Design APIs with Insomnia

Insomnia Documentation

Design and preview new APIs with OpenAPI

Using Insomnia, you can create or upload an API spec to an API Collection, then call the API from the same place. Click the Spec tab on any API Collection to get started.

Insomnia can help you write or edit your spec with the following:

View a generated preview of your spec in the right pane.
Automatically linted. Errors display at the bottom of the center pane and include error type, line number, and error message
View information about your spec in the left sidebar, such as servers, request body, and schemas.
Collaboratively create APIs with an unlimited number of contributors (free accounts allow unlimited contributors on one project) and git version control.
Generate code snippets automatically in over 12 different programming languages.

Image of the generating collections and tests

Get started

Design APIs with API Collections

Use Insomnia to create APIs with a spec-first approach. Leverage OpenAPI, live API previews, and more.

Learn more →

Validate your API specs

Automatically validate OpenAPI specs with the Inso CLI and custom linting rules.

Learn more →

Collaborate on APIs

Collaborate with others and use git version control on your APIs.

Learn more →

Deploy an API with Konnect

Deploy your APIs with API Products in Konnect.

Learn more →

Learn

API specs

Insomnia provides capabilities to create, import, lint, and collaborate on API specs. You can easily generate a collection of requests from an API spec.

Learn more about API specs in Insomnia →