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Agent skill

Skill Authoring

by authcrunch in authcrunch/authcrunch.github.io

Create, port, revise, or audit repo-local skills and their metadata, engineering contracts, and task routes.

No licenceAuto-check passedAgent Workflows

Install Skill Authoring

skills CLI
$ npx skills add authcrunch/authcrunch.github.io --skill skill-authoring -a claude-code

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

GitHub CLI
$ gh skill install authcrunch/authcrunch.github.io skill-authoring --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/authcrunch/authcrunch.github.io.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.codex/skills/skill-authoring .claude/skills/skill-authoring && 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
skill-authoring
GitHub stars
108
Used in
1 other repo
Token cost
~2.5k tokens
SKILL.md length
1,284 words
Files
5 (incl. references)
Skills in repo
7
Repo updated
First seen
Licence
None found

At a glance

Create, port, revise, or audit repo-local skills and their metadata, engineering contracts, and task routes.

  • Works in 10 steps: Read AGENTS.md and follow the routes… → Choose the narrowest existing file that… → Define the new skill's responsibility so… → …
  • Skill discovery
  • SKILL.md covers Inherit the default authoring…, Apply repository guidance, Build a routed skill hierarchy and Author project engineering…, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Skill Authoring is an agent skill from authcrunch/authcrunch.github.io. Create, port, revise, or audit repo-local skills and their metadata, engineering contracts, and task routes. Use for skill discovery, ownership, source grounding, and session-derived guidance; diagrams are optional.

Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `agents/openai.yaml`, `references/authcrunch-docs.md` and `references/diagram-contract.md`).

It sits in Agent Workflows, covering Skill authoring, Diagrams and Skill management. The repository describes itself as: Documentation for Caddy v2 Auth Portal and Authorize Plugins.

When your agent uses it

  • Skill discovery
  • Source grounding
  • Session-derived guidance
  • Diagrams are optional

Example prompts

  • “/skill-authoring”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Read AGENTS.md and follow the routes relevant to the task. Inventory the full catalog when adding/moving ownership or performing an…
  2. Choose the narrowest existing file that should route to the new or moved skill. Route directly from AGENTS.md only when no existing skill…
  3. Define the new skill's responsibility so it is cohesive, non-overlapping, and small enough to load independently.
  4. For a new skill, initialize it with the default $skill-creator workflow under .codex/skills//. Edit an existing skill in place.
  5. Write the project engineering contract. Use references only for detailed material that would otherwise bloat SKILL.md.
  6. Add a precise Use skill to ... statement to the selected routing file. Add no backlink solely to represent routing.
  7. Add further routes inside the new skill only when it delegates narrower work.
  8. Create or update agents/openai.yaml only when its interface changes; preserve existing invocation policy and dependencies. Run the default…
  9. For routing/ownership changes or a repository-wide audit, traverse all routes from AGENTS.md and repair broken targets, cycles, ambiguous…
  10. Report the new or changed routing chain using repository-relative paths.

What it can do on your machine

Read from SKILL.md and the folder at commit 40a7c96. 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 (its code samples are markdown).

    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

Skill Authoring loads about 2.5k tokens when it runs, and up to ~6.4k if it reads all its reference files. Until then it costs about 58 tokens; SKILL.md has 1,284 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~2.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~6.4k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 1,284 words (~2,456 tokens).

“Use the installed $skill-creator skill to apply the default authoring workflow. Read it completely and apply its initialization, naming, frontmatter, progressive-disclosure, metadata, validation, and testing guidance.”

— opening of SKILL.md by authcrunch
name
skill-authoring

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files (references) in .codex/skills/skill-authoring of authcrunch/authcrunch.github.io.

  • SKILL.md
  • agents/openai.yaml
  • references/authcrunch-docs.md
  • references/diagram-contract.md
  • references/hierarchy-contract.md

Open the folder on GitHubat commit 40a7c96

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in authcrunch/authcrunch.github.io, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Skill Authoring 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.

Skill Authoring compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Authoring this skillauthcrunch/authcrunch.github.io1081 repos~2.5kAutomated safety check: PassNone
Darwin Skill Optimizeralchaincyf/darwin-skill6.2k1 repos~4.7kAutomated safety check: PassMIT
Skill Creatorzhayujie/CowAgent47k—~4.7kAutomated safety check: NotesMIT
Open-Science Skill Creatoraipoch/open-science5.5k—~1.7kAutomated safety check: PassApache-2.0
Skill Quality ReviewerGalaxy-Dawn/claude-scholar5.7k1 repos~3kAutomated safety check: PassMIT
Prismer Skill CreatorPrismer-AI/PrismerCloud1.6k—~2.6kAutomated safety check: NotesMIT

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Categories

Questions about Skill Authoring

What does Skill Authoring do?

Create, port, revise, or audit repo-local skills and their metadata, engineering contracts, and task routes. io. Create, port, revise, or audit repo-local skills and their metadata, engineering contracts, and task routes.

When should I use Skill Authoring?

Skill Authoring fits situations like: skill discovery; source grounding; session-derived guidance; diagrams are optional.

How do I install Skill Authoring in Claude Code?

Run `npx skills add authcrunch/authcrunch.github.io --skill skill-authoring -a claude-code`. Or copy the skill folder (.codex/skills/skill-authoring in authcrunch/authcrunch.github.io) into .claude/skills/skill-authoring in your project. Claude Code loads it when a task matches its description.

How do I install Skill Authoring in Codex?

Run `npx skills add authcrunch/authcrunch.github.io --skill skill-authoring -a codex`. Or copy the skill folder (.codex/skills/skill-authoring in authcrunch/authcrunch.github.io) into .agents/skills/skill-authoring in your project. Codex loads it when a task matches its description.

Can I use Skill Authoring 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 authcrunch/authcrunch.github.io --skill skill-authoring -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-authoring, .gemini/skills/skill-authoring, .github/skills/skill-authoring and .opencode/skills/skill-authoring in your project.

What does Skill Authoring need to run?

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

Does Skill Authoring 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 Skill Authoring 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 Skill Authoring use?

No licence was found for Skill Authoring or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Skill Authoring use?

About 2.5k tokens (SKILL.md is roughly 9.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.9k tokens, read only when the agent opens those files.

What are the alternatives to Skill Authoring?

Skills that share tags, products or a category with Skill Authoring: Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars), Skill Creator (zhayujie/CowAgent, 47k stars), Open-Science Skill Creator (aipoch/open-science, 5.5k stars) and Skill Quality Reviewer (Galaxy-Dawn/claude-scholar, 5.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Authoring?

authcrunch (a GitHub organization) maintains it in authcrunch/authcrunch.github.io, which has 108 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 5, 2026.

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