MCP Haystack Demo
Demo for using MCP Servers in a Haystack Pipeline
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README
MCP Haystack Demo
A Haystack integration connecting to MCP servers with a focus on Google Maps API integration.
Overview
This project implements MCPServer, a Haystack Toolset that connects to remote MCP servers and dynamically loads available tools. The implementation is based on the recently added Toolset abstraction in Haystack (https://github.com/deepset-ai/haystack/pull/9161).
Features
- Connect to remote MCP servers using SSE (Server-Sent Events)
- Dynamically discover and load available tools
- Seamless integration with Haystack pipelines
Installation
Use uv to install the dependencies.
Quick Start
Check the demo notebook for a complete example connecting to a Google Maps MCP server.
Running the Google Maps MCP Server
docker run -it --rm -p 8000:8000 -e GOOGLE_MAPS_API_KEY=$GOOGLE_MAPS_API_KEY supercorp/supergateway \
--stdio "npx -y @modelcontextprotocol/server-google-maps" \
--port 8000
Connecting to the Server
from haystack.tools import MCPServer, SSEServerInfo
from haystack.components.tools import ToolInvoker
# Create server info
server_info = SSEServerInfo(
base_url="http://localhost:8000",
)
# Create the MCP server toolset
mcp_server = MCPServer(server_info=server_info)
# Use the toolset with a ToolInvoker or ChatGenerator component
invoker = ToolInvoker(tools=mcp_server)
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