api.py

from fastapi import FastAPI, File, UploadFile
import shutil
import os

app = FastAPI()

@app.post("/upload")
async def upload_file(file: UploadFile = File(...)):
    upload_dir = "/tmp/uploads"
    os.makedirs(upload_dir, exist_ok=True)
    file_path = os.path.join(upload_dir, file.filename)
    with open(file_path, "wb") as buffer:
        shutil.copyfileobj(file.file, buffer)
    return {"filename": file.filename}