MCP API Caller

A Model Context Protocol (MCP) server for making API calls with authentication support.

Features

• Configure multiple API endpoints with authentication

• Support for Bearer token, API key, and Basic authentication

• HTTP methods: GET, POST, PUT, DELETE

• NEW: Form data POST requests with file upload support

Tools

1. set_api_config

Configure an API endpoint with authentication.

Parameters:

• name: Configuration name

• baseUrl: Base URL for the API

• headers: Default headers (optional)

• authentication: Authentication configuration (optional)

Authentication Types:

• bearer: Bearer token authentication

• api_key: API key authentication

• basic: Basic authentication

2. list_api_configs

List all configured APIs.

3. delete_api_config

Delete an API configuration.

Parameters:

• name: Name of the API configuration to delete

4. api_get

Make a GET request to a configured API.

Parameters:

• configName: Name of the API configuration

• endpoint: API endpoint

• queryParams: Query parameters (optional)

• headers: Additional headers (optional)

5. api_post

Make a POST request with JSON body.

Parameters:

• configName: Name of the API configuration

• endpoint: API endpoint

• body: Request body (JSON)

• headers: Additional headers (optional)

6. api_put

Make a PUT request with JSON body.

Parameters:

• configName: Name of the API configuration

• endpoint: API endpoint

• body: Request body (JSON)

• headers: Additional headers (optional)

7. api_delete

Make a DELETE request.

Parameters:

• configName: Name of the API configuration to use

• endpoint: API endpoint

• headers: Additional headers (optional)

8. api_post_form ⭐ NEW

Make a POST request with form data (supports file uploads).

Parameters:

• configName: Name of the API configuration

• endpoint: API endpoint

• fields: Array of form fields

• headers: Additional headers (optional)

Field Types:

• text: Text field with value parameter

• file: File field with filePath, fileName (optional), and contentType (optional)

Usage Examples

Basic API Configuration

{
  "name": "my_api",
  "baseUrl": "https://api.example.com",
  "headers": {
    "User-Agent": "MCP-API-Caller/1.0"
  },
  "authentication": {
    "type": "bearer",
    "token": "your_token_here"
  }
}

File Upload Example

{
  "configName": "my_api",
  "endpoint": "/upload",
  "fields": [
    {
      "name": "title",
      "type": "text",
      "value": "My Image"
    },
    {
      "name": "image",
      "type": "file",
      "filePath": "/path/to/image.jpg",
      "fileName": "custom_name.jpg",
      "contentType": "image/jpeg"
    }
  ]
}

Installation

1. Clone the repository

2. Install dependencies: npm install

3. Build the project: npm run build

4. Start the server: npm start

Development

Run in development mode: npm run dev