Please Provide an example of Agent communicates with multiple mcp servers with sse transport and choose right tool

[aubhadia]

can you please provide an example of How fast Agent can communicate with multiple MCP servers with SSE transport and choose the right tool?

[evalstate]

Hi @aubhadia

Here is an example config for Home Assistant via SSE - note v0.2.7 includes support for setting the headers:

import asyncio

from mcp_agent.core.fastagent import FastAgent
fast: FastAgent = FastAgent("Home Assistant Demo")


@fast.agent("hass",servers=["hass","prompts"],instruction="you have control of my house",model="sonnet")

async def main() -> None:
    # Use the app's context manager
    async with fast.run() as agent:
        await agent.interactive()


if __name__ == "__main__":
    asyncio.run(main())

mcp:
    hass:
      transport: sse
      url: http://192.168.5.9:8123/mcp_server/sse
      headers:
        Authorization: "Bearer XXXXXXX"

Works well, and easy to add additional servers. Does this help?

[aubhadia]

HI @evalstate I am able to connect with mcp server with sse transport but after request message it throw error saying

│ meta=None content=[TextContent(type='text', text="Error executing tool '': Server 'mcp' not found in registry.", annotations=None)] isError=True │

This is how my agent code looks like

`import asyncio
from mcp_agent.core.fastagent import FastAgent

fast = FastAgent("FastAgent Example")

@fast.agent(instruction="You are a helpful AI Agent", servers=["mcp-server"])
async def main():
async with fast.run() as agent:
print("Agent is running...", agent)
await agent.interactive()

if name == "main":
asyncio.run(main())`

[aubhadia]

@evalstate I found the issue. It does not take server names with "-" (e.g mcp-server)

I changed it to single string mcp and it is working fine. May be it needs a fix