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MCP API Server

by fikri2992
GitHub
TypeScript
MIT License
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MCP API Server

A Model Context Protocol (MCP) server that provides HTTP API calling capabilities. This server allows MCP clients to make HTTP requests (GET, POST, PUT, DELETE) through standardized MCP tools.

Features

  • 🚀 HTTP API Tools: GET, POST, PUT, DELETE request support
  • 🔒 Security: Request validation with configurable security policies
  • 📝 Logging: Comprehensive debug logging and request tracking
  • ⚙️ Configurable: Flexible configuration via CLI args and environment variables
  • 🛡️ Error Handling: Robust error handling with detailed error messages
  • 🔄 Graceful Shutdown: Proper cleanup and shutdown handling

Installation

Run directly without installation:

npx mcp-api-server

Global Installation

npm install -g mcp-api-server mcp-api-server

Local Installation

npm install mcp-api-server npx mcp-api-server

Usage

Basic Usage

# Start the server mcp-api-server # Start with debug logging mcp-api-server --debug # Allow localhost requests (useful for development) mcp-api-server --allow-localhost # Allow private IP requests mcp-api-server --allow-private-ips # Show help mcp-api-server --help

Environment Variables

Configure the server using environment variables:

# Enable debug logging DEBUG=true mcp-api-server # Set custom timeout (in milliseconds) API_TIMEOUT=60000 mcp-api-server # Allow localhost and private IPs ALLOW_LOCALHOST=true ALLOW_PRIVATE_IPS=true mcp-api-server # Set maximum response length (in bytes) MAX_RESPONSE_LENGTH=100000 mcp-api-server # Set custom user agent USER_AGENT="MyApp/1.0.0" mcp-api-server

Configuration Options

OptionEnvironment VariableDefaultDescription
--debugDEBUGfalseEnable debug logging
--allow-localhostALLOW_LOCALHOSTfalseAllow requests to localhost/127.0.0.1
--allow-private-ipsALLOW_PRIVATE_IPSfalseAllow requests to private IP ranges
N/AAPI_TIMEOUT30000Request timeout in milliseconds
N/AMAX_RESPONSE_LENGTH50000Maximum response length in bytes
N/AUSER_AGENTMCP-API-Server/1.0.0Custom user agent string

Available Tools

The server provides the following MCP tools:

api_get

Make an HTTP GET request.

Parameters:

  • url (string): The URL to request
  • headers (object, optional): HTTP headers to include

api_post

Make an HTTP POST request.

Parameters:

  • url (string): The URL to request
  • body (string, optional): Request body
  • headers (object, optional): HTTP headers to include

api_put

Make an HTTP PUT request.

Parameters:

  • url (string): The URL to request
  • body (string, optional): Request body
  • headers (object, optional): HTTP headers to include

api_delete

Make an HTTP DELETE request.

Parameters:

  • url (string): The URL to request
  • headers (object, optional): HTTP headers to include

MCP Client Configuration

To use this server with an MCP client, add it to your MCP configuration:

Claude Desktop Configuration

Add to your claude_desktop_config.json:

{ "mcpServers": { "api-server": { "command": "npx", "args": ["mcp-api-server"], "env": { "DEBUG": "false" } } } }

With Custom Configuration

{ "mcpServers": { "api-server": { "command": "npx", "args": ["mcp-api-server", "--debug", "--allow-localhost"], "env": { "API_TIMEOUT": "60000", "MAX_RESPONSE_LENGTH": "100000" } } } }

Development

Building from Source

# Clone the repository git clone https://github.com/yourusername/mcp-api-server.git cd mcp-api-server # Install dependencies npm install # Build the project npm run build # Run tests npm test # Run the server npm start

Development Mode

# Watch mode for development npm run dev # Run with development settings npm run start:dev # Run individual test suites npm run test:validation npm run test:handlers npm run test:flow

Security Considerations

  • By default, requests to localhost and private IP ranges are blocked
  • Use --allow-localhost and --allow-private-ips flags carefully in production
  • The server validates all requests and sanitizes responses
  • Request timeouts prevent hanging connections
  • Response size limits prevent memory exhaustion

Error Handling

The server provides detailed error messages for:

  • Invalid URLs
  • Network timeouts
  • JSON parsing errors
  • Validation failures
  • HTTP errors

All errors are logged with timestamps and context for debugging.

License

MIT License - see LICENSE file for details.

Contributing

  1. Fork the repository
  2. Create a feature branch
  3. Make your changes
  4. Add tests if applicable
  5. Submit a pull request

Support

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

A Model Context Protocol server that enables AI assistants to make HTTP requests (GET, POST, PUT, DELETE) to external APIs through standardized MCP tools.

  1. Features
    1. Installation
      1. NPX (Recommended)
      2. Global Installation
      3. Local Installation
    2. Usage
      1. Basic Usage
      2. Environment Variables
      3. Configuration Options
    3. Available Tools
      1. api_get
      2. api_post
      3. api_put
      4. api_delete
    4. MCP Client Configuration
      1. Claude Desktop Configuration
      2. With Custom Configuration
    5. Development
      1. Building from Source
      2. Development Mode
    6. Security Considerations
      1. Error Handling
        1. License
          1. Contributing
            1. Support

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