skill-manager

name

skill-manager

description

Manage, sync, and publish Agent Skills across multiple AI platforms (Claude, Codex, Gemini, Copilot) and marketplace repositories. Use when users want to list skills, sync between platforms, publish to marketplace keys, mirror canonical skills, audit drift, or set up their environment. Triggers on phrases like "list skills", "sync skills", "publish skill", "skill marketplace", "deploy skill", "audit skills", or "skill inventory".

Skill Manager

Manage repo-canonical Agent Skills across marketplace repositories and runtime install surfaces.

Core Capabilities

1. Runtime Install - Install or refresh released skills into the canonical machine runtime path
2. Development Sync - Sync unpublished local skills across Claude Code, OpenAI Codex, Gemini CLI, and GitHub Copilot
3. Inventory - Discover and list all skills across platform locations
4. Publish - Push skills to tiered GitHub marketplace repositories (private/team/public)
5. Audit - Compare skill versions, detect drift, identify inconsistencies
6. Validate - Check skill compliance with the Agent Skills specification

Source of Truth

Skill-manager uses a repo-canonical model.

The intended release flow is:

1. author in a git repo checkout
2. publish to a marketplace repo
3. install the published artifact into ~/.claude/skills/<skill>
4. mirror ~/.codex/skills/<skill> to the Claude install
5. if the skill materializes repo-local files, run its repo refresh flow separately

Do not treat marketplace caches under ~/.claude/plugins/marketplaces/... as the canonical runtime path.

scripts/sync.py still exists for development-only movement of unpublished local skills. It is not the canonical release/install path.

Supported Platforms

Platform	User Skills Path	Detection
Claude Code	~/.claude/skills/	~/.claude/ exists
OpenAI Codex	~/.codex/skills/	~/.codex/ exists
Gemini CLI	~/.gemini/skills/	~/.gemini/ exists
GitHub Copilot	~/.copilot/skills/	~/.copilot/ exists

Quick Start

First-Time Setup

Run the interactive setup wizard:

scripts/init.py

This will:

1. Detect installed AI platforms on your system
2. Configure which runtime platforms to manage
3. Set the canonical runtime policy (claude primary, optional Codex mirror)
4. Set development sync mode for ad hoc unpublished skill syncs
5. Optionally configure marketplace repositories

Install Released Skills Into Runtime

Install a released skill from a local marketplace clone into the canonical machine runtime path:

scripts/install-from-marketplace.py --marketplace team --skill my-skill

This command:

1. reads the published artifact from the local marketplace clone
2. fully replaces ~/.claude/skills/<skill>
3. recreates or verifies ~/.codex/skills/<skill> as a symlink to the Claude install
4. removes stale files that disappeared from the published artifact

Use --all to refresh every published skill from a marketplace clone.

Sync Local Development Skills Between Platforms

For unpublished or branch-only work, you can still sync a local skill directly:

scripts/sync.py /path/to/local/my-skill --to codex

Or sync all skills from a specific runtime platform:

scripts/sync.py --all --from-platform claude

Options:

• --to claude,codex,gemini,copilot - Override target platforms
• --to auto - Auto-detect installed platforms
• --to all - Sync to all known platforms
• --mode symlink|copy - Override development sync mode
• --from-platform claude|codex|gemini|copilot - Required for --all unless legacy config still sets one
• --dry-run - Preview changes without applying
• --force - Overwrite existing skills without prompting
• --all - Sync all skills from source platform

List All Skills

scripts/inventory.py

Options:

• --platform claude|codex|gemini|copilot|all - Filter by platform
• --format table|json|yaml - Output format
• --verbose - Show full paths and metadata
• --source global|project|marketplace - Include selected source(s), repeatable
• --exclude-source global|project|marketplace - Exclude selected source(s), repeatable
• --global-only|--project-only|--marketplace-only - Single-source shortcuts
• --no-marketplace - Exclude marketplace entries
• --include-marketplace - Backward-compatible alias (marketplace is already included by default)

Inventory Behavior

• Default scripts/inventory.py output includes all discovered sources:
  • global skills
  • project skills
  • marketplace skills
• Use source flags only when you want to narrow results.
• Legacy include forms remain supported:
  • --include-marketplace
  • --include marketplace
  • --include=marketplace

Marketplace System

skill-manager works with marketplace keys from config.json (for example: private, team, public, partner, enterprise-core). Keys are identifiers only; repository names and plugin names can be arbitrary.

Publish a Skill

scripts/publish.py ~/.claude/skills/my-skill --to team
scripts/publish.py ~/.claude/skills/my-skill --to partner --in-development

Standard publish will:

1. Copy the skill to your team marketplace repo
2. Update marketplace.json
3. Validate and refresh the README.md "Available Skills" table entry
4. Push the publish branch to origin
5. Create and merge a PR back to the tracked default branch
6. Sync to other platforms (if configured)

In-development publish (--in-development) will:

1. Copy the skill to skills-in-development/
2. Skip marketplace.json updates (so it is not installable from marketplace)
3. Skip automatic README table updates
4. Create a PR for review

If the source path includes skills-in-development/, publish mode is inferred automatically.

