Stoplight

Stoplight Prism

Prism is an open-source HTTP mock and proxy server that turns any OpenAPI v2/v3 or Postman Collection file into a realistic API server with mocking, transformations, and validations. Enables frontend and backend teams to develop in parallel using API descriptions. Can be used as a local CLI tool or via hosted Stoplight mock servers. Supports dynamic example generation, request/response validation, and content negotiation.

GitHub

Documentation

📖
Documentation
https://docs.stoplight.io/docs/prism

SDKs

📦
GitHubRepository
https://github.com/stoplightio/prism

Other Resources

🔗
NPM
https://www.npmjs.com/package/@stoplight/prism-cli

API entry from apis.yml

apis.yml Raw ↑ 
aid: stoplight:prism
name: Stoplight Prism
description: Prism is an open-source HTTP mock and proxy server that turns any OpenAPI v2/v3 or Postman
  Collection file into a realistic API server with mocking, transformations, and validations. Enables
  frontend and backend teams to develop in parallel using API descriptions. Can be used as a local CLI
  tool or via hosted Stoplight mock servers. Supports dynamic example generation, request/response validation,
  and content negotiation.
humanURL: https://stoplight.io/open-source/prism
tags:
- API Testing
- Mock Servers
- Open Source
- OpenAPI
- Postman
- Proxy
- Validation
properties:
- type: Documentation
  url: https://docs.stoplight.io/docs/prism
- type: GitHubRepository
  url: https://github.com/stoplightio/prism
- type: NPM
  url: https://www.npmjs.com/package/@stoplight/prism-cli