Postmancer
A standalone MCP server for API testing and management, allowing AI assistants to interact with RESTful APIs through natural language.
Overview
Postmancer is an MCP (Model Context Protocol) server that enables AI assistants like Claude to make HTTP requests, manage collections of API endpoints, and test API responses. It provides similar functionality to tools like Postman or Insomnia but designed specifically for AI assistants.
Features
- Make HTTP requests to any REST API
- Save and organize requests in collections
- Set and use environment variables with variable substitution
- Multiple authentication methods (Basic, Bearer, API Key, OAuth2)
- Request/response history and testing
Quick Start
Installation
# Install globally
npm install -g postmancer
# Or run directly with npx
npx postmancerUsing with Claude Desktop
Add this to your Claude Desktop configuration file:
- Windows:
%USERPROFILE%\.claude\claude_desktop_config.json - macOS/Linux:
~/.claude/claude_desktop_config.json
{
"mcpServers": {
"postmancer": {
"command": "npx",
"args": ["-y", "postmancer"],
"env": {
"LOG_LEVEL": "info"
}
}
}
}
