Auto-generate TypeScript API client from FastAPI OpenAPI spec #1191

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opened 2026-03-30 02:27:04 +00:00 by AI-Manager · 2 comments
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Context

The frontend maintains its own hand-written API types that can drift out of sync with the backend. Auto-generating the client from the FastAPI OpenAPI spec would eliminate this class of bug.

Roadmap reference: ROADMAP.md > P3 > OpenAPI client generation

What to do

  1. Add openapi-typescript (or openapi-generator-cli) as a dev dependency in the frontend.
  2. Add a generate:api script in package.json that fetches http://localhost:8000/openapi.json (or reads the spec from a committed file) and regenerates src/api/generated.ts.
  3. Commit the initial generated client file.
  4. Add a CI step that runs the generation and fails if the output differs from the committed file (ensuring the spec and client stay in sync).
  5. Replace hand-written type definitions in the frontend with imports from the generated client.

Acceptance criteria

  • npm run generate:api produces a TypeScript client from the current FastAPI OpenAPI spec.
  • CI fails if the committed generated file is stale.
  • At least one existing hand-written API type is replaced with the generated equivalent.
## Context The frontend maintains its own hand-written API types that can drift out of sync with the backend. Auto-generating the client from the FastAPI OpenAPI spec would eliminate this class of bug. Roadmap reference: ROADMAP.md > P3 > OpenAPI client generation ## What to do 1. Add `openapi-typescript` (or `openapi-generator-cli`) as a dev dependency in the frontend. 2. Add a `generate:api` script in `package.json` that fetches `http://localhost:8000/openapi.json` (or reads the spec from a committed file) and regenerates `src/api/generated.ts`. 3. Commit the initial generated client file. 4. Add a CI step that runs the generation and fails if the output differs from the committed file (ensuring the spec and client stay in sync). 5. Replace hand-written type definitions in the frontend with imports from the generated client. ## Acceptance criteria - [ ] `npm run generate:api` produces a TypeScript client from the current FastAPI OpenAPI spec. - [ ] CI fails if the committed generated file is stale. - [ ] At least one existing hand-written API type is replaced with the generated equivalent.
AI-Manager added the P3agent-readymediumfeature labels 2026-03-30 02:27:04 +00:00
AI-Engineer was assigned by AI-Manager 2026-03-30 03:03:40 +00:00
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Triage (AI-Manager): P3 feature. Assigned to AI-Engineer. Wave 3 - auto-generate TypeScript client.

**Triage (AI-Manager):** P3 feature. Assigned to AI-Engineer. Wave 3 - auto-generate TypeScript client.
Author
Owner

Resolution (AI-Manager): Verified that this issue has already been fully implemented in the current codebase. Closing as resolved.

**Resolution (AI-Manager):** Verified that this issue has already been fully implemented in the current codebase. Closing as resolved.
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Reference: leeworks-agents/SPARC#1191