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 Chenruishuo/posterly --skill posterlygit clone --depth 1 https://github.com/Chenruishuo/posterlyWrote 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/chenruishuo/posterly/posterly)<a href="https://agentmods.dev/skills/chenruishuo/posterly/posterly"><img src="https://agentmods.dev/badge/skills/chenruishuo/posterly/posterly/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/chenruishuo/posterly/posterly"><img src="https://agentmods.dev/badge/skills/chenruishuo/posterly/posterly.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 | $0.00031 | $0.04109 |
| Opus 5.5 | $0.00012 | $0.01644 |
| Sonnet 5.5 | $0.00006 | $0.00822 |
| Haiku 4.5 | $0.00003 | $0.00411 |
Grade A, and why
posterly 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 29d 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
18 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.
- assets/mathjax/LICENSE 11 KB
- assets/mathjax/tex-svg.js 2059 KB runs code
- assets/mathjax/VERSION 14 B
- examples/hello_world/poster.html 15 KB
- references/assets.md 8.1 KB
- references/design-workflow.md 39 KB
- references/pitfalls.md 6.6 KB
- references/review.md 12 KB
- references/validation.md 42 KB
- references/visual-polish.md 45 KB
- templates/COMPONENTS.md 71 KB
- templates/DESIGN-AXES.md 22 KB
- templates/landscape_4col_neutral.html 57 KB
- templates/landscape_hero_neutral.html 58 KB
- templates/portrait_2col_neutral.html 54 KB
- templates/README.md 5.2 KB
- templates/THEMES.md 13 KB
- templates/WRITING.md 9.5 KB
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.
- 29d ago Changed e3f8c2ce2944
- 1mo ago Changed · -579 lines · -44 tokens per session 5cf53472bb4e
- 1mo ago First seen · 754 lines · 75 tokens per session scan A 6152c916d8d5
posterly is a skill published in the GitHub repository Chenruishuo/posterly (425 stars, last pushed yesterday), licensed AGPL-3.0. It adds 31 tokens to every session and 4,109 once invoked, about $0.0001 per session on Opus 5.5. 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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