FastAPI + EdgeOne Pages

High performance, easy to learn, fast to code, ready for production. Modern, async, blazing fast.

cloud-functions/api/[[default]].py

from fastapi import FastAPI
from pydantic import BaseModel
import time

app = FastAPI()

class UserCreate(BaseModel):
    name: str
    email: str

@app.get("/")
async def root():
    return {
        "message": "Hello from FastAPI Cloud Function!",
        "framework": "FastAPI",
        "timestamp": time.time()
    }

@app.post("/users")
async def create_user(user: UserCreate):
    return {"id": 1, **user.dict()}

API Endpoints

GET/api/info

Returns FastAPI app metadata with Pydantic response model

GET/api/users/42

Fetch user by typed path param (user_id: int)

POST/api/users

Create user with Pydantic UserCreate model validation

Request Body:

{
  "username": "alice",
  "email": "alice@example.com"
}

GET/api/search?q=fastapi&limit=3

Search with Query() params — includes ge/le validation

MCP/api/mcp

Streamable HTTP MCP endpoint — runs initialize, lists tools, and calls the 'add' tool

High Performance

One of the fastest Python frameworks available, on par with NodeJS and Go

Auto Documentation

Interactive API documentation with Swagger UI and ReDoc built-in

Async Support

Native async/await support for high-concurrency applications