Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
Build a project skill library in .claude/skills/ via discovery, parallel authoring, and review.
Install Skill Library Mission
$ npx skills add athola/claude-night-market --skill skill-library-mission -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install athola/claude-night-market skill-library-mission --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .claude/skills/skill-library-mission && rm -rf skills-srcUse ~/.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/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .claude/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-missionType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add athola/claude-night-market --skill skill-library-mission -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install athola/claude-night-market skill-library-mission --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .agents/skills/skill-library-mission && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .agents/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add athola/claude-night-market --skill skill-library-mission -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install athola/claude-night-market skill-library-mission --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .cursor/skills/skill-library-mission && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .cursor/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/athola/claude-night-market.git --path plugins/attune/skills/skill-library-mission--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add athola/claude-night-market --skill skill-library-mission -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install athola/claude-night-market skill-library-mission --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .gemini/skills/skill-library-mission && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .gemini/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install athola/claude-night-market skill-library-missionInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add athola/claude-night-market --skill skill-library-mission -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .github/skills/skill-library-mission && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .github/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add athola/claude-night-market --skill skill-library-mission -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install athola/claude-night-market skill-library-mission --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/athola/claude-night-market.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/attune/skills/skill-library-mission .opencode/skills/skill-library-mission && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "skill-library-mission" agent skill from https://github.com/athola/claude-night-market/tree/master/plugins/attune/skills/skill-library-mission into .opencode/skills/skill-library-mission/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-library-mission", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
skill-library-mission- GitHub stars
- 341
- Token cost
- ~1.6k tokens
- SKILL.md length
- 686 words
- Files
- 5 (incl. references)
- Skills in repo
- 152
- Repo updated
- First seen
- Licence
- MIT
At a glance
Build a project skill library in .claude/skills/ via discovery, parallel authoring, and review.
- Works in 3 steps: Discover → Author → Review
- Packaging tribal knowledge
- SKILL.md covers Overview, When To Use, When NOT To Use and Mission Shape, plus 6 more sections
- Calls rg
What it does
Skill Library Mission is an agent skill from athola/claude-night-market. Build a project skill library in .claude/skills/ via discovery, parallel authoring, and review. Use when packaging tribal knowledge. Do not use for one skill.
Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `modules/authoring-rules.md`, `modules/review-protocol.md` and `modules/taxonomy.md`).
It sits in Development. The repository describes itself as: 23 Claude Code plugins: TDD enforcement hooks, git/PR workflows, spec-driven development, code review, project lifecycle, fix-from-error, maintenance automation, context… The licence is MIT.
When your agent uses it
- Packaging tribal knowledge
Example prompts
- “/skill-library-mission”
Workflow steps
3 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 9f3eb00. 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
Shell commands in SKILL.md call:
rg
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 Library Mission loads about 1.6k tokens when it runs, and up to ~3.5k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 686 words of instructions outside code blocks.
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 athola/claude-night-market at commit 9f3eb00, republished under its MIT licence (© athola). 686 words, ~1,553 tokens.
Download SKILL.mdSave it as
.claude/skills/skill-library-mission/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- skill-library-mission
- description
- Build a project skill library in .claude/skills/ via discovery, parallel authoring, and review. Use when packaging tribal knowledge. Do not use for one skill.
- alwaysApply
- false
- category
- workflow-orchestration
- tags
- skill-library, knowledge-transfer, succession, mission, multi-agent
- dependencies
- attune:mission-orchestrator, abstract:skill-authoring, imbue:proof-of-work
- provides.workflow
- skill-library-authoring, knowledge-transfer, succession-planning
- usage_patterns
- repo-succession, onboarding-library, institutional-memory
- complexity
- advanced
- model_hint
- deep
- estimated_tokens
- 700
- progressive_loading
- true
Skill Library Mission
Overview
A retiring distinguished fellow's final task: package everything the
project knows into a skill library under .claude/skills/, so that
cheaper sessions and newer engineers can carry the project forward at
the same standard. This skill turns that one-off exercise into a
repeatable mission with three gated phases: discover, author, review.
The mission produced its first library in this repository on
2026-07-02 (15 skills, mission skill-library-2026-07-02). The
generalized dispatch prompt distilled from that run is preserved
verbatim in references/mission-prompt.md.
When To Use
- A repository has deep tribal knowledge and no
.claude/skills/library, and future sessions (human or model) must operate without the current expert. - An existing project library has drifted and needs a full re-discovery and re-review pass.
- Onboarding cost is high: the same questions get re-answered and the same dead ends get re-fought across sessions.
When NOT To Use
| Situation | Use instead |
|---|---|
| Authoring or improving one skill | Skill(abstract:skill-authoring) |
| Skills shipped inside a plugin | Skill(plugin-dev:skill-development) |
| Auditing existing skills only | Skill(abstract:skills-eval) |
| Full project lifecycle (code, not knowledge) | Skill(attune:mission-orchestrator) |
Mission Shape
Run as an attune mission with custom phases so the run survives interruption and records user directives:
{
"mission_id": "skill-library-YYYY-MM-DD",
"type": "custom",
"phases": ["discover", "author", "review", "report"],
"artifacts": { "library_root": ".claude/skills/" }
}Save this to .attune/mission-state.json, advance current_phase at
each gate, and record every user decision and override in
decisions / directive_overrides. A later session must be able to
resume from the state file alone.
