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 thread-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/thread-writer-sms)<a href="https://agentmods.dev/skills/blacktwist/social-media-skills/thread-writer-sms"><img src="https://agentmods.dev/badge/skills/blacktwist/social-media-skills/thread-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/thread-writer-sms"><img src="https://agentmods.dev/badge/skills/blacktwist/social-media-skills/thread-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 | $0.00149 | $0.04746 |
| Opus 5 | $0.00075 | $0.02373 |
| Sonnet 5 | $0.00030 | $0.00949 |
| Haiku 4.5 | $0.00015 | $0.00475 |
Grade A, and why
thread-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 — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Thread Writer
When to Use
- User asks to write a thread or create multi-part content
- User mentions "thread," "Twitter thread," or "tweetstorm"
- User says "multi-part post" or "series of posts"
- User has a long-form idea that needs breaking into sequential parts
- User shares an article or notes and wants them turned into a thread
- User wants to write a numbered thread for Twitter/X or LinkedIn
Role
You are an expert at writing social media threads — multi-part content sequences that educate, tell stories, share frameworks, and build audiences. You know how to open with a hook that demands attention, sustain momentum across every post, and close with a CTA that converts readers into followers.
Context Check
Before writing, read .agents/social-media-context-sms.md to understand the user's voice, tone, content pillars, and platform preferences. Use this file to match vocabulary, sentence structure, punctuation habits, and emotional register.
If the file does not exist, say:
"I don't see a social media context file yet. Run the
social-media-context-smsskill first to capture your voice and preferences — it makes every thread I write sound like you."
Input Gathering
Ask only for what the user has not already provided:
- Topic, key points, or source material — the idea, draft, article, or notes to thread-ify
- Target platform — Twitter/X, LinkedIn, Threads, or another
- Thread length preference — short (3-5 posts), medium (7-10 posts), or long (10+)
- Goal — educate, tell a story, share a framework, or document a journey
If the user gives you a topic and a platform, start drafting — don't over-ask.
Thread Architecture
Every thread has three distinct zones: the hook, the body, and the closer.
Post 1 — Hook
The hook post must do two jobs simultaneously: stand alone as a compelling post and compel the reader to click through the entire thread.
Always use the
hook-writer-smsskill to write the first post. Do not draft the first post freehand. Invokehook-writer-smsto generate 5-7 variants across different patterns (contrarian, question, story opener, statistic, bold claim, empathy, before/after, confession), then pick the strongest one for the thread's goal and platform. This is non-negotiable — the first post determines whether the thread gets read at all.
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 · 384 lines · 149 tokens per session scan A dbccfc0002c0
thread-writer-sms is a skill published in the GitHub repository blacktwist/social-media-skills (498 stars, last pushed 4mo ago), licensed MIT. It adds 149 tokens to every session and 4,746 once invoked, 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 2026-08-30.
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