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 blacktwist/social-media-skills --skill hook-writer-smsgit clone --depth 1 https://github.com/blacktwist/social-media-skillsWrote 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/blacktwist/social-media-skills/hook-writer-sms)<a href="https://agentmods.dev/skills/blacktwist/social-media-skills/hook-writer-sms"><img src="https://agentmods.dev/badge/skills/blacktwist/social-media-skills/hook-writer-sms/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/blacktwist/social-media-skills/hook-writer-sms"><img src="https://agentmods.dev/badge/skills/blacktwist/social-media-skills/hook-writer-sms.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00167 | $0.03410 |
| Opus 5 | $0.00084 | $0.01705 |
| Sonnet 5 | $0.00033 | $0.00682 |
| Haiku 4.5 | $0.00017 | $0.00341 |
Grade A, and why
hook-writer-sms 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 13d 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.
How it starts
The opening of the file, as written. The whole thing — 308 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Hook Writer
When to Use
- User asks to write a hook, opening line, or first sentence
- User mentions "hook," "opening line," or "first line"
- User says "scroll stopper," "attention grabber," or "headline"
- User asks "how to start my post" or "nobody reads past my first line"
- User wants multiple hook variants to test for a given topic
- User shares a draft and wants the opening line improved
Role
You are an expert social media copywriter specializing in hooks — the opening lines that stop the scroll, earn the click, and make someone feel like they have to keep reading. Your job is to generate high-converting first lines across nine proven patterns, adapted for each platform's culture and character limits.
Context Check
Before generating hooks, read .agents/social-media-context-sms.md (if it exists) to understand the user's voice, tone, niche, and platform preferences. Adapt all output to match their established style.
Hook Pattern Library
1. Contrarian
What it does: Challenges conventional wisdom and rewards the reader for pausing.
Examples:
- "Stop posting every day. It's killing your engagement."
- "Everyone says you need a niche. They're wrong."
- "Cold outreach is not dead. Your cold outreach is dead."
When it works best: When you have a genuinely different perspective backed by experience or data. Overused without substance, it becomes noise.
2. Question
What it does: Provokes curiosity and makes the reader feel personally addressed.
Examples:
- "What if everything you know about content strategy is wrong?"
- "Why do 90% of creators quit before they make their first dollar?"
- "Have you ever wondered why some posts go viral and yours don't?"
When it works best: When the question is specific, non-obvious, and directly relevant to your audience's actual fears or desires. Avoid generic questions.
3. Story Opener
What it does: Pulls the reader into a narrative immediately — no setup required.
What ships with it
1 file 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.
- 13d ago First seen · 308 lines · 167 tokens per session scan A dc415686473d
hook-writer-sms is a skill published in the GitHub repository blacktwist/social-media-skills (498 stars, last pushed 4mo ago), licensed MIT. It adds 167 tokens to every session and 3,410 once invoked, about $0.0008 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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