If you don't specify --to, you'll be prompted to choose.

README rule: For standard publishes, the repository README.md must stay current. publish.py now validates the "Available Skills" table and updates the skill row automatically. If the README is missing or malformed, publish should fail until the repo documentation is fixed.

Sync Marketplace Repos

Pull latest from your marketplace repositories:

scripts/marketplace-sync.py
scripts/marketplace-sync.py --marketplace team
scripts/marketplace-sync.py --status
scripts/marketplace-sync.py --status --marketplace team
scripts/marketplace-sync.py --branch master
scripts/marketplace-sync.py --auto-stash
scripts/marketplace-sync.py --prune-merged

marketplace-sync.py --status should be your first repo hygiene check. It reports:

• Current checked-out branch versus the tracked default branch
• Ahead/behind drift from origin/<default-branch>
• Uncommitted changes
• Extra local branches
• Merged local branches that are safe cleanup candidates

Use --prune-merged to delete local branches that are already merged into the tracked branch. Review unmerged extra branches manually before deleting them.

Mirror Canonical Skills to Another Marketplace

Mirror from a canonical source ref (tag, branch, or commit) into a target marketplace with manifest and README updates:

scripts/marketplace-mirror.py mirror --from public --to partner --source-ref v1.2.0
scripts/marketplace-mirror.py mirror --from public --to partner --source-ref 8ab12cd --skill skill-manager
scripts/marketplace-mirror.py mirror --from public --to partner --source-ref main --dry-run

Generate drift reports at any time:

scripts/marketplace-mirror.py drift --from public --to partner
scripts/marketplace-mirror.py drift --from public --to partner --source-ref v1.2.0

Audit Runtime Drift

Audit how a skill moves from repo source to marketplace artifact to runtime install:

scripts/audit-runtime.py my-skill --marketplace team
scripts/audit-runtime.py my-skill --marketplace team --source ~/GitHub/skills-team/skills/my-skill

This reports:

• repo source vs marketplace artifact
• marketplace artifact vs Claude runtime copy
• Codex symlink status vs the Claude runtime copy

Legacy Marketplace Distribution

marketplace-distribute.py remains available for advanced or legacy workflows that intentionally symlink marketplace clones into other platform skill directories. It is not the recommended release/install path for Claude plus Codex.

Audit Skills for Drift

scripts/audit.py <skill-name>
scripts/audit.py --all

Validate a Skill

scripts/validate.py <skill-path>

Operator Quick Commands

# Repo hygiene
scripts/marketplace-sync.py --status
scripts/marketplace-sync.py --prune-merged

# List discovered skills
scripts/inventory.py

# Publish
scripts/publish.py ~/.claude/skills/my-skill --to team

# Install released runtime copy
scripts/install-from-marketplace.py --marketplace team --skill my-skill

# Mirror
scripts/marketplace-mirror.py mirror --from public --to team --source-ref main --skill my-skill

# Runtime audit
scripts/audit-runtime.py my-skill --marketplace team

# Marketplace drift
scripts/marketplace-mirror.py drift --from public --to team

Marketplace Repo Checklist

Run this checklist before and after any marketplace skill update:

1. Run scripts/marketplace-sync.py --status and confirm each repo is on its tracked default branch.
2. Confirm each repo is clean and not ahead/behind origin/<default-branch>.
3. Run scripts/marketplace-sync.py --prune-merged to clear merged local branches.
4. Review any remaining extra local branches and either delete them or keep them intentionally.
5. Publish or mirror the skill.
6. Push the branch and merge it back into the tracked default branch.
7. Re-run scripts/marketplace-sync.py --status on the default branch and verify the repo is aligned.
8. Verify the repo README.md "Available Skills" table matches the published skills.

Configuration

Configuration is stored in your user-local config file (created by scripts/init.py, typically ~/.config/skill-manager/config.json):

{
  "platforms": {
    "claude": {
      "enabled": true,
      "user_path": "~/.claude/skills"
    },
    "codex": {
      "enabled": true,
      "user_path": "~/.codex/skills"
    },
    "gemini": {
      "enabled": false,
      "user_path": "~/.gemini/skills"
    },
    "copilot": {
      "enabled": false,
      "user_path": "~/.copilot/skills"
    }
  },
  "runtime": {
    "primary_platform": "claude",
    "codex_mirrors_claude": true
  },
  "development_sync_mode": "copy",
  "sync_mode": "copy",
  "marketplaces": {
    "private": {
      "repo": "https://github.com/your-org/skills-internal",
      "description": "Personal/experimental skills",
      "visibility": "private"
    },
    "team": {
      "repo": "https://github.com/your-org/skills-team",
      "description": "Shared skills for collaborators",
      "visibility": "private"
    },
    "public": {
      "repo": "https://github.com/your-org/skills-public",
      "description": "Freely available skills",
      "visibility": "public"
    }
  },
  "owner": {
    "name": "Your Name",
    "email": "[e-mail]"
  },
  "local_repos_path": "~/GitHub"
}

