lean-build

Build feature work with high overbuilding risk.

IndexedApache-2.0★ 114,786

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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/juliusbrussee-lean-build

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About

Build feature work with high overbuilding risk. Use for new behavior, product slices, or integrations where repository reuse, strict scope, and an explicit stop condition matter.

Use cases: code-generation

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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codeload.github.com · found in install command

Files it touches

~/.claude/skills/lean-build

What's inside

Skill name: lean-build
Description: Build feature work with high overbuilding risk. Use for new behavior, product slices, or integrations where repository reuse, strict scope, and an explicit stop condition matter.
License: Apache-2.0
Instructions: 15 lines in SKILL.md · view on GitHub

Files (2)

SKILL.md
openai.yaml · agents/

SKILL.md (first lines)

# Lean build

Native Core's architecture-first simplicity remains mandatory. Turn feature into complete narrow outcome fitting system.

- Derive observable acceptance and explicit non-goals from request and repository.
- Trace entry point through layers owning invariants.
- Deliver coherent end-to-end path across responsible layers; never force work into one file, direct expression, or local patch.
- Reuse fitting seam. Refactor when patching duplicates behavior, weakens ownership, or hides root cause.
- Omit modes, providers, config, extensibility, and polish unless acceptance needs them.
- Add surface, dependency, service, config, or migration only for lifecycle design or acceptance; state material tradeoff.
- Keep work runnable; preserve Core safety.

Exercise path. Run focused proof. Stop when acceptance passes. Report only material omissions and trigger.

From JuliusBrussee/caveman, Apache-2.0.

Signals

Stars: 114,786
Forks: 6,616
Open issues: 64
Last commit (this folder): Aug 11, 2026 (2 months ago)
Last release: Oct 13, 2026 (14 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License: Apache-2.0
Repository: github.com/JuliusBrussee/caveman
Website: docs.caveman.so/caveman
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: GitHub github-graphql

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lean-build skill. Agent Mart. https://agentmart.dev/skills/juliusbrussee-lean-build (last updated 2026-10-24)