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Lean build · juliusbrussee | DecimalAI

codingby juliusbrussee

Lean build

juliusbrussee/lean-build

Source juliusbrussee/caveman ↗License NOASSERTION

Build feature work with high overbuilding risk.

NewMaintained

Automatic

Coding pack

Last verified 9/8/2026

What it changes

5 of 22 test cases passed with the skill.

Pass-rate lift: —
Tokens: +4%
Agent turns: 0%
Response time: +16%

Model gemini-3.6-flashMeasured 9/8/2026v15 of 22 cases passed with skill · 5 comparable

Tokens, turns and time describe resource use, not a dollar price.

Lift withheld: 5 comparable cases; this report requires 8.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/juliusbrussee-lean-build/SKILL.md https://app.decimal.ai/s/juliusbrussee-lean-build/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add juliusbrussee-lean-build, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/juliusbrussee-lean-build/ and pins it in .decimal/skills.lock

decimalai skills add juliusbrussee-lean-build

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/juliusbrussee-lean-build/SKILL.md https://app.decimal.ai/s/juliusbrussee-lean-build/SKILL.md

Raw file: /s/juliusbrussee-lean-build/SKILL.md ↗ · machine-readable summary at /s/juliusbrussee-lean-build.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

We need an internal audit log CSV export command for our admin backend. Include options for multiple export formats (JSON, XML, Parquet), customizable compression algorithms, and progress bar output for long runs. Provide the working command.

What was checked, without and with the skill
Checked	Without skill	With skill
Omits export formats other than CSV.	Missed	Passed
Lists explicit non-goals in the scope definition.	Missed	Passed

case-10 · gemini-3.6-flash · 9/8/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md13 linessingle file

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.

Track record

Benchmark

5 / 22

test cases passed with the skill

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 8/15/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

juliusbrussee / caveman

skills/lean-build/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/15/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Lean build

Track record

Benchmark

Adoption

SkillSafety

Source

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