chatgpt-api/packages/openapi-to-ts

Generate an Agentic TypeScript client from an OpenAPI spec.

Agentic

See the github repo or docs for more info.

Intro

@agentic/openapi-to-ts is a tool for converting OpenAPI specs into minimal, self-contained Agentic TypeScript clients. API operations are converted to AIFunction-compatible methods and all types are converted to Zod schemas.

The resulting tools are compatible with all leading TS AI SDKs.

Example Usage

# local development
tsx bin/openapi-to-ts.ts fixtures/openapi/3.0/notion.json -o fixtures/generated

# published version
npx @agentic/openapi-to-ts fixtures/openapi/3.0/notion.json -o fixtures/generated

# npm install -g version
npm install -g @agentic/openapi-to-ts
openapi-to-ts fixtures/openapi/3.0/notion.json -o fixtures/generated

Most OpenAPI specs should be supported, but I've made no attempt to maximize robustness. This tool is meant to generate Agentic TS clients which are 99% of the way there, but some tweaking may be necessary post-generation.

Some things you may want to tweak:

• simplifying the zod parameters accepted by @aiFunction input schemas since LLMs tend to do better with a few, key parameters
• removing unused API endpoints & associated types that you don't want to expose to LLMs

TODO

• convert openapi parsing & utils to https://github.com/readmeio/oas
• support filters
  • optional array of path globs
  • optional array of tag globs
  • consider using https://github.com/micromatch/micromatch
• Convert HTML in descriptions to markdown
• Properly format multiline function comments
• Debug stripe schema issue
• Fix json-schema-to-zod withJsdocs issue (github example) where jsdocs aren't escaped for JS block comments
• Fix github example issue with nullable() zod schema parameter
• Fix github json-schema-to-zod example issue with string enum given default value true as a non-string boolean
• Fix github gists/get-revision missing path parameter because of ref
• Fix github activity_star_repo_for_authenticated_user path seems incorrect

License

MIT © Travis Fischer