^17.7.2",
diff --git a/package.json b/package.json
index 25d6215..f2cef2e 100644
--- a/package.json
+++ b/package.json
@@ -47,5 +47,5 @@
   },
   "type": "module",
   "types": "./build/index.d.ts",
-  "version": "1.0.0"
-}
\ No newline at end of file
+  "version": "1.3.1"
+}
diff --git a/src/cli.ts b/src/cli.ts
index 63d6998..d433596 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -20,6 +20,12 @@ const main = async (): Promise<void> => {
       description: `Remote host`,
       type: `string`,
     },
+    includeSystemCollections: {
+      alias: `s`,
+      default: false,
+      description: `Include system collections`,
+      type: `boolean`,
+    },
     outFile: {
       alias: `o`,
       description: `Output file`,
@@ -45,7 +51,10 @@ const main = async (): Promise<void> => {
 
   const spec = await readSpecFile(argv);
 
+  console.log(JSON.stringify(spec, null, 2)); // Add this for debugging
+
   const ts = await generateTypeScript(spec as OpenAPI3, {
+    includeSystemCollections: argv.includeSystemCollections,
     typeName: argv.typeName,
   });
 
diff --git a/src/index.ts b/src/index.ts
index 4b1e423..e61c212 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -61,7 +61,9 @@ export const readSpecFile = async (
   }).then((response) => response.json())) as unknown;
 };
 
+
 type GenerateTypeScriptOptions = {
+  readonly includeSystemCollections?: boolean;
   readonly typeName: string;
 };
 
@@ -69,7 +71,7 @@ const validIdentifier = /^[a-zA-Z_$][a-zA-Z_$0-9]*$/;
 
 export const generateTypeScript = async (
   spec: OpenAPI3,
-  { typeName }: GenerateTypeScriptOptions,
+  { includeSystemCollections, typeName }: GenerateTypeScriptOptions,
 ): Promise<string> => {
   if (!validIdentifier.test(typeName)) {
     throw new Error(`Invalid type name: ${typeName}`);
@@ -79,6 +81,9 @@ export const generateTypeScript = async (
 
   source += `\n\nexport type ${typeName} = {\n`;
 
+  // Keep a record of discovered collections to avoid duplicates
+  const collections: Record<string, string> = {};
+
   if (spec.paths) {
     for (const [path, pathItem] of Object.entries(spec.paths)) {
       const collectionPathPattern = /^\/items\/(?<collection>[a-zA-Z0-9_]+)$/;
@@ -95,16 +100,16 @@ export const generateTypeScript = async (
         `application/json` in pathItem.get.responses[`200`].content &&
         `schema` in pathItem.get.responses[`200`].content[`application/json`] &&
         `properties` in
-          pathItem.get.responses[`200`].content[`application/json`].schema &&
+        Item.get.responses[`200`].content[`application/json`].schema &&
         `data` in
-          pathItem.get.responses[`200`].content[`application/json`].schema
-            .properties &&
+        Item.get.responses[`200`].content[`application/json`].schema
+          perties &&
         `items` in
-          pathItem.get.responses[`200`].content[`application/json`].schema
-            .properties[`data`] &&
+        Item.get.responses[`200`].content[`application/json`].schema
+          perties[`data`] &&
         `$ref` in
-          pathItem.get.responses[`200`].content[`application/json`].schema
-            .properties[`data`].items
+        Item.get.responses[`200`].content[`application/json`].schema
+          perties[`data`].items
       ) {
         const $ref =
           pathItem.get.responses[`200`].content[`application/json`].schema
@@ -114,12 +119,91 @@ export const generateTypeScript = async (
         if (typeof ref !== `string` || ref.length === 0) {
           continue;
         }
-        source += `  ${collection}: components["schemas"]["${ref}"][];\n`;
+        // Instead of adding directly to source, store in collections
+        if (!collections[collection]) {
+          collections[collection] = `components["schemas"]["${ref}"][]`;
+        }
       }
     }
   }
 
+  // fixing relationships
+  const relationshipPathPattern = /^\/relations\/(?<relation>[a-zA-Z0-9_]+)$/;
+  for (const [path, pathItem] of Object.entries(spec.paths ?? {})) {
+    const relation = relationshipPathPattern.exec(path)?.groups?.[`relation`];
+    if (typeof relation !== `string` || relation.length === 0) {
+      continue;
+    }
+    if (
+      `get` in pathItem &&
+      `responses` in pathItem.get &&
+      `200` in pathItem.get.responses &&
+      `content` in pathItem.get.responses[`200`] &&
+      `application/json` in pathItem.get.responses[`200`].content &&
+      `schema` in pathItem.get.responses[`200`].content[`application/json`] &&
+      `properties` in
+      Item.get.responses[`200`].content[`application/json`].schema &&
+      `data` in
+      Item.get.responses[`200`].content[`application/json`].schema
+        perties &&
+      `items` in
+      Item.get.responses[`200`].content[`application/json`].schema
+        perties[`data`] &&
+      `$ref` in
+      Item.get.responses[`200`].content[`application/json`].schema
+        perties[`data`].items
+    ) {
+      const $ref =
+        pathItem.get.responses[`200`].content[`application/json`].schema
+          .properties[`data`].items.$ref;
+      const refPattern = /^#\/components\/schemas\/(?<ref>[a-zA-Z0-9_]+)$/;
+      const ref = refPattern.exec($ref)?.groups?.[`ref`];
+      if (typeof ref !== `string` || ref.length === 0) {
+        continue;
+      }
+      // Add relationship to collections
+      if (!collections[relation]) {
+        collections[relation] = `components["schemas"]["${ref}"][]`;
+      }
+    }
+  }
+
+  // Add directus system collections if requested
+  if (spec.components && spec.components.schemas && includeSystemCollections) {
+    for (const [schema_key, schema_value] of Object.entries(
+      spec.components.schemas,
+    )) {
+      const x_collection = (schema_value as Record<string, unknown>)[
+        `x-collection`
+      ] as string | undefined;
+      if (typeof x_collection === `string` && x_collection.length > 0) {
+        // Only add if not already present
+        if (!collections[x_collection]) {
+          collections[x_collection] = `components["schemas"]["${schema_key}"]`;
+        }
+      }
+    }
+  }
+
+  // After gathering all collections, write them out once
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    source += `  ${collectionName}: ${typeDef};\n`;
+  }
+
   source += `};\n`;
 
+  const toPascalCase = (str: string): string =>
+    str
+      .replace(/[_\- ]+/g, ` `)
+      .split(` `)
+      .map((word) => word.charAt(0).toUpperCase() + word.slice(1))
+      .join(``);
+
+  // Iterate over each collection to create individual export types
+  for (const [collectionName, typeDef] of Object.entries(collections)) {
+    const pascalCaseName = toPascalCase(collectionName);
+    source += `export type ${pascalCaseName} = ${typeDef};\n`;
+  }
+
   return source;
 };