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 yegor256/critic --skill format-plain-textgit clone --depth 1 https://github.com/yegor256/criticWrote 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/yegor256/critic/format-plain-text)<a href="https://agentmods.dev/skills/yegor256/critic/format-plain-text"><img src="https://agentmods.dev/badge/skills/yegor256/critic/format-plain-text.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 | $0.00024 | $0.00295 |
| Opus 5 | $0.00012 | $0.00148 |
| Sonnet 5 | $0.00005 | $0.00059 |
| Haiku 4.5 | $0.00002 | $0.00030 |
Grade A, and why
format-plain-text 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
Lines
Start every sentence on new line.
Break any sentence over 80 characters across lines.
Split at commas, conjunctions, or clause boundaries.
Use 100 characters as margin for .tex files.
Indent every continuation line by two spaces.
Scope
Apply to Markdown body, TeX paragraphs, and .txt prose.
Apply to blockquotes and full-sentence list items too.
Skip
Skip fenced code and inline code. Skip frontmatter, tables, headings, and link references. Skip any line where hard break changes rendered output.
Reflow
Preserve layout when document already follows these rules. Reformat only sentences you touch when document does not follow them. Reflow whole document only when asked.
Output
Return input text with each sentence on its own line. Indent every continuation line two spaces. Preserve every word, punctuation mark, and code span unchanged.
Done
Confirm every sentence begins on its own line.
Confirm prose lines fit 80 characters, or 100 characters for .tex.
Confirm wording and character count match input.
Example
Reflow this input.
The committee approved the budget. Work starts on Monday.
Return this layout.
The committee approved the budget.
Work starts on Monday.
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.
- 6d ago First seen · 59 lines · 24 tokens per session scan A d4a9207fcc75
format-plain-text is a skill published in the GitHub repository yegor256/critic (4 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 295 once invoked, about $0.0001 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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