Browser extensionSoftware development

openapi-devtools

Generate and export OpenAPI 3.1 specifications from live browser network traffic.

Stars
4,298
Forks
85
License
MIT
Updated
Updated Jul 13, 2026

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Project overview

OpenAPI DevTools is a Chrome and Firefox extension that watches network traffic in a dedicated DevTools tab and builds an OpenAPI 3.1 specification as an application is used. It merges requests, responses, headers, bodies, query parameters, and configured path parameters, then lets users preview, export, or share the result. The repository now directs users to the rewritten successor, Demystify, for the expanded and final version.

Repository facts

Primary language
TypeScript
License
MIT
Repository updated
Jul 13, 2026
Default branch
main

Resource types

Browser extension

Use cases

Software development

Runtime

Browser

Protocols & integrations

OpenAPI

Audience

Developers

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