API Architecture Tools

Free API architecture analysis tools: map API operation dependencies, surface endpoint hot spots, and classify retry safety from OpenAPI specs. By Graph Tools.

API Dependency Mapper — Infer operation, schema, and authentication dependencies from an OpenAPI spec to inform architecture reviews
API Endpoint Heatmap — Surface endpoint, method, and tag hot spots from an OpenAPI spec to prioritize security reviews and governance
HTTP Retry Safety Analyzer — Classify OpenAPI operations as retry-safe or unsafe based on HTTP method semantics and idempotency indicators