style-check

style-check is a skill for Claude Code from animalzinc/claude-plugins. It costs 131 tokens per session (1,781 once invoked), scanned A, original, MIT.

A brand-style checker that reviews one article against one editorial guide and reports each violation with the exact text, the relevant rule, and a suggested fix.

In plain words
What is it for?
Use it to review a draft for brand-style violations and, optionally, to fact-check it without changing the article.
Why use it?
It separates checks that software can perform from judgments about wording, structure, voice, and proofreading, while verifying that reported quotes really appear in the article.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the blog-style-guide-creator plugin — 4 skills, 2 commands, 11 agents shipped together

Good fit Use it to review a draft for brand-style violations and, optionally, to fact-check it without changing the article.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add animalzinc/claude-plugins
Claude Code
/plugin install blog-style-guide-creator

Made for: Claude Code.

Or install blog-style-guide-creator, the plugin that ships this one along with the rest of its 4 skills, 2 commands, 11 agents.

Wrote 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.

agentmods badge for style-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/animalzinc/claude-plugins/style-check/github.svg)](https://agentmods.dev/skills/animalzinc/claude-plugins/style-check)
Your own site
<a href="https://agentmods.dev/skills/animalzinc/claude-plugins/style-check"><img src="https://agentmods.dev/badge/skills/animalzinc/claude-plugins/style-check/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.

agentmods 80×15 button for style-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/animalzinc/claude-plugins/style-check"><img src="https://agentmods.dev/badge/skills/animalzinc/claude-plugins/style-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,781 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00131 $0.01781
Opus 5.5 $0.00052 $0.00712
Sonnet 5.5 $0.00026 $0.00356
Haiku 4.5 $0.00013 $0.00178

Measured 2d ago against content hash e6db2773fd9e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

style-check 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 2d 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.

plugins/blog-style-guide-creator/skills/style-check/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Style check

Checks one article against one brand's guide. Code settles what a pattern can settle; agents judge the rest; a second agent verifies every judgment; code drops any finding whose quote is not in the article. The report goes next to the article, so the user can open it, and nothing in the article changes unless the user asks.

Arguments: $ARGUMENTS

Commands

Every sgc step below is python3 "${CLAUDE_PLUGIN_ROOT}/scripts/sgc.py" <command> ...; write the command out in full each time, because the plugin path is substituted in this text and is not set in the shell. Run each command as its own Bash call, never chained with ;, &&, or a pipe, so it matches the skill's permission for sgc; read and list files with the Read and Glob tools. On Windows use py -3 in place of python3. If neither runs Python 3.9 or later, stop and tell the user the plugin needs Python 3.9+ from python.org.

sgc prints JSON. A non-zero exit prints the reason on stderr: show it to the user and stop, unless a step below says how to recover.

Steps

1. Resolve the guide

Read <brand> and the article path from the arguments, plus these flags:

Flag Meaning Default
--type T Content type, one of the guide's content_types The article's frontmatter content_type or type
--draft human|ai Who wrote the draft; rules marked ai-drafting are suggestions on a human draft human
--facts Also fact-check claims and links Off
--apply Offer fixes after the report Off
--guide F Use this guide file instead of the brand folder's None

The plugin's guides folder setting reads: ${user_config.guides_dir}. Run sgc brand-path <brand> --project-dir "${CLAUDE_PROJECT_DIR}", adding --guides-dir "<path>" only when that setting is an absolute path (an unset setting shows as text starting with ${, which must never reach the shell), and --guide F when given. From its JSON:

  • guide_exists false: stop and offer build-style-guide <brand>.
  • schema_version 1: continue (the tools read v1 guides), and add one line to the summary recommending build-style-guide <brand> --upgrade.
  • Keep guide and brand_dir for the steps below.

Read the full file on GitHub · 90 lines

Files

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.

Changes

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.

  1. 2d ago First seen · 90 lines · 131 tokens per session scan A e6db2773fd9e

Subscribe to this mod's changes

style-check is a skill published in the GitHub repository animalzinc/claude-plugins (15 stars, last pushed 2d ago), licensed MIT. It adds 131 tokens to every session and 1,781 once invoked, about $0.0005 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 2026-11-11.

Related

style-check compared with skills from other repositories

style-check next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
style-checkanimalzinc/claude-pluginsSkill152d agoMITA131Claude Code
cf-style-guideteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA178Claude Code
cf-briefteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA169Claude Code
cf-helpteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA149Claude Code
cf-publishteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA168Claude Code
cf-templateteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA160Claude Code
cf-variantsteachskillofskills-ai/ContentForge-techshuSkill12mo agoMITA162Claude Code