New: 97,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Checking Markdown Links

by agntcy in agntcy/coffeeAgntcy

Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds.

Apache-2.0Auto-check passedDocuments & Office

Install Checking Markdown Links

skills CLI
$ npx skills add agntcy/coffeeAgntcy --skill checking-markdown-links -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install agntcy/coffeeAgntcy checking-markdown-links --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/agntcy/coffeeAgntcy.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/quality-checks/checking-markdown-links .claude/skills/checking-markdown-links && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
checking-markdown-links
GitHub stars
112
Token cost
~660 tokens
SKILL.md length
224 words
Files
1
Skills in repo
16
Repo updated
First seen
Licence
Apache-2.0

At a glance

Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds.

  • Tasks that involve Markdown
  • SKILL.md covers What this skill does, Workflow and Notes
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Checking Markdown Links is an agent skill from agntcy/coffeeAgntcy. Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds. Use after moving, renaming, or removing a file, or before finishing any change that edits a markdown link.

Its SKILL.md is about 660 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Documents & Office, covering Markdown. The repository describes itself as: End-to-end reference application for AGNTCY Components. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Markdown

Example prompts

  • “/checking-markdown-links”

What it can do on your machine

Read from SKILL.md and the folder at commit 36f1923. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Checking Markdown Links loads about 660 tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 224 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~65
When it runs · the whole SKILL.md, loaded when a task matches
~660

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from agntcy/coffeeAgntcy at commit 36f1923, republished under its Apache-2.0 licence (© agntcy). 224 words, ~660 tokens.

Download SKILL.mdSave it as .claude/skills/checking-markdown-links/SKILL.md (or your agent's skills folder).
name
checking-markdown-links
description
Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds. Use after moving, renaming, or removing a file, or before finishing any change that edits a markdown link.

What this skill does

Runs task links:check (defined in Taskfile.yaml, wrapping scripts/checks/check_markdown_links.bash) to scan every git-tracked *.md file for a relative [text](<target>) link whose target doesn't resolve to an existing file. This is the same check task check:all runs as part of checks.yaml. See .agents/rules/quality/markdown-link-integrity.md for the underlying rule.

Workflow

- [ ] 1. Run: task links:check
- [ ] 2. For each flagged link, either fix the target path (the file
        moved or was renamed - find its new path) or fix the link text
        (the target was correct but the wrong file was linked)
- [ ] 3. If the target genuinely can't resolve to a real file on purpose
        (a placeholder in illustrative prose, a link to a file this same
        change creates later in a multi-step process), reword it so it
        doesn't look like a real link, or add a trailing
        `<!-- link-exempt: <reason> -->` comment stating why
- [ ] 4. Re-run task links:check to confirm it's clean

Notes

  • This only checks that the target file exists - it does not follow a #anchor to confirm a heading with that name actually exists in the target file.
  • A target starting with / is checked from the repo root (matching how GitHub itself renders a root-relative link); everything else is checked relative to the linking file's own directory - the same convention this repo's markdown already follows.
  • A link inside backtick-quoted prose illustrating markdown syntax itself (e.g. a sentence explaining what a cross-link should look like) is easy to mistake for a real link - a <...> placeholder segment in the target (e.g. path/<rule>.md) is skipped for exactly this reason; a link to an actual file never needs one.
  • After moving or renaming any file this repo's docs might reference, running this check is the fast way to confirm nothing was missed - faster than grepping for the old path by hand, and it catches links grep-based sweeps miss (a relative path that resolves to the wrong file after a move, not just an old filename).

© agntcy, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/quality-checks/checking-markdown-links of agntcy/coffeeAgntcy.

Open the folder on GitHubat commit 36f1923

Compare with similar skills

Checking Markdown Links next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Checking Markdown Links compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Checking Markdown Links this skillagntcy/coffeeAgntcy112—~660Automated safety check: PassApache-2.0
Markdown Article FormatterJimLiu/baoyu-skills26k6 repos~3.5kAutomated safety check: PassMIT
MarkitdownImCa0/just-laws78114 repos~3.2kAutomated safety check: NotesMIT
Obsidian MarkdownAtmosphere/atmosphere3.8k20 repos~1.3kAutomated safety check: PassApache-2.0
Gzh Designisjiamu/gzh-design-skill3.9k1 repos~2.2kAutomated safety check: PassAGPL-3.0
Crosspostingwasp-lang/wasp19k—~1.1kAutomated safety check: PassMIT

Similar skills

  • Markdown Article Formatter

    JimLiu/baoyu-skills

    Reformats plain text or Markdown articles with frontmatter, a title, a summary, headings, bold, lists and code blocks, and saves a separate formatted copy.

    26k GitHub starsUsed in 6 repos~3.5k tokens
    Documents & OfficeAuto-check passed

  • Markitdown

    ImCa0/just-laws

    Convert files and office documents to Markdown. An agent skill from ImCa0/just-laws.

    781 GitHub starsUsed in 14 repos~3.2k tokens
    Documents & OfficeAuto-check: notes

  • Obsidian Markdown

    Atmosphere/atmosphere

    Create and edit Obsidian Flavored Markdown with wikilinks, embeds, callouts, properties, and other Obsidian-specific syntax.

