app.py

import gradio as gr

def letter_counter(word, letter):
    word = word.lower()
    letter = letter.lower()
    return word.count(letter)

demo = gr.Interface(
    fn=letter_counter,
    inputs=["textbox", "textbox"],
    outputs="number",
    title="Letter Counter",
    description="Enter text and a letter to count how many times the letter appears in the text."
)

if __name__ == "__main__":
    demo.launch(mcp_server=True)  # This is the key part to enable MCP