feat(cloudflare): add IP-based rate limiting for MCP and OAuth routes #619
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Implements rate limiting for MCP clients at 60 requests per minute per IP to protect against high traffic volumes. Built on Cloudflare rate limit bindings with privacy-preserving SHA-256 IP hashing. Key changes: - Add MCP_RATE_LIMITER binding (60 req/60s per IP) - Create reusable rate-limiter utility with graceful degradation - Create client-ip utility for consistent IP extraction across routes - Apply rate limiting before OAuth processing in index.ts - Update app.ts and search.ts to use centralized IP extraction - Add error handling and Sentry logging when IP cannot be extracted - Update tests to include required CF-Connecting-IP headers 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Code <noreply@anthropic.com>
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Implements rate limiting for MCP clients at 60 requests per minute per IP to protect against high traffic volumes. Built on Cloudflare rate limit bindings with privacy-preserving SHA-256 IP hashing.
Key changes:
🤖 Generated with Claude Code