Read your API contract

Your API.
Clearly documented.

Open a YAML or JSON contract and explore its endpoints, parameters, responses, and schemas with Swagger UI.

Your data never leaves this browser
Swagger ViewerRead · Explore · Understand
API contract source
YAML / JSON0 characters

YAML or JSON · Up to 2 MB

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API documentation

Read-only viewer. Your contract stays in this browser.

Swagger UI uses English labels. Contract text is displayed in its original language.

Load a contract to view its documentation

06 / API

Understand the contract.
Before writing code.

01

Supported contracts

Read Swagger 2.0 and OpenAPI 3.0 or 3.1 contracts, including internal references and reusable schemas.

02

One self-contained file

Use a single YAML or JSON document. Bundle external references into the contract before opening it.

03

Explore without requests

Inspect operations, examples, and authentication definitions. This viewer does not execute API calls or use an online validator.