Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.
Implement the next task incrementally — build, test, verify, commit
Simplify code for clarity and maintainability — reduce complexity without changing behavior
Break work into small verifiable tasks with acceptance criteria and dependency ordering
Conduct a five-axis code review — correctness, readability, architecture, security, performance
Run the pre-launch checklist via parallel fan-out to specialist personas, then synthesize a go/no-go decision
Senior code reviewer that evaluates changes across five dimensions — correctness, readability, architecture, security, and performance. Use for thorough code review before merge.
Security engineer focused on vulnerability detection, threat modeling, and secure coding practices. Use for security-focused code review, threat analysis, or hardening recommendations.
QA engineer specialized in test strategy, test writing, and coverage analysis. Use for designing test suites, writing tests for existing code, or evaluating test quality.
Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.
Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, profile performance, or verify visual output with real runtime data. Requires the chrome-devtools MCP server to be configured.
Automates CI/CD pipeline setup. Use when setting up or modifying build and deployment pipelines. Use when you need to automate quality gates, configure test runners in CI, or establish deployment strategies.
Conducts multi-axis code review. Use before merging any change. Use when reviewing code written by yourself, another agent, or a human. Use when you need to assess code quality across multiple dimensions before it enters the main branch.
Simplifies code for clarity. Use when refactoring code for clarity without changing behavior. Use when code works but is harder to read, maintain, or extend than it should be. Use when reviewing code that has accumulated unnecessary complexity.
Uses power tools
Uses Bash, Write, or Edit tools
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Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.
Skills encode the workflows, quality gates, and best practices that senior engineers use when building software. These ones are packaged so AI agents follow them consistently across every phase of development.
7 slash commands that map to the development lifecycle. Each one activates the right skills automatically.
| What you're doing | Command | Key principle |
|---|---|---|
| Define what to build | /td-spec | Spec before code |
| Plan how to build it | /td-plan | Small, atomic tasks |
| Build incrementally | /td-build | One slice at a time |
| Prove it works | /td-test | Tests are proof |
| Review before merge | /td-review | Improve code health |
| Simplify the code | /td-code-simplify | Clarity over cleverness |
| Ship to production | /td-ship | Faster is safer |
Skills also activate automatically based on what you're doing — designing an API triggers td-api-and-interface-design, building UI triggers td-frontend-ui-engineering, and so on.
Option A: Marketplace (fastest)
claude plugin marketplace add qianxian-yang/harness-plugin
claude plugin install harness-plugin@td-quality
SSH errors? The marketplace clones repos via SSH. If you don't have SSH keys set up on GitHub, use the full HTTPS URL:
claude plugin marketplace add https://github.com/qianxian-yang/harness-plugin.git claude plugin install harness-plugin@td-quality
Option B: Local / development
git clone https://github.com/qianxian-yang/harness-plugin.git
claude --plugin-dir /path/to/harness-skills
After install, run /td-test in Claude Code to confirm commands are available.
The commands above are entry points. The pack includes 24 skills total — 23 lifecycle skills plus the td-skill-navigation meta-skill. Each skill is a structured workflow with steps, verification gates, and anti-rationalization tables. You can also reference any skill directly.
| Skill | What It Does | Use When |
|---|---|---|
| td-skill-navigation | Maps incoming work to the right skill workflow and defines shared operating rules | Starting a session or deciding which skill applies |
| Skill | What It Does | Use When |
|---|---|---|
| td-intent-refine | Clarify fuzzy requests into confirmed intent and a recommended direction before spec or implementation | The ask is underspecified, too broad, or needs options and trade-offs before writing a spec |
| td-spec-driven-development | Write a PRD covering objectives, commands, structure, code style, testing, and boundaries before any code | Starting a new project, feature, or significant change |
| Skill | What It Does | Use When |
|---|---|---|
| td-planning-and-task-breakdown | Decompose specs into small, verifiable tasks with acceptance criteria and dependency ordering | You have a spec and need implementable units |
npx claudepluginhub qianxian-yang/harness-plugin --plugin harness-pluginFeature development with code-architect/explorer/reviewer agents, CLAUDE.md audit and session learnings, and Agent Skills creation with eval benchmarking from Anthropic.
Production-grade engineering skills for AI coding agents — covering the full software development lifecycle from spec to ship.
Access thousands of AI prompts and skills directly in your AI coding assistant. Search prompts, discover skills, save your own, and improve prompts with AI.
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