skill-bench-marketplace

Skill Bench

Interactive skill authoring for Claude Code — create, test, and refine skills through structured conversation.

Install

claude plugin marketplace add https://github.com/Yiminnn/skill-bench-plugin
claude plugin install skill-bench

Quick Start

/skill-bench

Phase	What Happens	Powered By
1. Design	Brainstorm approaches, produce design spec	superpowers:brainstorming
2. Plan	Generate implementation tasks with TDD steps	superpowers:writing-plans
3. Build & Test	Build skill, eval with baseline comparison, iterate	skill-creator
4. Validate	Multirun consistency testing, user judgment, refinement	consistency-tester + skill-refiner
5. Finalize	Lint, validate references, promote	built-in

Refine an existing skill

Already have a skill? Skip straight to validation:

/skill-bench
> refine path/to/my-skill/SKILL.md

Quick Reference

You want to...	Say...
Create a new skill	/skill-bench
Refine an existing skill	/skill-bench then refine path/to/skill
Approve a step	y or looks good
Edit the draft yourself	Edit in your editor, then say I edited it
Run quick test	yes (when offered sample run)
Run thorough testing	full validation
Mark a run as failed	run 3 failed — [what went wrong]
Approve proposed fixes	approve all or approve fix 1 and 3
Finish testing	validation complete
Check existing drafts	show me my skill drafts

Components

Component	Type	Model	Purpose
skill-bench	Skill	—	5-phase workflow orchestrator
skill-tester	Agent	Opus	Simulates skill execution, returns structured eval with thinking trace
consistency-tester	Agent	Opus	Multirun validation: run N times, compare, collect judgment, refine
skill-refiner	Agent	Opus	Dual-lens failure analysis (cross-run + per-run), proposes targeted edits
skill-explorer	Agent	Haiku	Read-only scanner for drafts and test history

Configuration

On first use, creates .skillbench/config.json in your project:

{
  "drafts_dir": "skills/drafts",
  "evals_dir": ".skillbench/evals",
  "test_model": "claude-opus-4-6",
  "context_files": []
}

Artifacts

Path	Purpose	Tracked?
.skillbench/config.json	Project settings	Yes
.skillbench/specs/	Design specs	Yes
.skillbench/plans/	Implementation plans	Yes
.skillbench/evals/	Eval definitions	Yes
.skillbench/test-cases/	Test case libraries	Yes
.skillbench/workspace/	Skill-creator iterations	No
.skillbench/test-history/	Test results and refinements	No

Prerequisites

Requires two dependencies (both auto-installed on first use):

• superpowers — Phases 1-2 (brainstorming + planning)
• skill-creator — Phase 3 (build + eval)

Manual install if needed:

claude plugin install claude-plugins-official/superpowers

License

MIT