Darwin Skill Optimizer
alchaincyf/darwin-skill
Scores SKILL.md files on a nine-dimension rubric, then improves them in a keep-or-revert loop with independent judge agents, test prompts, git history and human checkpoints.
Trigger: update skills, skill registry, actualizar skills, after skill changes.
Install Skill Registry
$ npx skills add Gentleman-Programming/gentle-ai --skill skill-registry -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Gentleman-Programming/gentle-ai skill-registry --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/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .claude/skills && cp -r skills-src/internal/assets/skills/skill-registry .claude/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .claude/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registryType 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 Gentleman-Programming/gentle-ai --skill skill-registry -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Gentleman-Programming/gentle-ai skill-registry --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .agents/skills && cp -r skills-src/internal/assets/skills/skill-registry .agents/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .agents/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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 Gentleman-Programming/gentle-ai --skill skill-registry -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Gentleman-Programming/gentle-ai skill-registry --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/internal/assets/skills/skill-registry .cursor/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .cursor/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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/Gentleman-Programming/gentle-ai.git --path internal/assets/skills/skill-registry--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 Gentleman-Programming/gentle-ai --skill skill-registry -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Gentleman-Programming/gentle-ai skill-registry --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/internal/assets/skills/skill-registry .gemini/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .gemini/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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 Gentleman-Programming/gentle-ai skill-registryInstalls 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 Gentleman-Programming/gentle-ai --skill skill-registry -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .github/skills && cp -r skills-src/internal/assets/skills/skill-registry .github/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .github/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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 Gentleman-Programming/gentle-ai --skill skill-registry -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Gentleman-Programming/gentle-ai skill-registry --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/internal/assets/skills/skill-registry .opencode/skills/skill-registry && 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-registry" agent skill from https://github.com/Gentleman-Programming/gentle-ai/tree/main/internal/assets/skills/skill-registry into .opencode/skills/skill-registry/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "skill-registry", 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-registry- GitHub stars
- 7.6k
- Token cost
- ~720 tokens
- SKILL.md length
- 359 words
- Files
- 1
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- MIT
At a glance
Trigger: update skills, skill registry, actualizar skills, after skill changes.
- Works in 5 steps: Run gentle-ai skill-registry refresh… → Only if the command is unavailable: scan… → Render .atl/skill-registry.md with… → …
- Tasks that involve Skill management
- SKILL.md covers Activation Contract, Hard Rules, Decision Gates and Execution Steps, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Skill Registry is an agent skill from Gentleman-Programming/gentle-ai. Trigger: update skills, skill registry, actualizar skills, after skill changes. Index available skills by trigger and path.
Its SKILL.md is about 720 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 Agent Workflows, covering Skill management. The repository describes itself as: Gentle-AI configures the AI coding agents you already use: Claude Code, Cursor, OpenCode, Codex, Pi, and more. Choose persistent memory, Organic-Driven Development, curated… The licence is MIT.
When your agent uses it
- Tasks that involve Skill management
Example prompts
- “/skill-registry”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Run gentle-ai skill-registry refresh --cwd (add --force after skill changes); it writes .atl/skill-registry.md. If it reports the refresh…
- Only if the command is unavailable: scan all known user and project skill directories for */SKILL.md, reading frontmatter only as needed…
- Render .atl/skill-registry.md with scanned sources, registry contract, skill name, trigger/description, scope, and exact path.
- Persist to Engram when available using title: skill-registry, topic_key: skill-registry, type: config, and capture_prompt: false.
- Return the registry path, skill count, cache status, and whether Engram was updated.
What it can do on your machine
Read from SKILL.md and the folder at commit 81d2225. 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
Skill Registry loads about 720 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 359 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 Gentleman-Programming/gentle-ai at commit 81d2225, republished under its MIT licence (© Gentleman-Programming). 359 words, ~720 tokens.
Download SKILL.mdSave it as
.claude/skills/skill-registry/SKILL.md (or your agent's skills folder).- name
- skill-registry
- description
- Trigger: update skills, skill registry, actualizar skills, after skill changes. Index available skills by trigger and path.
- license
- MIT
- metadata.author
- gentleman-programming
- metadata.version
- 1.0
Activation Contract
Use this skill after installing, removing, creating, moving, or renaming skills, or when a delegator needs a fresh skill index.
Hard Rules
- The registry is an index, not a compiler or summary.
SKILL.mdremains the source of truth. - Do not generate or inject compact rules by default; preserve author intent by passing exact skill paths to subagents.
