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 skills add leionion/ClawForge --skill mac_mailgit 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_mail)<a href="https://agentmods.dev/skills/leionion/clawforge/mac_mail"><img src="https://agentmods.dev/badge/skills/leionion/clawforge/mac_mail/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.
<a href="https://agentmods.dev/skills/leionion/clawforge/mac_mail"><img src="https://agentmods.dev/badge/skills/leionion/clawforge/mac_mail.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00047 | $0.00131 |
| Opus 5.5 | $0.00019 | $0.00052 |
| Sonnet 5.5 | $0.00009 | $0.00026 |
| Haiku 4.5 | $0.00005 | $0.00013 |
Grade A, and why
mac-mail 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 1mo 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.
Runs `open -a Mail` via `subprocess.run`, which launches Mail.app or brings it to the foreground if already running. What it actually says
mac-mail — Open Mail Application
Opens the macOS built-in Mail application.
Usage
python3 mac_mail.py
How it works
Runs open -a Mail via subprocess.run, which launches Mail.app or brings it to the foreground if already running.
Example output
✅ 已打开Mail
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.
- 1mo ago First seen · 25 lines · 47 tokens per session scan A 064113452730
mac-mail is a skill published in the GitHub repository leionion/ClawForge (89 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 47 tokens to every session and 131 once invoked, about $0.0002 per session on Opus 5.5. 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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