Postman MCP Server

A generic MCP server for executing Postman collections — supports v2.1 collections, environments, variable chaining, and scripting

Local serverstdioPython

What is the Postman MCP server?

A generic MCP server for executing Postman collections — supports v2.1 collections, environments, variable chaining, and scripting. Exposed over MCP by the postman mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

What it actually does

A full-featured Model Context Protocol (MCP) server for executing Postman collections using Python. Enables AI assistants to run, inspect, and manage API test workflows from any Postman v2.1 collection file — with a strict, safe execution pipeline that never guesses credentials.

Its toolset

Everything the assistant can do here goes through one of these:

  • prepare_collection — Validates collection + scans variables + generates config file for user to fill
  • run_collection — Executes a collection after validating all requirements are met
  • inspect_collection — View collection metadata, folders, and request listing
  • dry_run_collection — Preview resolved URLs without making HTTP calls
  • check_status — Check if a collection is ready to execute (config filled?)
  • list_collections — Scan a directory for available collection files

Configuration

  • Python 3.10+ - mcp[cli] package (FastMCP framework) - No additional dependencies for core features (uses stdlib http.client) - Optional: dukpy for full JavaScript execution engine

Adding it to your client

Installation goes through your MCP client rather than a global install: point it at @modelcontextprotocol/inspector on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

When to reach for it

Among the file and storage access options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Postman's toolset — prepare_collection, run_collection, inspect_collection and 3 more — is a fair guide to whether it matches your workflow.

This entry was verified against Postman's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the postman mcp server does with a few real requests.

Available tools

ToolWhat it does
prepare_collectionValidates collection + scans variables + generates config file for user to fill
run_collectionExecutes a collection after validating all requirements are met
inspect_collectionView collection metadata, folders, and request listing
dry_run_collectionPreview resolved URLs without making HTTP calls
check_statusCheck if a collection is ready to execute (config filled?)
list_collectionsScan a directory for available collection files

How to install the Postman MCP server

{
  "mcpServers": {
    "postman-runner": {
      "command": "uvx",
      "args": ["postman-runner-mcp"],
      "disabled": false,
      "autoApprove": []
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Python 3.10+ - mcp[cli] package (FastMCP framework) - No additional dependencies for core features (uses stdlib http.client) - Optional: dukpy for full JavaScript execution engine

Example prompts to try

  • Use Postman to prepare collection.
  • Use Postman to run collection.
  • Use Postman to inspect collection.

Frequently asked questions

It connects Postman to MCP-compatible AI assistants such as Claude and Cursor, exposing 6 tools (prepare_collection, run_collection, inspect_collection, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Postman directly.