Deferred item from PR #85 review. Per ADR-0013: cherry-picks two low-noise rules from trialing write-good/alex against the real corpus (VagueQualifier, SentenceOpenerThereIs) into styles/Kyberforge rather than adopting either package wholesale (both are tuned for blog prose and were noisy on this repo's terse, imperative instruction files - see the ADR's rejected-rule list). Adds a new skill-size-check pre-commit hook enforcing agentskills.io's 500-line/5,000-token SKILL.md ceiling, currently unenforced. Fixes the 28 resulting violations across 20 existing SKILL.md/agent files so the enforcing pre-commit hook lands clean. governance.md/CONTROLS.md were evaluated and excluded as rule sources - they're org/CI-infrastructure controls, not prose patterns Vale can express. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QUDczvw1H3eEeMD29Q9Lbi
marketplace-author
Adds, removes, and updates plugin entries in the holocron marketplace manifest.
What it does
Manages entries in the plugins[] array of marketplace.json. Always updates both .claude-plugin/marketplace.json and .github/plugin/marketplace.json in the same edit pass — never one without the other. Routes automatically to add, remove, update, or create-from-scratch based on whether the files exist and whether the named plugin is already in the catalog. Bumps the catalog version on every mutation (minor for ADD/REMOVE, patch for UPDATE). Runs claude plugin validate . after every mutating operation.
Before you start
Have ready: the plugin name (kebab-case), what you want to do (add/remove/update), and — for add — the source type and source value. If adding from an external repo, know the source type (local path, GitHub, git URL, or npm).
Usage
/marketplace-author
No manual script. This skill is purely agentic — it reads, edits, and writes the marketplace files directly using the Read/Edit/Write tools.
Files
| File | Purpose |
|---|---|
SKILL.md |
Skill instructions for agents |
references/manifest-fields.md |
Full field reference for top-level and per-entry marketplace.json fields, all four source type shapes with examples, and why both files must stay identical |
references/sources.md |
Research provenance — sources that informed this skill |
references/README.md |
Directory meta-documentation for references/ |
Marketplace files managed
| File | Read by |
|---|---|
.claude-plugin/marketplace.json |
Claude Code |
.github/plugin/marketplace.json |
Copilot CLI |