Install from the marketplace
Add the marketplace by path, then install by identity: run /plugin marketplace add product-on-purpose/agent-plugins, then /plugin install agent-skills-toolkit@product-on-purpose.
agent-skills-toolkit
Turn a folder of skills into a graded, cross-agent, CI-gated plugin library - for Claude Code and Codex.
A tiered Standard
The Advanced Skill Library Standard grades a whole plugin Bronze, Silver, or Gold - the highest tier it actually earns, with a burndown to the next. Not per-skill linting: system-level conformance.
A deterministic gate
Objective rules (structure, portability, security) are checked by portable Node scripts with no LLM, so the grade is trustworthy in CI. Judgment work (behavioral evaluation, review) sits beside the gate as opt-in evidence, never inside it.
Genuinely cross-agent
Emits for Claude Code and Codex, and is honest about asymmetry: it knows which component types each agent can and cannot ship, and encodes those facts as checks.
Self-hosting
The toolkit is itself a conformant plugin that passes its own checks. The product is its own best example.