light-control

light-control is a skill for Claude Code, Codex from jui-hung-yuan/smarthome-mcp-lab. It costs 39 tokens per session (516 once invoked), scanned A, original, MIT.

A control skill for the TAPO L530E smart light bulb. It can send commands to the bulb or run in mock mode without hardware.

In plain words
What is it for?
Turning the bulb on or off, changing brightness, setting a color temperature, choosing a named color, viewing the color palette, and reading status.
Why use it?
It removes the need to use the bulb’s separate app or remember device commands for routine changes. It also lets you check the bulb’s current status.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Turning the bulb on or off, changing brightness, setting a color temperature, choosing a named color, viewing the color palette, and reading status.

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Install with agentmods
npx agentmods add skills/jui-hung-yuan/smarthome-mcp-lab/light-control
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add jui-hung-yuan/smarthome-mcp-lab --skill light-control
Clone the repo
git clone --depth 1 https://github.com/jui-hung-yuan/smarthome-mcp-lab

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for light-control

README.md
[![agentmods](https://agentmods.dev/badge/skills/jui-hung-yuan/smarthome-mcp-lab/light-control/github.svg)](https://agentmods.dev/skills/jui-hung-yuan/smarthome-mcp-lab/light-control)
Your own site
<a href="https://agentmods.dev/skills/jui-hung-yuan/smarthome-mcp-lab/light-control"><img src="https://agentmods.dev/badge/skills/jui-hung-yuan/smarthome-mcp-lab/light-control/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for light-control

Your own site · 80×15
<a href="https://agentmods.dev/skills/jui-hung-yuan/smarthome-mcp-lab/light-control"><img src="https://agentmods.dev/badge/skills/jui-hung-yuan/smarthome-mcp-lab/light-control.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 516 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00516
Opus 5 $0.00019 $0.00258
Sonnet 5 $0.00008 $0.00103
Haiku 4.5 $0.00004 $0.00052

Measured 11d ago against content hash 7d3fb16cf834, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

light-control scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

src/smarthome/agent/skills/light-control/SKILL.md · 51 lines

What it actually says

Light Control

Controls the TAPO L530E bulb via smarthome.devices.bulb_cli. All commands output JSON.

Set TAPO_MOCK=1 to run without hardware.

Commands

# Turn on / off
uv run python -m smarthome.devices.bulb_cli turn_on
uv run python -m smarthome.devices.bulb_cli turn_off

# Brightness (1–100)
uv run python -m smarthome.devices.bulb_cli set_brightness '{"brightness": 50}'

# Color temperature in Kelvin (2500–6500)
uv run python -m smarthome.devices.bulb_cli set_color_temp '{"color_temp": 3000}'

# Named color (e.g. Lime, BlueViolet, Candlelight, AliceBlue)
uv run python -m smarthome.devices.bulb_cli set_color '{"color_name": "Candlelight"}'

# Show color palette (also sends a Slack dropdown in Slack sessions)
uv run python -m smarthome.devices.bulb_cli show_palette

# Current status
uv run python -m smarthome.devices.bulb_cli get_status

Notes

  • Brightness 1–30: dim / relaxed mood
  • Brightness 70–100: bright / task lighting
  • Color temp 2500–3000 K: warm white (evening / movie)
  • Color temp 5000–6500 K: cool daylight (focus / morning)
  • set_color and set_color_temp are mutually exclusive; using one clears the other

Color Palette UX

When the user asks to change the bulb color or asks "what colors are available":

  1. Run show_palette — it returns a formatted text list for you to relay, and automatically provides click buttons in Slack. Do not type the list manually.
  2. Wait for the user to reply with a number or name.
  3. Run set_color with the corresponding name.

If the user asks to add, remove, or replace a color in the palette, use memory_write to update the ## Light Color Palette section in USER.md. Table format: | # | Name | Emoji | Mood |

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 51 lines · 39 tokens per session scan A 7d3fb16cf834

Subscribe to this mod's changes

light-control is a skill published in the GitHub repository jui-hung-yuan/smarthome-mcp-lab (0 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 516 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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