intpot

Write once, serve as CLI, API, or MCP. Plus convert between all three.

intpot bridges three popular Python frameworks:

• Typer — CLI applications
• FastMCP — Model Context Protocol servers
• FastAPI — REST API applications

Define your tools once with @app.tool() and serve them as any framework — or convert existing code between all three.

Features

• Write once, serve everywhere — intpot.App lets you define tools once and serve as CLI, API, or MCP with a single command
• 6 conversion directions — CLI to MCP, CLI to API, MCP to CLI, MCP to API, API to CLI, API to MCP
• Eject to standalone code — intpot eject exports your universal app as standalone Typer, FastAPI, or FastMCP code
• Python API — intpot.load() accepts file paths or live app instances for programmatic conversion
• Directory auto-discovery — scan an entire directory and convert all found apps at once
• Auto-detection — automatically identifies the source framework by analyzing imports and patterns
• HTTP method preservation — API routes keep their GET/POST/PUT/DELETE methods through conversion
• Project scaffolding — intpot init creates new CLI, MCP, or API projects from templates
• Jinja2 templates — clean, readable generated code with proper type hints
• Fully typed — PEP 561 compatible with py.typed marker
• AI agent skills — intpot add skills installs skills/rules for Claude Code, Cursor, Windsurf, Copilot, Cline, and Codex
• Zero config — just point at a Python file and specify the target

Installation

pip install intpot            # core (CLI conversions only)
pip install intpot[mcp]       # + FastMCP support
pip install intpot[api]       # + FastAPI support
pip install intpot[all]       # everything

Quick Start

Write once, serve everywhere

Define your tools once, serve as CLI, API, or MCP:

from intpot import App

app = App("my-app")

@app.tool()
def add(a: int, b: int) -> int:
    """Add two numbers together."""
    return a + b

@app.tool()
def greet(name: str, greeting: str = "Hello") -> str:
    """Greet someone by name."""
    return f"{greeting}, {name}!"

Then serve in any mode:

intpot serve app.py --cli          # Run as Typer CLI
intpot serve app.py --api          # Run as FastAPI on port 8000
intpot serve app.py --mcp          # Run as MCP server for AI agents

Or eject to standalone framework code:

intpot eject app.py --to api       # Export as standalone FastAPI app
intpot eject app.py --to cli       # Export as standalone Typer CLI
intpot eject app.py --to mcp       # Export as standalone FastMCP server

Scaffold a new project

intpot init my-server --type mcp
intpot init my-app --type cli
intpot init my-api --type api

Convert between frameworks

# MCP server -> Typer CLI
intpot to cli server.py

# CLI app -> FastMCP server
intpot to mcp app.py

# CLI app -> FastAPI app
intpot to api app.py

# Write output to a file
intpot to cli server.py --output cli_app.py

# Convert all apps in a directory
intpot to cli ./myproject/
intpot to mcp ./myproject/ --output ./converted/

Install AI agent skills

# Auto-detect agents in your project
intpot add skills

# Target a specific agent
intpot add skills --agent claude
intpot add skills --agent cursor
intpot add skills --agent windsurf
intpot add skills --agent copilot
intpot add skills --agent cline
intpot add skills --agent codex

# Specify a project directory
intpot add skills --path ./myproject/

Python API

Universal App (write once, serve everywhere)

from intpot import App

app = App("my-app")

@app.tool()
def greet(name: str, greeting: str = "Hello") -> str:
    """Greet someone."""
    return f"{greeting}, {name}!"

# Serve as any framework
app.serve(mode="cli")                         # Run as Typer CLI
app.serve(mode="api", host="0.0.0.0", port=8000)  # Run as FastAPI
app.serve(mode="mcp")                         # Run as MCP server

# Eject to standalone code
cli_code = app.eject("cli")                   # Returns Typer code string
api_code = app.eject("api")                   # Returns FastAPI code string

# Access normalized tool definitions
for tool in app.tools:
    print(tool.name, tool.parameters)

Conversion API (convert existing framework code)

import intpot

# From a file
app = intpot.load("mcp_server.py")
cli_code = app.to_cli()
api_code = app.to_api()

# From a live instance
from fastmcp import FastMCP

mcp = FastMCP("my-server")

@mcp.tool()
def greet(name: str) -> str:
    return f"Hello, {name}!"

app = intpot.load(mcp)
print(app.to_cli())

# Write directly to a file
app.write("output/cli_app.py", "cli")
app.write("output/api_app.py", "api")

App (universal runtime):

• .tool() — decorator to register functions as tools
• .serve(mode, host, port) — serve as CLI, API, or MCP
• .eject(target) — generate standalone framework code
• .tools — list of normalized ToolInfo objects

IntpotApp (conversion wrapper, returned by intpot.load()):