    3.8k GitHub starsUsed in 20 repos~1.3k tokens
    Documents & OfficeAuto-check passed

  • Gzh Design

    isjiamu/gzh-design-skill

    微信公众号文章排版引擎，将 Markdown 转换为可直接粘贴到公众号编辑器的 HTML。主题风格从 references/theme-index.md 注册的自定义主题库中选取，自动章节编号、关键词下划线标记、引言卡片、目录导航、代码块、图片/GIF、作者签名。支持 Markdown / Word(.docx) / PDF / 纯文本输入（非 Markdown…

    3.9k GitHub starsUsed in 1 repo~2.2k tokens
    Documents & OfficeAuto-check passed

  • Crossposting

    wasp-lang/wasp

    Crosspost Wasp blog articles (MDX) to DEV.to and Medium. An agent skill from wasp-lang/wasp.

    19k GitHub stars~1.1k tokensUpdated today
    Documents & OfficeAuto-check passed

  • Segment Docs

    JanDeDobbeleer/oh-my-posh

    Reference mapping between Oh My Posh Go segment source code and MDX documentation.

    24k GitHub stars~1.1k tokensUpdated today
    Documents & OfficeAuto-check passed

More from agntcy/coffeeAgntcy

All 16 skills in this repo

  • A2a Protocol

    agntcy/coffeeAgntcy

    A skill your agent uses when the user asks about A2A (Agent-to-Agent) protocol communication, OASF record formats, AGNTCY directory operations, agent card parsing, or dirctl CLI usage.

    112 GitHub stars~1k tokensUpdated yesterday
    Auto-check passed

  • Add Repo Operation

    agntcy/coffeeAgntcy

    Guides adding a new repository operation (a check, validation, or piece of tooling) through this repo's standard script - Taskfile task - skill - CI enforcement - rule pipeline.

    112 GitHub stars~1.1k tokensUpdated yesterday
    Auto-check passed

  • Agentic Workflows API Documentation Lungo

    agntcy/coffeeAgntcy

    Authors and maintains the human-facing Agentic Workflows API documentation for the lungo subproject at coffeeAGNTCY/coffeeagents/lungo/docs/workflow-instanceapi.md.

    112 GitHub stars~2.6k tokensUpdated yesterday
    Auto-check passed

  • Checking Pinned References

    agntcy/coffeeAgntcy

    Runs task pins:check to find any third-party GitHub Action, reusable-workflow, or image reference that isn't pinned to an immutable SHA/digest, and pins each one it finds.

    112 GitHub stars~578 tokensUpdated yesterday
    Auto-check passed

  • Checking Workflow Permissions

    agntcy/coffeeAgntcy

    Runs task workflows:check-permissions to find any GitHub Actions workflow file with a write-all grant or no declared permissions, and scopes it down to least privilege.

    112 GitHub stars~513 tokensUpdated yesterday
    Auto-check passed

  • Generate Release Notes

    agntcy/coffeeAgntcy

    Generates coffeeAgntcy CHANGELOG release notes and README Built With updates from PRs and dependency lockfiles since the previous release tag.

    112 GitHub stars~535 tokensUpdated yesterday
    Auto-check passed

Categories

Questions about Checking Markdown Links

What does Checking Markdown Links do?

Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds. Checking Markdown Links is an agent skill from agntcy/coffeeAgntcy. Runs task links:check to find any relative markdown link that doesn't resolve to a file that exists, and fixes each one it finds.

When should I use Checking Markdown Links?

Checking Markdown Links fits situations like: tasks that involve Markdown.

How do I install Checking Markdown Links in Claude Code?

Run `npx skills add agntcy/coffeeAgntcy --skill checking-markdown-links -a claude-code`. Or copy the skill folder (.agents/skills/quality-checks/checking-markdown-links in agntcy/coffeeAgntcy) into .claude/skills/checking-markdown-links in your project. Claude Code loads it when a task matches its description.

How do I install Checking Markdown Links in Codex?

Run `npx skills add agntcy/coffeeAgntcy --skill checking-markdown-links -a codex`. Or copy the skill folder (.agents/skills/quality-checks/checking-markdown-links in agntcy/coffeeAgntcy) into .agents/skills/checking-markdown-links in your project. Codex loads it when a task matches its description.

Can I use Checking Markdown Links in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add agntcy/coffeeAgntcy --skill checking-markdown-links -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/checking-markdown-links, .gemini/skills/checking-markdown-links, .github/skills/checking-markdown-links and .opencode/skills/checking-markdown-links in your project.

What does Checking Markdown Links need to run?

SKILL.md names no scripts, command-line tools or credentials: Checking Markdown Links is instructions for the agent only.

Does Checking Markdown Links access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Checking Markdown Links safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Checking Markdown Links use?

Checking Markdown Links is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Checking Markdown Links use?

About 660 tokens (SKILL.md is roughly 2.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Checking Markdown Links?

Skills that share tags, products or a category with Checking Markdown Links: Markdown Article Formatter (JimLiu/baoyu-skills, 26k stars), Markitdown (ImCa0/just-laws, 781 stars), Obsidian Markdown (Atmosphere/atmosphere, 3.8k stars) and Gzh Design (isjiamu/gzh-design-skill, 3.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Checking Markdown Links?

agntcy (a GitHub organization) maintains it in agntcy/coffeeAgntcy, which has 112 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 6, 2026.

Source: agntcy/coffeeAgntcy on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.