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.
npx agentmods add skills/leionion/clawforge/mac_brightnessnpx skills add leionion/ClawForge --skill mac_brightnessgit clone --depth 1 https://github.com/leionion/ClawForgeWrote 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.
[](https://agentmods.dev/skills/leionion/clawforge/mac_brightness)<a href="https://agentmods.dev/skills/leionion/clawforge/mac_brightness"><img src="https://agentmods.dev/badge/skills/leionion/clawforge/mac_brightness.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00059 | $0.00286 |
| Opus 5 | $0.00030 | $0.00143 |
| Sonnet 5 | $0.00012 | $0.00057 |
| Haiku 4.5 | $0.00006 | $0.00029 |
Grade A, and why
mac-brightness scanned grade A with 1 finding 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 4d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
The script calls the `brightness` CLI tool via `subprocess.run(["brightness", level])`. If the tool is not installed, it prints an error prompting `brew install brightness`. What it actually says
mac-brightness — Screen Brightness Control
Adjusts Mac screen brightness using the brightness CLI tool (installed via Homebrew).
Prerequisites
brew install brightness
Usage
# Set brightness to 50%
python3 mac_brightness.py 0.5
# Set brightness to max
python3 mac_brightness.py 1.0
# Set brightness to minimum (not off)
python3 mac_brightness.py 0.1
The level argument accepts a float between 0 (off) and 1 (full brightness).
How it works
The script calls the brightness CLI tool via subprocess.run(["brightness", level]). If the tool is not installed, it prints an error prompting brew install brightness.
Error handling
- Missing tool: prints
❌ 请先安装: brew install brightness— install withbrew install brightness - Out of range: values outside 0–1 are rejected with a message
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 39 lines · 59 tokens per session scan A b386d6ee381e
mac-brightness is a skill published in the GitHub repository leionion/ClawForge (90 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 286 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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