Advanced Usage
MCP Transport
Understanding MCP transport methods and how to choose between them
FastAPI-MCP supports two MCP transport methods for client-server communication: HTTP transport (recommended) and SSE transport (backwards compatibility).
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Understanding MCP transport methods and how to choose between them
from fastapi import FastAPI
from fastapi_mcp import FastApiMCP
app = FastAPI()
mcp = FastApiMCP(app)
# Mount using HTTP transport (recommended)
mcp.mount_http()
from fastapi import FastAPI
from fastapi_mcp import FastApiMCP
app = FastAPI()
mcp = FastApiMCP(app)
# Mount using SSE transport (backwards compatibility)
mcp.mount_sse()
from fastapi import FastAPI, APIRouter
from fastapi_mcp import FastApiMCP
app = FastAPI()
router = APIRouter(prefix="/api/v1")
mcp = FastApiMCP(app)
# Mount to custom path with HTTP transport
mcp.mount_http(router, mount_path="/my-http")
# Or with SSE transport
mcp.mount_sse(router, mount_path="/my-sse")
{
"mcpServers": {
"fastapi-mcp": {
"url": "http://localhost:8000/mcp"
}
}
}
{
"mcpServers": {
"fastapi-mcp": {
"url": "http://localhost:8000/sse"
}
}
}