• .to_cli(), .to_mcp(), .to_api() — return generated code as strings
• .write(path, target) — generate and write to a file in one step
• .tools — list of normalized ToolInfo objects
• .source_type — detected framework type

Architecture

intpot uses a three-stage pipeline:

                    +-----------+
                    |  SOURCE   |
                    | (.py file)|
                    +-----+-----+
                          |
                    1. DETECT
                    (identify framework)
                          |
                    +-----v-----+
                    | SourceType|
                    | cli/mcp/api|
                    +-----+-----+
                          |
                    2. INSPECT
                    (extract functions)
                          |
                    +-----v-----+
                    | ToolInfo[] |
                    | (normalized|
                    |  schema)  |
                    +-----+-----+
                          |
                    3. GENERATE
                    (render template)
                          |
                    +-----v-----+
                    |  OUTPUT   |
                    | (.py code)|
                    +-----------+

1. DETECT — core/detector.py imports the source file and identifies whether it's a Typer app, FastMCP server, or FastAPI app
2. INSPECT — Framework-specific inspectors (core/inspectors/) extract function signatures, parameters, types, defaults, and docstrings into a normalized ToolInfo schema
3. GENERATE — Framework-specific generators (core/generators/) render the normalized schema into target code using Jinja2 templates

Examples

MCP server to CLI app

Input (mcp_server.py):

from fastmcp import FastMCP

mcp = FastMCP("example-server")

@mcp.tool()
def greet(name: str, greeting: str = "Hello") -> str:
    """Greet someone by name."""
    return f"{greeting}, {name}!"

Command: intpot to cli mcp_server.py

Output:

import typer

app = typer.Typer()

@app.command()
def greet(
    name: str = typer.Argument(..., help=""),
    greeting: str = typer.Option('Hello', help=""),
) -> None:
    """Greet someone by name."""
    # TODO: implement
    typer.echo("greet called")

CLI app to FastAPI

Input (cli_app.py):

import typer

app = typer.Typer()

@app.command()
def add(
    a: int = typer.Argument(..., help="First number"),
    b: int = typer.Argument(..., help="Second number"),
) -> None:
    """Add two numbers together."""
    typer.echo(a + b)

Command: intpot to api cli_app.py

Output:

from fastapi import FastAPI
from pydantic import BaseModel, Field

app = FastAPI()

class AddRequest(BaseModel):
    a: int = Field(..., description="First number")
    b: int = Field(..., description="Second number")

@app.post("/add")
def add(request: AddRequest) -> dict:
    """Add two numbers together."""
    # TODO: implement
    return {"result": "add called"}

API app to MCP server

Input (api_app.py):

from fastapi import FastAPI

app = FastAPI()

@app.post("/greet")
def greet(name: str, greeting: str = "Hello") -> dict:
    """Greet someone by name."""
    return {"message": f"{greeting}, {name}!"}

Command: intpot to mcp api_app.py

Output:

from fastmcp import FastMCP

mcp = FastMCP("generated-server")

@mcp.tool()
def greet(
    name: str,
    greeting: str = 'Hello',
) -> dict:
    """Greet someone by name."""
    # TODO: implement
    return "greet called"

See the examples/ directory for all conversion outputs, including advanced examples with import json, Body(...), Depends(), async tools, and more. Run bash scripts/demo.sh to regenerate them all.

CLI Reference

intpot serve

Serve an intpot App as CLI, API, or MCP server.

intpot serve <source> --cli|--api|--mcp [--host <host>] [--port <port>]

intpot eject

Export an intpot App as standalone framework code.

intpot eject <source> --to <cli|mcp|api> [--output <path>]

intpot init

Scaffold a new project from a template.

intpot init <name> --type <mcp|cli|api>

intpot to cli

Convert an MCP or API source file to a Typer CLI app.

intpot to cli <source> [--output <path>]

intpot to mcp

Convert a CLI or API source file to a FastMCP server.

intpot to mcp <source> [--output <path>]

intpot to api

Convert a CLI or MCP source file to a FastAPI app.

intpot to api <source> [--output <path>]

intpot add skills

Install intpot skills/rules for AI coding agents. Auto-detects which agents are configured in the project, or specify one explicitly.

intpot add skills [--agent <name>] [--path <dir>]

Supported agents and output locations:

Development

Requires uv.

git clone https://github.com/tugrulguner/intpot.git
cd intpot
uv sync --all-extras
uv run pre-commit install

Run the full check suite:

make check   # lint + typecheck + test

Individual targets:

make lint        # ruff check + format check
make typecheck   # pyright
make test        # pytest
make format      # auto-format code

See CONTRIBUTING.md for more details.

Roadmap

See ROADMAP.md for what's planned for v2 (full AST transform pipeline).

License

MIT