Agent with an SSE MCP Server¶

Source: agent_library/agents_101/mcp_agent_sse

Connect an OpenSageAgent to an MCP server using SSE protocol. The example bundles an fs_server.sh helper that launches the official filesystem MCP server through supergateway on port 3001.

Agent Source Code¶

agent_library/agents_101/mcp_agent_sse/agent.py

from google.adk.models.lite_llm import LiteLlm
from google.adk.tools.mcp_tool.mcp_toolset import MCPToolset, SseConnectionParams

from opensage.agents.opensage_agent import OpenSageAgent

root_agent = OpenSageAgent(
    name="mcp_client_agent",
    model=LiteLlm(model="anthropic/claude-opus-4-7"),
    instruction="You can use filesystem tools.",
    tools=[
        MCPToolset(
            connection_params=SseConnectionParams(url="http://127.0.0.1:3001/sse")
        )
    ],
)

The bundled fs_server.sh script (see the source repo) starts the MCP filesystem server and exposes it over SSE.

Run It¶

Two processes are required: the MCP server and the agent.

Terminal 1: launch the filesystem MCP server:

cd agent_library/agents_101/mcp_agent_sse
./fs_server.sh

Info

Edit the path inside fs_server.sh to point at a directory you want the agent to browse.

Terminal 2: run the agent:

uv run opensage web \
  --agent agent_library/agents_101/mcp_agent_sse \
  --port 8000

Open http://localhost:8000 and try asking agent to manage files through the MCP server.