app.py

import os
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI(title="Minimal FastAPI on HF Spaces")

class Item(BaseModel):
    text: str

@app.get("/")
def read_root():
    return {"hello": "world"}

@app.post("/echo")
def echo(item: Item):
    return {"echo": item.text}

# Needed when running in a Python Space: bind to 0.0.0.0 and the provided PORT
if __name__ == "__main__":
    import uvicorn
    uvicorn.run(
        app,
        host="0.0.0.0",
        port=int(os.environ.get("PORT", 7860)),
    )