# Note: I am getting a MCP connection error in the MCP inspector
# However, the app is working fine on the localhost:8001 endpoint.
#Http
from fastapi import FastAPI
from fastapi_mcp import FastApiMCP
#Lets's create a FastAPI (api) app first
app = FastAPI(title="Calculator API")
@app.post("/multiply")
def multiply(a: float, b: float) -> float:
"""Multiplies two numbers and returns the result.
args: a = float(a) - The First Number
b = float(b) - The Second Number
returns: float: the product of two numbers a and b.
"""
return a * b
return {"result": result}
@app.post("/add")
def add(a: float, b: float) -> float:
"""Adds two numbers and returns the result.
args: a = float(a) - The First Number
b = float(b) - The Second Number
returns: float: the sum of two numbers a and b.
"""
return a + b
return {"result": result}
@app.post("/subtract")
def subtract(a: float, b: float) -> float:
"""Subtracts two numbers and returns the result.
args: a = float(a) - The First Number
b = float(b) - The Second Number
returns: float: the difference of two numbers a and b.
"""
return a - b
return {"result": result}
@app.post("/divide")
def divide(a: float, b: float) -> float:
"""Divides two numbers and returns the result.
args: a = float(a) - The First Number
b = float(b) - The Second Number
returns: float: the quotient of two numbers a and b.
"""
if b == 0:
raise ValueError("Cannot divide by zero")
return a / b
return {"result": result}
# Converting it to MCP uvicorn app
mcp = FastApiMCP(app, name="Calculator MCP")
mcp.mount_http()
if __name__ == "__main__":
import uvicorn
uvicorn.run(app, host="localhost", port=8001)
