REST-to-Postman MCP

What is REST-to-Postman MCP?

REST-to-Postman MCP is a Model Context Protocol (MCP) server that converts REST API code (e.g., NestJS controllers, FastAPI/Flask endpoints) into Postman collections and environments. It is designed for developers who want to automatically sync their REST API endpoints and environment configurations with Postman.

How to use REST-to-Postman MCP?

Install via Smithery with npx -y @smithery/cli install @runninghare/rest-to-postman-mcp --client claude or run directly with npx -y rest-to-postman@latest --postman-api-key your_api_key --postman-workspace-id your_workspace_id. The server exposes two tools: rest_to_postman_env (for environment variables) and rest_to_postman_collection (for API endpoints). Integrate with Claude Desktop, Cursor, Windsurf, or Roo Cline Editor.

Key features of REST-to-Postman MCP

• Converts REST API code to Postman collections automatically.
• Syncs environment variables with Postman environments.
• Supports Bearer token and other authentication methods.
• Intelligent merging of new endpoints with existing collections.
• Handles sensitive environment variables automatically.
• Supports both stdio and SSE transport modes.

Use cases of REST-to-Postman MCP

• Generate a Postman collection from a NestJS TypeScript controller.
• Sync API environment variables (e.g., base URL, tokens) into Postman environments.
• Update an existing Postman collection when new API endpoints are added.
• Keep Postman collections in sync with a FastAPI or Flask backend.
• Use in Cursor to create Postman collections directly from code prompts.

FAQ from REST-to-Postman MCP

What prerequisites are needed to run REST-to-Postman MCP?

Bun v1.2.2 or later, a Postman API Key, and a Postman Workspace ID are required.

What transport modes does REST-to-Postman MCP support?

It supports both stdio (default) and SSE transport modes. Use --sse flag to enable SSE mode.

What tools does REST-to-Postman MCP provide?

Two tools: rest_to_postman_env for creating/updating Postman environments and rest_to_postman_collection for creating/updating Postman collections.

How do I provide Postman credentials to REST-to-Postman MCP?

Pass them as command-line arguments (--postman-api-key and --postman-workspace-id) or set environment variables POSTMAN_API_KEY and