Postman Tool Generation MCP server

This MCP server transforms Postman collections and requests into type-safe AI agent tools for various frameworks. It provides a bridge between your Postman account and AI systems through the Model Context Protocol (MCP).

Installation

To get started with the Postman Tool Generation MCP server:

1. Install dependencies:

   npm install
   

2. Build the server:

   npm run build
   

3. Configure MCP settings by adding the following to your Claude settings file (cline_mcp_settings.json):

   {
     "mcpServers": {
       "postman-ai-tools": {
         "command": "node",
         "args": [
           "/path/to/postman-tool-generation-server/build/index.js"
         ],
         "env": {
           "POSTMAN_API_KEY": "your-postman-api-key"
         },
         "disabled": false,
         "autoApprove": []
       }
     }
   }
   

Usage

The server provides a single tool called generate_ai_tool that can be used through any MCP-compatible client like Claude Desktop or Cline.

Tool Parameters

The generate_ai_tool accepts the following parameters:

{
  collectionId: string;    // The Public API Network collection ID
  requestId: string;       // The public request ID
  language: "javascript" | "typescript";  // Programming language to use
  agentFramework: "openai" | "mistral" | "gemini" | "anthropic" | "langchain" | "autogen";  // AI framework
}

Example Usage

You can use this tool with natural language in Claude:

Create an AI tool for:
collectionID: 12345-abcde
requestID: 67890-fghij
typescript
openai

Or programmatically through an MCP client:

const result = await use_mcp_tool({
  server_name: "postman-ai-tools",
  tool_name: "generate_ai_tool",
  arguments: {
    collectionId: "your-collection-id",
    requestId: "your-request-id",
    language: "typescript",
    agentFramework: "openai"
  }
});

Generated Code

The tool generates type-safe code that includes:

• Type definitions for request/response
• Error handling
• API integration
• OpenAI function definitions
• Documentation and examples

Environment Variables

The server requires the following environment variable:

• POSTMAN_API_KEY: Your Postman API key

Error Handling

The server includes comprehensive error handling that covers:

• Invalid parameters
• API failures
• JSON parsing errors
• Network issues

All error responses include detailed messages to help diagnose issues quickly.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "postman-ai-tools" '{"command":"node","args":["/path/to/postman-tool-generation-server/build/index.js"],"env":{"POSTMAN_API_KEY":"your-postman-api-key"},"disabled":false,"autoApprove":[]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "postman-ai-tools": {
            "command": "node",
            "args": [
                "/path/to/postman-tool-generation-server/build/index.js"
            ],
            "env": {
                "POSTMAN_API_KEY": "your-postman-api-key"
            },
            "disabled": false,
            "autoApprove": []
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "postman-ai-tools": {
            "command": "node",
            "args": [
                "/path/to/postman-tool-generation-server/build/index.js"
            ],
            "env": {
                "POSTMAN_API_KEY": "your-postman-api-key"
            },
            "disabled": false,
            "autoApprove": []
        }
    }
}

3. Restart Claude Desktop for the changes to take effect