Swagger Client is a JavaScript module that allows you to fetch, resolve, and interact with Swagger/OpenAPI documents.

This is the new version of swagger-js, 3.x. The new version supports Swagger 2.0 as well as OpenAPI 3.

Want to learn more? Check out our FAQ.

For features known to be missing from 3.x please see the Graveyard.

For the older version of swagger-js, refer to the 2.x branch.

The npm package is called swagger-client and the GitHub repository is swagger-js. We'll be consolidating that soon. Just giving you the heads-up. You may see references to both names.

The OpenAPI Specification has undergone multiple revisions since initial creation in 2010. Compatibility between Swagger Client and the OpenAPI Specification is as follows:

Swagger Client uses Scarf to collect anonymized installation analytics. These analytics help support the maintainers of this library and ONLY run during installation. To opt out, you can set the scarfSettings.enabled field to false in your project's package.json:

// package.json
{
  // ...
  "scarfSettings": {
    "enabled": false
  }
  // ...
}

Alternatively, you can set the environment variable SCARF_ANALYTICS to false as part of the environment that installs your npm packages, e.g., SCARF_ANALYTICS=false npm install.

• Installation
• Tags Interface
• HTTP client for OAS operations
• OpenAPI Definition Resolver
• HTTP Client
• Swagger Client API

• Contributing
• Setting up
• Scripts

• Migration guide
• Graveyard

swagger-client requires Node.js >=12.20.0 and uses different fetch implementation depending on Node.js version.

• >=12.20.0 <18 - node-fetch@3
• >=18 - native Node.js fetch

NOTE: swagger-client minimum Node.js runtime version aligns with Node.js Releases which means that we can drop support for EOL (End Of Life) Node.js versions without doing major version bump.

swagger-client works in the latest versions of Chrome, Safari, Firefox, and Edge and uses native fetch implementation provided by each supported browser.

Please disclose any security-related issues or vulnerabilities by emailing security@swagger.io, instead of using the public issue tracker.