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OpenAPI / Swagger Spec Explorer

Paste an OpenAPI 3.x spec (JSON, or simple YAML) to browse endpoints grouped by tag, inspect parameters and request bodies, and copy ready-to-run curl commands. Everything runs in your browser — nothing is uploaded.

About this tool

Parses OpenAPI 3.x specs with the browser's native JSON parser, falling back to a small built-in YAML reader that covers the common indentation-based subset (nested maps, lists, plain scalars). Complex YAML features like anchors, multi-document files, or flow-style nesting are out of scope — if a YAML spec fails to parse, convert it to JSON and paste that instead. Local $ref pointers into components/schemas are resolved with a circular-reference guard, and curl commands use the first server URL plus a placeholder body derived from the request schema.

Your spec never leaves the page — there is no server, no upload, and no tracking of tool inputs.

Found this useful? 113 free, browser-only tools by Yuvrajsinh Jadav — an engineer who ships production AI systems. No account, nothing sent anywhere.