contextlint-init

contextlint-init is a skill for Claude Code, Codex from nozomi-koborinai/contextlint. It costs 146 tokens per session (3,138 once invoked), scanned A, original, Apache-2.0.

A setup skill for adding contextlint to a repository. Contextlint checks Markdown and other project documents for consistency and broken references.

In plain words
What is it for?
It is for detecting the package manager, scanning the repository, and creating a sensible contextlint setup for documentation-heavy codebases.
Why use it?
It removes the need to choose configuration and rules manually when starting documentation checks in a project.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for detecting the package manager, scanning the repository, and creating a sensible contextlint setup for documentation-heavy codebases.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nozomi-koborinai/contextlint/contextlint-init
Install

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.

Any agent
npx skills add nozomi-koborinai/contextlint --skill contextlint-init
Clone the repo
git clone --depth 1 https://github.com/nozomi-koborinai/contextlint

Made for: Claude Code, Codex.

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 contextlint-init

README.md
[![agentmods](https://agentmods.dev/badge/skills/nozomi-koborinai/contextlint/contextlint-init/github.svg)](https://agentmods.dev/skills/nozomi-koborinai/contextlint/contextlint-init)
Your own site
<a href="https://agentmods.dev/skills/nozomi-koborinai/contextlint/contextlint-init"><img src="https://agentmods.dev/badge/skills/nozomi-koborinai/contextlint/contextlint-init/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 contextlint-init

Your own site · 80×15
<a href="https://agentmods.dev/skills/nozomi-koborinai/contextlint/contextlint-init"><img src="https://agentmods.dev/badge/skills/nozomi-koborinai/contextlint/contextlint-init.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,138 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 155
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 176
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 193
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 225
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 258
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
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 $0.00146 $0.03138
Opus 5 $0.00073 $0.01569
Sonnet 5 $0.00029 $0.00628
Haiku 4.5 $0.00015 $0.00314

Measured 12d ago against content hash 285bfa4b009f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

contextlint-init 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 12d 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.

skills/contextlint-init/SKILL.md · 267 lines

How it starts

The opening of the file, as written. The whole thing — 267 lines — stays where its author put it; the contents beside it link to each section on GitHub.

contextlint-init

Bootstrap contextlint into a repository. The goal: take the user from "no doc lint" to "contextlint running with a sensibly tuned config" without forcing them to read docs or hand-pick from 21 rules.

Language note: This skill is used across many languages. Respond to the user in their primary language (the one they're typing in). The English prompts and outputs below are reference templates — translate them to match the user's language at runtime.

When to use this skill

  • The user asks to "set up contextlint", "install contextlint", "init lint", "lint setup", "set up Markdown linting", "doc integrity check", or any equivalent phrasing
  • After cloning or starting a doc-heavy repo (specs, ADRs, requirements, design docs)
  • Even when the user doesn't name contextlint explicitly — they want the outcome, not the brand name

Triggering phrasings appear across many languages. A few illustrative samples (not exhaustive):

  • English: "set up contextlint", "init markdown lint", "lint my docs"
  • Japanese: "contextlint 入れて", "lint 環境整えて", "ドキュメントの整合性チェック導入したい"
  • Chinese: "设置 contextlint", "添加 markdown 检查"
  • Korean: "contextlint 설정해줘", "마크다운 린트 추가해"

Why this skill exists

contextlint has 21 rules across 7 categories. Asking the user to read each one and pick is a non-starter — they will close the page. This skill closes that gap by inspecting the actual repo and proposing a config tailored to the doc style. The user only confirms or refines.

Steps

1. Detect existing contextlint

Look for contextlint.config.json at the repo root or any parent directory.

  • If found, stop and ask the user (in their language):
    • (overwrite) Re-init from scratch
    • (add) Keep existing config, propose new rules to add based on a fresh doc scan
    • (skip) Do nothing
  • If not found, continue.

Why ask? Silently re-initializing destroys a tuned config; silently adding rules can trip CI for collaborators. The user owns their config — present options, don't decide for them.

Read the full file on GitHub · 267 lines

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. 12d ago First seen · 267 lines · 146 tokens per session scan A 285bfa4b009f

Subscribe to this mod's changes

contextlint-init is a skill published in the GitHub repository nozomi-koborinai/contextlint (42 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 146 tokens to every session and 3,138 once invoked, about $0.0007 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 2026-08-30.

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