lean-implementation

lean-implementation is a skill for Claude Code, Codex from nevitonsantana/adaptive-skills. It costs 25 tokens per session (799 once invoked), scanned A, original, no licence file.

A skill for implementing the smallest safe code change that matches an agreed plan. It preserves validation, boundaries, and evidence that the change was checked.

In plain words
What is it for?
Use it when carrying out a planned fix or feature and you need a focused change with validation and handoff notes.
Why use it?
It helps prevent unnecessary edits and keeps implementation aligned with a confirmed design.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when carrying out a planned fix or feature and you need a focused change with validation and handoff notes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nevitonsantana/adaptive-skills/lean-implementation
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add nevitonsantana/adaptive-skills --skill lean-implementation
Clone the repo
git clone --depth 1 https://github.com/nevitonsantana/adaptive-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for lean-implementation

README.md
[![agentmods](https://agentmods.dev/badge/skills/nevitonsantana/adaptive-skills/lean-implementation.svg)](https://agentmods.dev/skills/nevitonsantana/adaptive-skills/lean-implementation)
Your own site
<a href="https://agentmods.dev/skills/nevitonsantana/adaptive-skills/lean-implementation"><img src="https://agentmods.dev/badge/skills/nevitonsantana/adaptive-skills/lean-implementation.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 799 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00025 $0.00799
Opus 5 $0.00013 $0.00400
Sonnet 5 $0.00005 $0.00160
Haiku 4.5 $0.00003 $0.00080

Measured 8d ago against content hash f82d4e612626, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

lean-implementation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/lean-implementation/SKILL.md · 90 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 90 lines · 25 tokens per session scan A f82d4e612626

Subscribe to this mod's changes

lean-implementation is a skill published in the GitHub repository nevitonsantana/adaptive-skills (2 stars, last pushed 1mo ago), with no licence file. It adds 25 tokens to every session and 799 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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