for assorted things
zzstoatzz.io
1#!/usr/bin/env -S uv run --script --quiet
2# /// script
3# requires-python = ">=3.12"
4# dependencies = ["marvin>=3.1.0"]
5# ///
6"""
7Make some change to my phillips hue network of lights via agent + MCP server.
8
9Usage:
10
11```bash
12./update-lights -m "turn on sahara in the living room and nightlight in the kitchen"
13```
14
15Details:
16- uses a [`marvin`](https://github.com/prefecthq/marvin) (built on [`pydantic-ai`](https://github.com/pydantic/pydantic-ai)) agent
17- the agent spins up a [`fastmcp`](https://github.com/jlowin/fastmcp) MCP server that talks to my [`phue`](https://github.com/studioimaginaire/phue) bridge
18- set `HUE_BRIDGE_IP` and `HUE_BRIDGE_USERNAME` in `.env` or otherwise in environment
19- uses `OPENAI_API_KEY` by default, but you can set `AI_MODEL` in `.env` or otherwise in environment to use a different model
20"""
21
22import marvin
23import argparse
24from pydantic_settings import BaseSettings, SettingsConfigDict
25from pydantic import Field
26from pydantic_ai.mcp import MCPServerStdio
27from pydantic_ai.models import KnownModelName
28from rich.console import Console
29from rich.panel import Panel
30from rich.prompt import Prompt
31
32
33class Settings(BaseSettings):
34 model_config = SettingsConfigDict(env_file=".env", extra="ignore")
35
36 hue_bridge_ip: str = Field(default=...)
37 hue_bridge_username: str = Field(default=...)
38
39 ai_model: KnownModelName = Field(default="gpt-4.1-mini")
40
41
42settings = Settings()
43console = Console()
44
45hub_mcp = MCPServerStdio(
46 command="uvx",
47 args=[
48 "smart-home@git+https://github.com/jlowin/fastmcp.git#subdirectory=examples/smart_home"
49 ],
50 env={
51 "HUE_BRIDGE_IP": settings.hue_bridge_ip,
52 "HUE_BRIDGE_USERNAME": settings.hue_bridge_username,
53 },
54)
55
56
57if __name__ == "__main__":
58 parser = argparse.ArgumentParser(description="Send a command to the Marvin agent.")
59 parser.add_argument(
60 "--message",
61 "-m",
62 type=str,
63 default="soft and dim - Jessica Pratt energy, all areas",
64 help="The message to send to the agent (defaults to 'soft and dim - Jessica Pratt energy, all areas').",
65 )
66 args = parser.parse_args()
67
68 agent = marvin.Agent(
69 model=settings.ai_model,
70 mcp_servers=[hub_mcp],
71 )
72
73 console.print(
74 Panel.fit(
75 f"[bold cyan]🏠 lights agent[/bold cyan]\n"
76 f"[dim]model: {settings.ai_model}[/dim]",
77 border_style="blue",
78 )
79 )
80
81 with marvin.Thread():
82 first = True
83 while True:
84 if first:
85 console.print(f"\n[bold yellow]→[/bold yellow] {args.message}")
86 agent.run(str(args.message))
87 first = False
88 else:
89 try:
90 user_input = Prompt.ask(
91 "\n[bold green]enter a message[/bold green]"
92 )
93 console.print(f"[bold yellow]→[/bold yellow] {user_input}")
94 agent.run(str(user_input))
95 except KeyboardInterrupt:
96 console.print("\n[dim red]exiting...[/dim red]")
97 break