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 jeremylongworth-source/AgentSkills --skill caption-writergit clone --depth 1 https://github.com/jeremylongworth-source/AgentSkillsWrote 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/jeremylongworth-source/agentskills/caption-writer)<a href="https://agentmods.dev/skills/jeremylongworth-source/agentskills/caption-writer"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/caption-writer/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/jeremylongworth-source/agentskills/caption-writer"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/caption-writer.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 | $0.00055 | $0.00294 |
| Opus 5 | $0.00028 | $0.00147 |
| Sonnet 5 | $0.00011 | $0.00059 |
| Haiku 4.5 | $0.00006 | $0.00029 |
Grade A, and why
caption-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 8d 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
Caption Writer
Core Workflow
- Identify platform, audience, post format, creator voice, content asset, goal, and disclosure needs.
- Write concise caption variants with hook, context, value, CTA, and community prompt.
- Match caption length and style to platform and creator voice.
- Add sponsor, affiliate, AI, or material-connection disclosure placeholders when needed.
- Avoid unsupported claims, engagement bait, and copied phrasing.
- Provide variants for test, casual, educational, and conversion angles.
Safety Rules
- Do not hide sponsorships, affiliates, gifted products, or material connections.
- Do not fabricate testimonials, results, scarcity, or audience reactions.
- Verify current platform and disclosure rules when exact tactical guidance matters.
Deliverable Shape
For captions, provide:
- Platform and goal
- Caption variants
- CTA or community prompt
- Disclosure notes
- Hashtag or keyword notes when useful
- Risk and claim checks
References
- Read
references/caption-writer-checklist.mdwhen writing creator captions.
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.
- 8d ago First seen · 43 lines · 55 tokens per session scan A 670e790f1282
caption-writer is a skill published in the GitHub repository jeremylongworth-source/AgentSkills (1 stars, last pushed 6d ago), licensed MIT. It adds 55 tokens to every session and 294 once invoked, about $0.0003 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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