By zmackie
Skills for coding agent harness engineering: instruction authoring, context management, verification, codebase legibility, and multi-agent design. Plus general dev workflow skills.
Optimize a codebase for agent readability: documentation structure, domain organization, discoverability, and knowledge capture. Use when agents struggle to find relevant code, when tribal knowledge lives outside the repo, when onboarding an agent to an existing codebase, or when restructuring docs for agent workflows. Use this skill whenever the user wants to make their codebase easier for agents to navigate or understand. Part of the harness engineering workflow; start with `harness-audit` for overall assessment.
Perform a structured code review covering security, performance, correctness, and readability. Use when asked to review code, check a PR, or audit a file. For deeper security-focused analysis, see `vuln-research` instead.
Generate a conventional-commit message from staged changes. Use when asked to write a commit message or describe staged changes.
Design context management for coding agents: sub-agent decomposition, context resets, progressive disclosure hierarchies, and artifact handoffs. Use when agents lose coherence on long tasks, when context windows fill up, when you need to decompose complex workflows into isolated subtasks, or when setting up sub-agent patterns. Use this skill whenever the user mentions context windows, sub-agents, context management, agent memory, or long-running agent tasks. Part of the harness engineering workflow; start with `harness-audit` for overall assessment.
Generate novel ideas using cross-domain analogical mapping — forcing connections between your problem and semantically distant domains (biology, physics, social systems) to produce genuinely original solutions. Use when brainstorming creatively, generating novel ideas, exploring unconventional approaches, or when the user asks for "creative ideas", "think outside the box", or "brainstorm with analogies". Part of the creativity workflow — feed results into `idea-garden` or write them up with `vibe-research`.
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A Claude Code plugin with skills for harness engineering — configuring, optimizing, and verifying coding agent workflows — plus creativity, security, and general dev workflow skills.
Works with Claude Code, Codex, Cursor, Windsurf, Copilot, and custom agent systems.
/plugin marketplace add zmackie/skillz
/plugin install skillz@zmackie-skillz
| I want to... | Start with | Then consider |
|---|---|---|
| Set up or improve my agent workflow | harness-audit | The skills it recommends based on findings |
| Write CLAUDE.md / AGENTS.md / .cursorrules | write-agent-instructions | verification-harness to enforce them |
| Fix an agent losing context on long tasks | context-architecture | multi-agent-design if decomposition helps |
| Make my codebase easier for agents to navigate | agent-legibility | write-agent-instructions for the instruction side |
| Add hooks, linters, or CI checks for agent quality | verification-harness | harness-audit to identify what's missing |
| Design multi-agent pipelines | multi-agent-design | context-architecture for isolation patterns |
| Brainstorm creative or novel ideas | cross-domain-ideation | idea-garden to prototype the best ones |
| Prototype ideas autonomously in the background | idea-garden | vibe-research to write up results |
| Write a design doc, RFC, or research report | vibe-research | -- |
| Find security vulnerabilities in code | vuln-research | code-review for lighter review |
| Review code for quality | code-review | vuln-research for deeper security focus |
| Generate a commit message | commit-message | -- |
| Set up or work on a Python project | python-uv | verification-harness for pytest/mypy hooks |
| Integrate LLM APIs | openrouter-api | python-uv for Python project setup |
Start with harness-audit to assess your current setup — it diagnoses issues across five areas and points you to the right specialized skill.
harness-audit (start here)
|
|-- write-agent-instructions Write/improve CLAUDE.md, AGENTS.md, etc.
|-- verification-harness Set up hooks, linters, test runners, CI checks
|-- agent-legibility Optimize codebase for agent navigation
|-- context-architecture Design sub-agents, resets, progressive disclosure
|-- multi-agent-design Planner/generator/evaluator patterns
Three skills that form a generate -> prototype -> write-up pipeline:
| Skill | What it does |
|---|---|
cross-domain-ideation | Generate novel ideas using analogical mapping from distant domains |
idea-garden | Autonomously prototype ideas from a backlog (vapor -> fermenting -> liquid -> frozen) |
vibe-research | Produce polished written artifacts through multi-agent review loops |
| Skill | What it does |
|---|---|
vuln-research | LLM-assisted vulnerability research: threat modeling, slice-based auditing, adversarial prompting, PoC validation |
| Skill | What it does |
|---|---|
code-review | Structured code review (security, performance, correctness, readability) |
commit-message | Generate conventional-commit messages from staged diffs |
python-uv | Python project conventions (uv, click, pytest, type hints) |
openrouter-api | LLM integration patterns via OpenRouter |
Invoke skills as /skillz:<skill-name>:
/skillz:harness-audit
/skillz:write-agent-instructions
/skillz:code-review
Most skills also auto-trigger when Claude detects a relevant task.
Create skills/<name>/SKILL.md with YAML frontmatter:
---
name: my-skill
category: harness-engineering # or: creativity, security, general-dev
description: What it does and when to use it
---
Instructions for Claude when this skill is active.
See meta-skill.md for writing guidelines and AGENTS.md for plugin structure.
npx claudepluginhub zmackie/skillz --plugin skillzHarness for Claude Code — skills, /harness:* slash commands, persona subagents, lifecycle hooks, and MCP tools without per-repo `harness setup`. Sibling plugins exist for Cursor, Gemini CLI, and Codex.
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