AndrewWalsh/openapi-devtools

Health v2 · maintenance only

Adoption not part of the score

4304 stars · 86 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A browser extension for Chrome and Firefox that automatically generates OpenAPI 3.1 specifications in real time from network requests observed in DevTools. It merges headers, bodies, and query parameters per endpoint, detects path parameters, and lets users view specs with Redoc and export or share sessions.

Use cases

• reverse engineer an undocumented api from a website
• generate openapi spec from browser network traffic
• discover api endpoints of any web app
• create api documentation without backend access
• capture http requests and turn them into an openapi 3.1 spec
• export api specification from devtools

When to choose

• you need to document or understand an undocumented HTTP API by observing real traffic
• you want a zero-setup browser-based tool for spec generation
• you work with OpenAPI 3.1 and want automatic merging of request/response data

When to avoid

• you need a desktop proxy-based capture for non-browser traffic - use the successor project demystify or mitm2swagger
• you want to generate specs from HAR files via CLI
• the project is superseded by a rewritten version, so new feature development happens elsewhere

Facets

plugin · maturity maintenance

api-documentation developer-tools http-client json apis developer-tools web-development documentation browser-extension browser openapi openapi31 devtools api-specification reverse-engineering chrome-extension firefox-addon network-requests typescript

Member repositories

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markdown · JSON · MCP: product_card(name="AndrewWalsh/openapi-devtools")