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 rules/theharuspex/macos-mcp/macos-outgoinggit clone --depth 1 https://github.com/theHaruspex/macos-mcpWrote 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/rules/theharuspex/macos-mcp/macos-outgoing)<a href="https://agentmods.dev/rules/theharuspex/macos-mcp/macos-outgoing"><img src="https://agentmods.dev/badge/rules/theharuspex/macos-mcp/macos-outgoing.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 | $0.00148 | $0.00148 |
| Opus 5 | $0.00074 | $0.00074 |
| Sonnet 5 | $0.00030 | $0.00030 |
| Haiku 4.5 | $0.00015 | $0.00015 |
Grade A, and why
macos-outgoing 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 3d 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.
What it actually says
macos-mcp
Mail (write)
- Use
mail_draft_emailormail_draft_replyonly. Never send. User reviews in Mail.app.
Typography (outgoing mail)
- No em dash, en dash, or spaced hyphen as punctuation in subject/body.
- Sanitizer must preserve newlines (never
\s{2,}on full body).
Signatures
- Set
sender; signature fromsignatures/manifest.json. - No
--before signature block.
General
- All tools are local macOS only. No cloud email APIs.
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.
- 3d ago First seen · 25 lines · 148 tokens per session scan A 981817c5f7e4
macos-outgoing is a cursor rule published in the GitHub repository theHaruspex/macos-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 148 tokens to every session, about $0.0007 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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