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/hamzafarooq/claude-code-starter/email-writernpx skills add hamzafarooq/claude-code-starter --skill email-writergit clone --depth 1 https://github.com/hamzafarooq/claude-code-starterWrote 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/hamzafarooq/claude-code-starter/email-writer)<a href="https://agentmods.dev/skills/hamzafarooq/claude-code-starter/email-writer"><img src="https://agentmods.dev/badge/skills/hamzafarooq/claude-code-starter/email-writer.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 5.1 | $0.00042 | $0.00278 |
| Opus 5 | $0.00021 | $0.00139 |
| Sonnet 5 | $0.00008 | $0.00056 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
email-writer 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 6d 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
Ask the user:
- "What type of email? (launch / follow-up / re-engagement / cold outreach / other)"
- "Who is the recipient and what do you want them to do after reading?"
- "Any context about your relationship with them or what they already know?"
Then write the email:
Subject line: [3 options — one curiosity-driven, one direct, one benefit-led]
Email body:
[Opening line that earns the read — specific, not generic]
[2–3 short paragraphs. Each one should advance the reader toward the CTA.]
[One clear CTA — a single link, reply request, or next step. Never two CTAs.]
[Sign-off appropriate to the relationship]
Notes on this email:
- What's working: [2 things]
- What to watch: [1 risk — e.g. "the opening assumes they remember you, which may not be true"]
Subject line recommendation: [Which of the 3 to use and why]
Ask: "Want a follow-up version in case they don't reply, or a shorter version for mobile?"
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.
- 6d ago First seen · 38 lines · 42 tokens per session scan A 0441b8a2ca11
email-writer is a skill published in the GitHub repository hamzafarooq/claude-code-starter (141 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 278 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 2026-08-30.
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