Symfony integration bundle for Model Context Protocol using the Symfony AI MCP SDK symfony/mcp-sdk.

Currently only supports tools as server via Server-Sent Events (SSE) and STDIO.

composer require symfony/mcp-bundle

At first, you need to decide whether your application should act as a MCP server or client. Both can be configured in the mcp section of your config/packages/mcp.yaml file.

Currently only supports tools.

To use your application as an MCP server, exposing tools to clients like Claude Desktop, you need to configure in the client_transports section the transports you want to expose to clients. You can use either STDIO or SSE.

Not implemented yet.

To use your application as an MCP client, integrating other MCP servers, you need to configure the servers you want to connect to. You can use either STDIO or Server-Sent Events (SSE) as transport methods.

You can find a list of example Servers in the MCP Server List.

Tools of those servers are available in your AI Bundle configuration and usable in your agents.

mcp: app: 'app' # Application name to be exposed to clients version: '1.0.0' # Application version to be exposed to clients # Configure this application to act as an MCP server # Currently exposes tools registered in Symfony AI Bundle client_transports: stdio: true # Enable STDIO via command sse: true # Enable Server-Sent Event via controller # Configure MCP servers to be used by this application # Not implemented yet servers: name: transport: 'stdio' # Transport method to use, either 'stdio' or 'sse' stdio: command: 'php /path/bin/console mcp' # Command to execute to start the client arguments: [] # Arguments to pass to the command sse: url: 'http://localhost:8000/sse' # URL to SSE endpoint of MCP server