## Why Plugin and marketplace management had no governed authoring path. Creating or updating a plugin required knowing the dual-manifest convention, version parity rules, and directory skeleton by memory — nothing enforced consistency or guided the process. `/plugin-author` closes that gap by owning the full plugin scaffold lifecycle: create, update, rename, and release. `/marketplace-author` handles the marketplace-facing side: register, deregister, and update plugin entries in `marketplace.json`. ADR-0016 codifies the version parity convention (identical `version` in both `plugin.json` and `.claude-plugin/plugin.json`) that `/plugin-author` now enforces. The two plugin.json files in this repo are backfilled to comply (keys also sorted to pass the pretty-format-json hook). CONTEXT.md gains glossary entries for "plugin scaffold" and "version parity" so future agents have shared vocabulary for these concepts. ## Implementation Notes `/plugin-author` ships a `scripts/new-plugin.sh` scaffold script that generates the directory skeleton and both manifests in one shot; the skill calls the script rather than generating files ad hoc so the scaffold is reviewable and repeatable. Version parity is an invariant, not a suggestion — the skill will fail loudly on create/update if the two versions would diverge. ADR: docs/adr/0016-plugin-version-parity.md
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plugin-author
Creates, updates, and releases plugin scaffolds for the holocron marketplace.
What it does
Manages both manifests (plugin.json for Copilot CLI and .claude-plugin/plugin.json for Claude Code) in one pass. Three operations: create a new plugin scaffold with placeholder manifests and skeleton dirs; update configuration fields (shared fields updated in both manifests simultaneously); release a version with HITL gate before tagging.
Out of scope: plugin content (skills, agents, hooks, MCP servers inside those dirs) and marketplace.json entries.
Before you start
Have ready: the plugin name (kebab-case) and the repo root path.
Usage
/plugin-author
Manual scaffold (human workflow):
bash scripts/new-plugin.sh <plugin-name> <repo-root>
# Examples:
bash scripts/new-plugin.sh my-tools /root/ai-development
bash scripts/new-plugin.sh data-tools .
Files
| File | Purpose |
|---|---|
SKILL.md |
Skill instructions for agents |
scripts/new-plugin.sh |
Scaffolds both manifests and skeleton dirs for a new plugin |
references/manifest-fields.md |
All optional fields for both manifests beyond the scaffolded defaults |
references/sources.md |
Research provenance — sources that informed this skill |
scripts/README.md |
Directory meta-documentation for scripts/ |
references/README.md |
Directory meta-documentation for references/ |
tests/README.md |
Test dependency instructions and run command |