Thumbnail MCP Tool

A Replicate-based tool for generating thumbnail images via the MCP protocol.

Setup

1. Make sure you have a Replicate API key
2. Set the environment variable REPLICATE_API_KEY with your key
3. Install dependencies:

   composer install
   

Testing the Tool

Method 1: Using the Mock Test

This method uses a mocked platform to test the tool structure without making real API calls:

php test_thumbnail.php

Method 2: Using the Real API

This method makes actual API calls to Replicate:

REPLICATE_API_KEY=your_api_key php test_real.php

Method 3: Using the Symfony Command

This is the most realistic test as it uses the Symfony DI container:

# Make sure you have the API key in .env.local
bin/console app:test-thumbnail "Your Name"

Tool Usage in MCP

The tool is registered via the AsTool attribute and will be available in the MCP toolbox with the name mcp_thumbnail. It takes a single string parameter name that will be used in the prompt.

Example usage:

{
  "name": "John Doe"
}

The tool will return a string with the URL of the generated thumbnail image.