app.py

from fastapi import FastAPI
from transformers import pipeline

## create a new FASTAPI app instance
app=FastAPI()

# Initialize the text generation pipeline
pipe=pipeline("text2text-generation",model="google/flan-t5-small")


@app.get("/")
def home():
    return {"message": "Hello World"}

#  Define a function to handle the GET request at '/generate'

@app.get("/generate")
def generate(text:str):
    ## use the pipeline from goven input text
    output = pipeline(text)

    ## return the generayed text in Json response
    return {"output":output[0]['generated_text']}