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 a554b554/Reactant --skill proofreadgit clone --depth 1 https://github.com/a554b554/ReactantWrote 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/a554b554/reactant/proofread)<a href="https://agentmods.dev/skills/a554b554/reactant/proofread"><img src="https://agentmods.dev/badge/skills/a554b554/reactant/proofread/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/a554b554/reactant/proofread"><img src="https://agentmods.dev/badge/skills/a554b554/reactant/proofread.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 | $0.00039 | $0.00537 |
| Opus 5.5 | $0.00016 | $0.00215 |
| Sonnet 5.5 | $0.00008 | $0.00107 |
| Haiku 4.5 | $0.00004 | $0.00054 |
Grade A, and why
proofread 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 1mo 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 — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Proofread
Activation Boundary
This is a tag-only worker skill. Use it only after execute or execute-one
selects an exact <@proofread...> annotation in a target document and hands
off its context. Never activate it from an ordinary chat-window request,
semantic similarity, or any skill other than those two routers. Without that
router handoff, do not change the document; tell the user to add the tag and run
one of the routers.
Fix grammar, spelling, and punctuation in the surrounding block, then consume the tag.
Tag
<@proofread>
<@proofread: optional narrower instruction>
Example: <@proofread: only fix punctuation>.
Input
- File path — the document being processed.
- Surrounding block — the maximal run of non-blank lines containing the tag; blank lines bound it.
- Prompt (optional) — narrows the scope. Default: fix all mechanical errors.
Workflow
- Read the surrounding block; read the full file if broader context helps (for example, to recognize intentional terminology).
- Fix grammar, spelling, and punctuation errors only.
- Write the result back: replace the surrounding block (including the
<@proofread>tag) with the corrected text.
Scope Modifiers
- Protect
<< >>— must NOT be modified even if it contains errors. Preserve the content exactly; remove the delimiters in the output. - Field
(( ))— ONLY text inside may be corrected. Remove the delimiters in the output.
Context References
Double-backtick references in the prompt point to resources to consult (for example a glossary of domain terms that must not be "corrected"). Resolve paths relative to the document's directory unless absolute. Remove the delimiters from the output.
Rules
- Do not change meaning, tone, or style; fix errors only, never rewrite.
- Consume this tag and its consumed modifier delimiters. Preserve every
unrelated tag,
<@comment: ...>tag,<@chat-model>block, and escaped literal byte-for-byte. - On any error (for example an unreadable referenced file), fail cleanly: leave the tag, change nothing, report.
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.
- 1mo ago Changed · +21 lines · +26 tokens per session a93a71af38b6
- 1mo ago First seen · 46 lines · 13 tokens per session scan A 130bfb43b9b2
proofread is a skill published in the GitHub repository a554b554/Reactant (54 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 537 once invoked, about $0.0002 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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