Phase 1: Discover
No authoring happens in this phase. Investigate like an incoming principal engineer:
- README, manifest, contributor docs
- Build system and how tests actually run (not how docs claim)
- CI config and quality gates
- Git history: what changed, what got reverted, what stalled
- TODO/FIXME hotspots and issue-shaped artifacts
- Generated-data, deploy, and artifact conventions
- Any project memory available (discussions, ADRs, journals)
Then ask the user at most five questions, only for what the repo cannot tell you. The canonical five: the hardest live problem, unwritten discipline rules, the audience and what it lacks, the most expensive past failures, and what "beyond state of the art" means here. Fold the answers into every later phase.
Phase 2: Author
workflows/skill-library.js runs authoring and review as one
pipeline, so each skill's review starts when that skill is written
rather than when the slowest one is. It runs only when asked for, and
it returns review findings instead of applying them, because fixing
edits files that already exist. Without it, dispatch by hand:
Dispatch one authoring agent per skill, in parallel, following the
taxonomy in modules/taxonomy.md (adapt it: merge thin categories,
split deep ones, add domain categories). Aim for 10 to 16 skills.
Every agent prompt embeds the rules in modules/authoring-rules.md;
the non-negotiables are ground-truth-only claims, a "Provenance and
maintenance" section per skill, and a write fence limiting agents to
.claude/skills/.
Show full SKILL.md (238 more words)Show less
Phase 3: Review
After all skills exist, run the three-reviewer-plus-fixer protocol in
modules/review-protocol.md: factual, doctrine, and usability lenses
in parallel, then one fixer applying blocking and important findings.
Finish with the report: skill inventory with one-line descriptions,
what was spot-checked, and what remains uncertain.
Constraints
- Run discovery even on a small repository. The five questions come from it, and there is no other source for them.
- Verify against ground truth even in a codebase you know. A wrong runbook is worse than none.
- Review the library even when it looks complete. Authoring agents cannot see each other's contradictions.
- Date-stamp every claim and give it a re-verification command. A claim that is probably still true is a claim nobody checked.
Exit Criteria
-
.attune/mission-state.jsonexists with the custom phase list and reachesreportwith all prior phases completed. -
.claude/skills/contains 10 to 16 skill directories, each with a SKILL.md whose frontmatter hasnameand a trigger-richdescription. - Every skill ends with a "Provenance and maintenance" section containing one-line re-verification commands.
- All three review lenses ran and every blocking or important finding is either applied or skipped with a recorded reason.
- The final report lists the inventory, spot-check evidence, and remaining uncertainties.
Provenance and Maintenance
- Origin: mission
skill-library-2026-07-02in claude-night-market; generalized prompt captured 2026-07-03. - Verify the reference prompt still matches this skill's phases:
rg -c "Phase" plugins/attune/skills/skill-library-mission/references/mission-prompt.md - Verify the first library still exists where this skill claims:
ls .claude/skills/ | head -5
© athola, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files (references) in plugins/attune/skills/skill-library-mission of athola/claude-night-market.
- SKILL.md
- modules/authoring-rules.md
- modules/review-protocol.md
- modules/taxonomy.md
- references/mission-prompt.md
Open the folder on GitHubat commit 9f3eb00
Compare with similar skills
Skill Library Mission 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 | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Skill Library Mission this skillathola/claude-night-market | 341 | — | ~1.6k | Automated safety check: Pass | MIT | |
| Vercel Composition Patternssupabase/supabase | 111k | 58 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 297k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| PR Babysitteropeninterpreter/openinterpreter | 69k | 3 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 4 repos | ~1.1k | Automated safety check: Pass | MIT |
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Typescript Advanced Types
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Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications.
PR Babysitter
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Watches an open GitHub pull request until it merges, handling review comments, diagnosing CI failures and retrying flaky checks along the way.
Code Review Checklist
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Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
Greploop
onyx-dot-app/onyx
Iteratively improves a PR (GitHub), MR (GitLab), or shelved changelist (Perforce) until Greptile gives it a 5/5 confidence score with zero unresolved comments.
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Related
Categories
Questions about Skill Library Mission
What does Skill Library Mission do?
Build a project skill library in .claude/skills/ via discovery, parallel authoring, and review. Skill Library Mission is an agent skill from athola/claude-night-market.claude/skills/ via discovery, parallel authoring, and review.
When should I use Skill Library Mission?
Skill Library Mission fits situations like: packaging tribal knowledge.
How do I install Skill Library Mission in Claude Code?
Run `npx skills add athola/claude-night-market --skill skill-library-mission -a claude-code`. Or copy the skill folder (plugins/attune/skills/skill-library-mission in athola/claude-night-market) into .claude/skills/skill-library-mission in your project. Claude Code loads it when a task matches its description.
How do I install Skill Library Mission in Codex?
Run `npx skills add athola/claude-night-market --skill skill-library-mission -a codex`. Or copy the skill folder (plugins/attune/skills/skill-library-mission in athola/claude-night-market) into .agents/skills/skill-library-mission in your project. Codex loads it when a task matches its description.
Can I use Skill Library Mission 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 athola/claude-night-market --skill skill-library-mission -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-library-mission, .gemini/skills/skill-library-mission, .github/skills/skill-library-mission and .opencode/skills/skill-library-mission in your project.
What does Skill Library Mission need to run?
Going by SKILL.md and its folder, Skill Library Mission needs the command-line tools its instructions call (rg).
Does Skill Library Mission 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 Library Mission 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 Library Mission use?
Skill Library Mission is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Skill Library Mission use?
About 1.6k tokens (SKILL.md is roughly 6.2k 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 2k tokens, read only when the agent opens those files.
What are the alternatives to Skill Library Mission?
Skills that share tags, products or a category with Skill Library Mission: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Library Mission?
athola (a GitHub user) maintains it in athola/claude-night-market, which has 341 GitHub stars. The repository holds 152 skills in this directory. The repository was last updated on October 9, 2026.
Source: athola/claude-night-market on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.