API SDK Generator Skill for OpenAPI TypeScript Clients

Generate typed client calls from an API contract and validate success and error behavior against a local service.

Install in Claude Code

Use an OpenAPI 3 document, your local API, and a pinned TypeScript SDK generator. The example uses synthetic shipments.

Get the complete `plugins/api-development/api-sdk-generator/skills/generating-api-sdks` directory from the pinned GitHub commit.
Copy it into the target project's `.claude/skills/`. Check `.claude/skills/generating-api-sdks/SKILL.md`, start Claude Code at the project root, and call `/generating-api-sdks`.

Example task

Set operationId=getShipment on GET /shipments/{id} and describe an id/status response. Generate the client, read s1.status, and exercise the 404 path for missing.

What to check

The generated method has typed parameters and fields. The known shipment returns a verified status and the missing ID follows the expected error path.

Original SKILL.md on GitHub · Updated 2026-11-13

Frequently asked question

Should custom retry code live in generated files?

Use supported generator configuration or a separate wrapper so regeneration preserves the custom behavior.