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Tlc Spec Lean

Category: Engineering  ·  Sub-category: architecture  ·  Last updated:
type:review
Spec-driven feature work that freezes obligations instead of the plan: one human-reviewed plan with EARS criteria, path, entities, interface and one-way doors, then proof-backed checks, then build, then an independent Verifier. Use when the user says "tlc-spec-lean", "plan feature", "specify feature", "write the checks", "build this plan", or "verify work". Do NOT use for standalone design documents unattached to a feature, architecture decomposition analysis, or work that already has a task list or checklist to execute.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Freeze the obligations. Free the plan. Prove it with someone who did not build it. Derived from tlc-spec-driven 3.3.0 (Felipe Rodrigues), tlc-plan, and tlc-implement.

┌──────┐   ┌────────┐   ┌───────┐   ┌────────┐
│ PLAN │ → │ CHECKS │ → │ BUILD │ → │ VERIFY │
└──────┘   └────────┘   └───────┘   └────────┘
 read it    obligations   yours       always

What this skill does

Tlc Spec Lean is a community-contributed Claude Code skill in the architecture sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/tlc-spec-lean/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user says "tlc-spec-lean", "plan feature", "specify feature", "write the checks", "build this plan", or "verify work". Do NOT use for standalone design documents unattached to a feature, architecture decomposition analysis, or work that already has a task list or checklist to execute.

Who uses this skill

The Tlc Spec Lean Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/tlc-spec-lean
curl -L https://claudskills.com/skills/tlc-spec-lean/SKILL.md \
  -o ~/.claude/skills/tlc-spec-lean/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/tlc-spec-lean/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/tlc-spec-lean/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\tlc-spec-lean\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Tlc Spec Lean Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/tlc-spec-lean/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Tlc Spec Lean skill do?
Spec-driven feature work that freezes obligations instead of the plan: one human-reviewed plan with EARS criteria, path, entities, interface and one-way doors, then proof-backed checks, then build, then an independent Verifier. Use when the user says "tlc-spec-lean", "plan feature", "specify feature", "write the checks", "build this plan", or "verify work". Do NOT use for standalone design documents unattached to a feature, architecture decomposition analysis, or work that already has a task list or checklist to execute.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Tlc Spec Lean skill?
Use Tlc Spec Lean when your Claude Code task falls under the Engineering category — specifically in the architecture area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Tlc Spec Lean" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Tlc Spec Lean skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Tlc Spec Lean is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
tech-leads-club. (2026). Tlc Spec Lean [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/tlc-spec-lean/
BibTeX
@misc{tlc-spec-lean-2026,
  author    = {tech-leads-club},
  title     = {Tlc Spec Lean [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/tlc-spec-lean/}
}

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Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

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