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import contextlib |
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from fastapi import FastAPI |
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from fastapi.responses import HTMLResponse |
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from echo_server import mcp as echo_mcp |
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from math_server import mcp as math_mcp |
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import os |
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@contextlib.asynccontextmanager |
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async def lifespan(app: FastAPI): |
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async with contextlib.AsyncExitStack() as stack: |
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await stack.enter_async_context(echo_mcp.session_manager.run()) |
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await stack.enter_async_context(math_mcp.session_manager.run()) |
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yield |
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app = FastAPI(lifespan=lifespan) |
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@app.get("/", response_class=HTMLResponse) |
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async def index(): |
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return """ |
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<!doctype html> |
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<html lang="en"> |
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<head> |
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<meta charset="utf-8" /> |
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<meta name="viewport" content="width=device-width, initial-scale=1" /> |
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<title>Multiple MCP Servers Template</title> |
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<style> |
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body { font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, sans-serif; margin: 2rem; line-height: 1.5; } |
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code, pre { background: #f6f8fa; padding: 0.2rem 0.4rem; border-radius: 4px; } |
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a { color: #2563eb; text-decoration: none; } |
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a:hover { text-decoration: underline; } |
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.container { max-width: 800px; } |
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h1 { margin-bottom: 0.5rem; } |
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.routes { margin-top: 1rem; } |
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</style> |
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</head> |
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<body> |
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<div class="container"> |
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<h1>Multiple MCP Servers Template</h1> |
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<p>This FastAPI app demonstrates how to host multiple Model Context Protocol (MCP) servers on a single server instance.</p> |
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<p>The following MCP servers are mounted under this app:</p> |
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<ul class="routes"> |
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<li><a href="/echo">/echo</a> — Echo MCP server</li> |
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<li><a href="/math">/math</a> — Math MCP server</li> |
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</ul> |
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<p>Use these routes as sub-apps or as examples for adding more MCP servers.</p> |
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</div> |
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</body> |
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</html> |
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""" |
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app.mount("/echo", echo_mcp.streamable_http_app()) |
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app.mount("/math", math_mcp.streamable_http_app()) |
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PORT = os.environ.get("PORT", 10000) |
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if __name__ == "__main__": |
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import uvicorn |
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uvicorn.run(app, host="0.0.0.0", port=PORT) |
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