Swagger is the original toolset for OpenAPI-based API documentation. Swagger UI renders your OpenAPI spec as an interactive documentation page where developers can try endpoints directly in the browser. Swagger Editor lets you write and validate specs in real time.
The OpenAPI specification (originally Swagger Spec) is the industry standard for describing REST APIs. Most API gateways, code generators, and testing tools support it. Swagger Codegen generates client SDKs and server stubs from your spec in dozens of languages.
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