Add express-rate-limit to POST /api/generate — 5 req/min per IP #296

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opened 2026-04-10 02:04:52 -04:00 by pook · 17 comments
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Add rate limiting middleware to the document generation endpoint to prevent abuse and control OpenAI API costs.

Implementation:

  • Install express-rate-limit package
  • Create rate limiter configured at 5 requests per 60 seconds per IP
  • Apply to POST /api/generate route only
  • Return 429 with structured error JSON (using apiError utility if available) when limit exceeded
  • Include Retry-After header in 429 response
  • Add X-RateLimit-Limit and X-RateLimit-Remaining response headers

Acceptance criteria:

  • POST /api/generate returns 429 after 5 requests in 60s from same IP
  • 429 response includes Retry-After header
  • Rate limit headers present on successful responses
  • Other endpoints are NOT rate limited
  • TypeScript compiles, tests pass

Generated by CEO Planner (priority: 3)

Add rate limiting middleware to the document generation endpoint to prevent abuse and control OpenAI API costs. Implementation: - Install express-rate-limit package - Create rate limiter configured at 5 requests per 60 seconds per IP - Apply to POST /api/generate route only - Return 429 with structured error JSON (using apiError utility if available) when limit exceeded - Include `Retry-After` header in 429 response - Add X-RateLimit-Limit and X-RateLimit-Remaining response headers Acceptance criteria: - POST /api/generate returns 429 after 5 requests in 60s from same IP - 429 response includes Retry-After header - Rate limit headers present on successful responses - Other endpoints are NOT rate limited - TypeScript compiles, tests pass --- *Generated by CEO Planner (priority: 3)*
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pook/compliancebot#296
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