Config Fields

Field	Description
platforms	Platform configurations (enabled, runtime path)
runtime	Canonical runtime policy (primary platform and Codex mirror behavior)
development_sync_mode	Default mode for ad hoc sync.py use
sync_mode	Legacy alias preserved for backward compatibility
marketplaces	GitHub repo URLs keyed by marketplace name
owner	Your name and email for commits
local_repos_path	Where marketplace repos are cloned

Marketplace Repository Structure

Each marketplace repo follows this structure:

<repository-name>/
├── .claude-plugin/
│   └── marketplace.json    # Plugin catalog
├── skills/
│   ├── skill-one/
│   │   ├── SKILL.md
│   │   └── scripts/
│   └── skill-two/
│       └── SKILL.md
├── skills-in-development/  # Optional: excluded from marketplace manifest
│   └── alpha-skill/
│       └── SKILL.md
└── README.md

marketplace.json Format

{
  "name": "skills-team",
  "owner": {
    "name": "Your Name",
    "email": "[e-mail]"
  },
  "metadata": {
    "description": "Shared skills for collaborators",
    "version": "1.0.0"
  },
  "plugins": [
    {
      "name": "skills-team",
      "description": "Shared skills for collaborators",
      "source": "./",
      "strict": false,
      "skills": [
        "./skills/skill-one",
        "./skills/skill-two"
      ]
    }
  ]
}

Workflow: Publishing Skills

Step 1: Develop Locally

Create and test your skill in a git repo checkout:

my-skill/
├── SKILL.md           # Required
├── scripts/           # Optional
├── references/        # Optional
└── assets/            # Optional

Step 2: Validate

scripts/validate.py /path/to/repo/skills/my-skill

Step 3: Publish

scripts/publish.py /path/to/repo/skills/my-skill --to team
# For alpha/in-progress skills that should not be marketplace-installable:
scripts/publish.py /path/to/repo/skills/my-skill --to team --in-development

Step 4: Merge PR

Review and merge the PR created in your marketplace repo.

Step 5: Install Runtime Copy

Refresh the canonical machine runtime copy from the published marketplace artifact:

scripts/install-from-marketplace.py --marketplace team --skill my-skill

If the machine uses Codex, this command should also verify or recreate the Codex symlink to the Claude runtime copy.

Cross-Platform Skill Development

Writing Portable Skills

• Avoid hardcoding platform-specific paths
• Use environment detection if behavior must differ
• Test on multiple platforms before publishing

Development Sync Modes

Mode	Pros	Cons
copy	Safe for unpublished development syncs	Must re-sync to propagate changes
symlink	Useful for advanced/temporary local workflows	Not the recommended release runtime model

Skill Specification Compliance

Field	Required	Max Length	Rules
name	Yes	64 chars	Lowercase, hyphens, digits only
description	Yes	1024 chars	No angle brackets. Include WHAT and WHEN
license	No	-	License name or file reference

Troubleshooting

Skill Not Appearing After Publish

1. Merge the PR - Skills only appear after the PR is merged
2. Refresh marketplace - In /plugin UI, go to Marketplaces tab and press u to update
3. Verify marketplace.json - Check that the skill path is in the plugins array

Sync Not Working

1. Check your config: cat ~/.config/skill-manager/config.json
2. Verify target platforms are enabled: look for "enabled": true
3. If using --all, pass --from-platform or set a runtime primary platform
4. Run with --dry-run to preview: scripts/sync.py --all --from-platform claude --dry-run

Platform Not Detected

1. Ensure the platform is installed and has its config directory
2. Check paths in config.json match your system
3. Re-run scripts/init.py to reconfigure

Publish Fails

1. Check that gh CLI is installed and authenticated
2. Verify repository URLs in config.json
3. Run scripts/marketplace-sync.py --status to check repo state

Codex Mirror Issues

# Check runtime install
ls -la ~/.claude/skills/my-skill

# Check Codex mirror
ls -la ~/.codex/skills/my-skill

IDE Reload Reminder

After syncing or publishing skills, you may need to reload your IDE window for changes to take effect:

• VS Code: Cmd+Shift+P → "Reload Window"
• This is required because AI assistants load their skill inventory at startup

See Also

• skill-creator skill - For creating new skills from scratch
• Agent Skills Specification - Full specification