- Always write
.atl/skill-registry.md, whether or not Engram is available. - Save the registry to Engram as
topic_key: skill-registrywhen available, withcapture_prompt: false. - Generate the registry with
gentle-ai skill-registry refresh --cwd <project>: it owns the scan order, deduplication, and the skills it never indexes. Scan by hand only when that command is unavailable. - When scanning by hand, skip
_sharedandskill-registry; deduplicate by skill name, preferring project-level skills over user-level skills. - Add
.atl/to.gitignorewhen possible unless explicitly disabled.
Decision Gates
| Situation | Action |
|---|---|
| Same skill exists globally and in project | Keep the project-level skill |
| Same skill exists in multiple global locations | Keep the first source in scan order |
| No skills found | Write an empty registry so agents stop searching blindly |
| Agent will delegate work | Select matching registry rows and pass their SKILL.md paths |
Show full SKILL.md (167 more words)Show less
Execution Steps
- Run
gentle-ai skill-registry refresh --cwd <project>(add--forceafter skill changes); it writes.atl/skill-registry.md. If it reports the refresh was skipped (not a project), stop: there is no registry to persist. If it succeeds, go to step 4. If it fails, report the error instead of scanning by hand. - Only if the command is unavailable: scan all known user and project skill directories for
*/SKILL.md, reading frontmatter only as needed to extractnameanddescriptiontrigger text. - Render
.atl/skill-registry.mdwith scanned sources, registry contract, skill name, trigger/description, scope, and exact path. - Persist to Engram when available using
title: skill-registry,topic_key: skill-registry,type: config, andcapture_prompt: false. - Return the registry path, skill count, cache status, and whether Engram was updated.
Output Contract
Return:
- Project name and
.atl/skill-registry.mdpath. - Number of indexed skills.
- Whether the cache was hit or regenerated.
- Any skipped or duplicate skills when relevant.
References
docs/skill-style-guide.md— how skills should be authored before indexing.skills/_shared/skill-resolver.md— how delegators use the index.
© Gentleman-Programming, MIT. 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 internal/assets/skills/skill-registry of Gentleman-Programming/gentle-ai.
Open the folder on GitHubat commit 81d2225
Compare with similar skills
Skill Registry 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 Registry this skillGentleman-Programming/gentle-ai | 7.6k | — | ~720 | Automated safety check: Pass | MIT | |
| Darwin Skill Optimizeralchaincyf/darwin-skill | 6.2k | 1 repos | ~4.7k | Automated safety check: Pass | MIT | |
| Using Agent Skillsaddyosmani/agent-skills | 102k | 4 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Skill Creatorzhayujie/CowAgent | 47k | — | ~4.7k | Automated safety check: Notes | MIT | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~12k | Automated safety check: Pass | CC-BY-4.0 | |
| Skill Stocktakeaffaan-m/ECC | 274k | 5 repos | ~1.9k | Automated safety check: Pass | MIT |
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Categories
Questions about Skill Registry
What does Skill Registry do?
Trigger: update skills, skill registry, actualizar skills, after skill changes. Skill Registry is an agent skill from Gentleman-Programming/gentle-ai. Trigger: update skills, skill registry, actualizar skills, after skill changes.
When should I use Skill Registry?
Skill Registry fits situations like: tasks that involve Skill management.
How do I install Skill Registry in Claude Code?
Run `npx skills add Gentleman-Programming/gentle-ai --skill skill-registry -a claude-code`. Or copy the skill folder (internal/assets/skills/skill-registry in Gentleman-Programming/gentle-ai) into .claude/skills/skill-registry in your project. Claude Code loads it when a task matches its description.
How do I install Skill Registry in Codex?
Run `npx skills add Gentleman-Programming/gentle-ai --skill skill-registry -a codex`. Or copy the skill folder (internal/assets/skills/skill-registry in Gentleman-Programming/gentle-ai) into .agents/skills/skill-registry in your project. Codex loads it when a task matches its description.
Can I use Skill Registry 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 Gentleman-Programming/gentle-ai --skill skill-registry -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-registry, .gemini/skills/skill-registry, .github/skills/skill-registry and .opencode/skills/skill-registry in your project.
What does Skill Registry need to run?
SKILL.md names no scripts, command-line tools or credentials: Skill Registry is instructions for the agent only.
Does Skill Registry 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 Registry 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 Registry use?
Skill Registry is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Skill Registry use?
About 720 tokens (SKILL.md is roughly 2.9k 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 Skill Registry?
Skills that share tags, products or a category with Skill Registry: Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars), Using Agent Skills (addyosmani/agent-skills, 102k stars), Skill Creator (zhayujie/CowAgent, 47k stars) and Task Observer (rebelytics/one-skill-to-rule-them-all, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Skill Registry?
Gentleman-Programming (a GitHub organization) maintains it in Gentleman-Programming/gentle-ai, which has 7,583 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on October 7, 2026.
Source: Gentleman-Programming/gentle-ai on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.