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 agentmods add skills/jayrha/agentskills/proofreadernpx skills add JayRHa/AgentSkills --skill proofreadergit clone --depth 1 https://github.com/JayRHa/AgentSkillsWhat 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 | $0.00123 | $0.01358 |
| Opus 5 | $0.00062 | $0.00679 |
| Sonnet 5 | $0.00025 | $0.00272 |
| Haiku 4.5 | $0.00012 | $0.00136 |
Grade A, and why
proofreader 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 yesterday.
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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Proofreader
Overview
This skill performs careful proofreading and copyediting of prose. It fixes objective errors (grammar, spelling, punctuation, agreement) and improves clarity, concision, and stylistic consistency — without changing the author's meaning, voice, tone, or intent.
Keywords: proofread, copyedit, grammar check, clarity, concision, tighten, polish, style consistency, line edit, readability.
Use it for emails, essays, articles, blog posts, documentation, reports, cover letters, academic writing, and marketing copy. Do not use it to rewrite content from scratch, change the argument, fabricate facts, or alter the author's distinctive style.
The Cardinal Rule
Preserve meaning. Every edit must keep the author's intended message intact. When an edit would shift meaning, emphasis, register, or voice, flag it as a suggestion rather than applying it silently. If a sentence is ambiguous, do not guess — ask or annotate both readings.
Workflow
Follow these steps in order. Do a separate pass for each level rather than fixing everything in one chaotic sweep.
-
Clarify scope. Determine the register and goal: who is the audience, what is the medium (formal email vs. casual blog), and which English variant applies (US/UK/AU/CA). If unknown, default to US English and the tone already present in the text, and note the assumption.
-
Pass 1 — Correctness. Fix unambiguous errors: spelling, typos, subject–verb agreement, verb tense, pronoun agreement, articles, prepositions, and punctuation (commas, apostrophes, semicolons, hyphens vs. en/em dashes). These are non-negotiable and applied directly. See
references/grammar-rules.md. -
Pass 2 — Clarity. Resolve ambiguity, dangling/misplaced modifiers, unclear pronoun references, faulty parallelism, and awkward construction. Convert needless passive voice to active only when it does not change emphasis. Break up overlong run-on sentences.
-
Pass 3 — Concision. Cut redundancies, filler, and wordy phrases without losing nuance. Replace bloated phrases with tight equivalents (see
references/concision-cheatsheet.md). Never cut so aggressively that meaning or politeness is lost.
What ships with it
6 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.
- yesterday First seen · 81 lines · 123 tokens per session scan A e5b90c86b773
proofreader is a skill published in the GitHub repository JayRHa/AgentSkills (4 stars, last pushed 1mo ago), licensed MIT. It adds 123 tokens to every session and 1,358 once invoked, about $0.0006 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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