Postman MCP Server

What is Postman MCP Server?

An MCP server that enables running Postman collections using Newman, allowing LLMs to execute API tests and get detailed results through a standardized interface.

How to use Postman MCP Server?

Install via Smithery or manually with pnpm install and pnpm build. Add the server to your Claude desktop configuration, then use the run-collection tool by providing a collection path or URL, with optional environment, globals, and iteration count parameters.

Key features of Postman MCP Server

• Run Postman collections using Newman
• Support for environment files
• Support for global variables
• Detailed test results with pass/fail summary
• Execution timings and failure information

Use cases of Postman MCP Server

• Execute API tests by asking an LLM in natural language
• Automate regression testing of Postman collections
• Integrate API test results into AI‑powered workflows
• Run collections with multiple iterations for load verification

FAQ from Postman MCP Server

What are the prerequisites for running Postman MCP Server?

You need Node.js, pnpm, and the Newman runner (installed via pnpm install and built with pnpm build).

How do I specify a Postman collection to run?

Use the required collection parameter with a local file path or URL to the collection JSON.

Can I set environment variables or global variables?

Yes, provide an optional environment file path/URL and/or a globals file path/URL.

What information is included in the test results?

The response includes overall success/failure status, a summary (total, passed, failed), failure details, and execution timings.