implement

implement is a skill for Claude Code from ANcpLua/ancplua-claude-plugins. It costs 64 tokens per session (634 once invoked), scanned A, original, MIT.

A controlled workflow for applying verified code-review findings within a fixed scope. It changes only the relevant files, preserves existing behavior unless told otherwise, and runs checks before reporting completion.

In plain words
What is it for?
Use it after a review to make focused fixes, simplify duplicated code when justified, and address maintainability or correctness findings without expanding the task.
Why use it?
It prevents broad refactors and changes based on unproven assumptions. Each edit must connect a finding to evidence, a specific change, and a check that the result works.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the nihil plugin — 6 skills, 1 command, 5 agents shipped together

Good fit Use it after a review to make focused fixes, simplify duplicated code when justified, and address maintainability or correctness findings without expanding the task.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ancplua/ancplua-claude-plugins/implement
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 ANcpLua/ancplua-claude-plugins --skill implement
Clone the repo
git clone --depth 1 https://github.com/ANcpLua/ancplua-claude-plugins

Made for: Claude Code.

Or install nihil, the plugin that ships this one along with the rest of its 6 skills, 1 command, 5 agents.

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 implement

README.md
[![agentmods](https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/implement/github.svg)](https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/implement)
Your own site
<a href="https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/implement"><img src="https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/implement/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for implement

Your own site · 80×15
<a href="https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/implement"><img src="https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 634 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 original 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 $0.00064 $0.00634
Opus 5.5 $0.00026 $0.00254
Sonnet 5.5 $0.00013 $0.00127
Haiku 4.5 $0.00006 $0.00063

Measured 16d ago against content hash 87ddd92523b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implement 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 16d 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.

plugins/nihil/skills/implement/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nihil Implementation

Activate Implementation Mode. You may modify files inside the requested scope. A PreToolUse hook blocks git push, git tag, package publishing, version bumps, and obviously destructive shell while this mode is active — those are release steps; use /nihil:release. git commit is allowed but not required.

Critical instructions

  1. Evidence before change. Implement only findings backed by repository evidence. If a finding lacks evidence, do not implement it — go back to /nihil:review.
  2. Scope discipline. Modify only the files the task names or that the finding's evidence directly implicates. Do not perform broad refactors or opportunistic cleanup. Prefer three clear similar lines over a premature abstraction; extract only when repetition is real and the name improves understanding.
  3. Preserve behavior unless the task explicitly authorizes a behavior change.

Sequence

For each finding, follow:

Finding → Evidence → Change → Check
  1. Finding. State the finding and its evidence (files/symbols).
  2. Change. Make the minimal correct edit. Do not add error handling, fallbacks, guards, or validation for scenarios that cannot happen (proven only by source, types, framework guarantees, tests, or boundaries). Validate only at real boundaries. No feature flags, compatibility shims, or migration scaffolding when the correct fix is to change the code directly.
  3. Check. Run the relevant checks — build, tests, or run the artifact — and compare against a baseline you captured before editing. Do not report a failure you caused as preexisting.

Use specialized read-only agents (nihil:duplication-hunter, nihil:abstraction-critic, nihil:boundary-reviewer, nihil:evidence-auditor) via the Task tool to confirm a change is correct and in-scope when uncertain.

Output

Produce exactly this structure (the Stop hook blocks once if a Verification section is missing):

# Nihil Implementation

## Implemented Findings

<each finding implemented, with the evidence that justified it>

## Changed Files

<exact files changed and why>

## Verification

<checks you ran (build/tests/run), their output, and the baseline you compared to>

## Remaining Risks

<anything not fully verified, out-of-scope follow-ups, or assumptions made>

Read the full file on GitHub · 72 lines

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. 16d ago First seen · 72 lines · 64 tokens per session scan A 87ddd92523b2

Subscribe to this mod's changes

implement is a skill published in the GitHub repository ANcpLua/ancplua-claude-plugins (6 stars, last pushed 5d ago), licensed MIT. It adds 64 tokens to every session and 634 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-10-01.

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