Lean Coding Skills

Collection of small, markdown-first AI skills for lean, focused coding workflows.

Skills

Skill	Purpose
lcs-explore	Interactive explore flow for brainstorming and shaping ideas
lcs-toprd	Lean, implementation-focused PRD writer
lcs-prd-reviewer	Review, harden, and security-check an existing PRD
lcs-tosrs	Transform PRD into deterministic Lean SRS and test contract
lcs-task-slicer	Split a PRD or SRS into actionable, session-sized tasks
lcs-task-executor	Execute a task plan with Chain of Truth verification (canonical)
lcs-task-executer	Execute a task plan (legacy — prefer lcs-task-executor)
lcs-doc-finalizer	Finalize and wrap completed work into canonical docs
lcs-debug	Focused bug investigation and fix planning
lcs-debug-ext	Evidence-based debug reports and patch proposals without applying code changes
lcs-codebase-doc	Map and document existing repositories into verified onboarding docs
lcs-code-review	Review implementation against LCS artifacts
lcs-onboarding	Generate developer-friendly onboarding documentation
lcs-self-improvement	Analyze interaction friction and produce diagnostic recommendations
lcs-chain-of-truth	Chain of Truth meta-skill — auditable evidence protocol for all LCS skills
lcs-shared	Shared contract, folder conventions, and token optimization (internal)

Chain of Truth

LCS uses Chain of Truth as a cross-skill protocol for auditable, evidence-backed AI workflows.

Workflow

lcs-explore (Light)
↓
lcs-toprd (Standard)
↓
lcs-prd-reviewer (Strict)
↓
lcs-tosrs (Strict)
↓
lcs-task-slicer (Strict)
↓
lcs-task-executor (Very Strict)

Level Summary

Level	Used By
Light	lcs-explore
Standard	lcs-toprd, lcs-onboarding, lcs-debug, lcs-self-improvement
Strict	lcs-prd-reviewer, lcs-tosrs, lcs-task-slicer, lcs-doc-finalizer, lcs-codebase-doc, lcs-code-review
Very Strict	lcs-task-executor, lcs-task-executer (legacy), lcs-debug-ext
Meta	lcs-chain-of-truth (protocol, not self-applied), lcs-shared (internal)

Executor Naming

• Canonical: lcs-task-executor — use for new workflows
• Legacy: lcs-task-executer — still works; kept for backward compatibility

Install

npx skills add https://github.com/mdhb2/lean-coding-skills

Select claudecode when prompted. Restart Claude Code after install.

Update

npx skills update -y

Verify

After install, confirm skills are present:

Test-Path .claude\skills\lcs-explore\SKILL.md
Test-Path .claude\skills\lcs-toprd\SKILL.md
Test-Path .claude\skills\lcs-tosrs\SKILL.md
Test-Path .claude\skills\lcs-debug-ext\SKILL.md
Test-Path .claude\skills\lcs-codebase-doc\SKILL.md

Troubleshooting

• Skills not showing? Confirm .claude/skills/ exists and contains subfolders with SKILL.md.
• Restart Claude Code after install.
• Ensure YAML frontmatter name is unique and valid kebab-case.

Contributing

Add new skill under skills/<skill-name>/SKILL.md with frontmatter name and description. Keep directories self-contained and markdown-only.