Insomnia
An API collaboration platform for designing, testing, debugging, mocking, and managing APIs and MCP servers.
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About Insomnia
Insomnia is an AI-native platform for API collaboration. It supports API testing, debugging, design, MCP, and local, Git, or cloud workflows.
What you can do
Creates and previews OpenAPI specifications using a spec-first API design workflow.
Generates request collections, API tests, and API mocks from an OpenAPI specification.
Runs collection tests with pre-request and after-response scripting.
Connects to MCP servers and tests tools and resources using custom parameters.
Generates mock servers from natural-language descriptions, including routes, responses, and configurations.