nihil

nihil is a skill for Claude Code from ANcpLua/ancplua-claude-plugins. It costs 121 tokens per session (1,687 once invoked), scanned A, original, MIT.

A last-resort method for rethinking an entire code repository from basic principles. It treats every file, dependency, interface, and design choice as something that must earn its place with evidence.

In plain words
What is it for?
Use it for large architectural changes, full rewrites, subsystem replacement, or deciding whether a repository should be rebuilt, archived, or left unchanged.
Why use it?
It removes the assumption that existing code should be preserved just because it already exists. It helps decide whether to keep, change, replace, or remove parts of a project when normal maintenance is not enough.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

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

Good fit Use it for large architectural changes, full rewrites, subsystem replacement, or deciding whether a repository should be rebuilt, archived, or left unchanged.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ancplua/ancplua-claude-plugins/nihil
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 nihil
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 nihil

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/ancplua/ancplua-claude-plugins/nihil"><img src="https://agentmods.dev/badge/skills/ancplua/ancplua-claude-plugins/nihil.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,687 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 $0.00121 $0.01687
Opus 5.5 $0.00048 $0.00675
Sonnet 5.5 $0.00024 $0.00337
Haiku 4.5 $0.00012 $0.00169

Measured 16d ago against content hash f61eb802541c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nihil 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/nihil/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nihil: First-Principles Repository Transformation

Nihil is the final escalation path before abandonment, archival, or replacement of a project. Use it only when ordinary review, incremental refactoring, routine remediation, local cleanup, and standard maintenance are insufficient.

Nihil does not mean destroy by default. It means no artifact has intrinsic preservation value:

  • No file is presumed valuable. No abstraction is presumed meaningful. No API is presumed correct.
  • No dependency is presumed justified. No convention is presumed wise. No compatibility promise is presumed absolute.
  • No deletion is presumed safe without evidence. No rewrite is presumed necessary without evidence. No no-op is presumed acceptable without evidence.

Every artifact must justify its continued existence through current value, semantic clarity, cohesion, correctness, security, maintainability, testability, observability, operability, performance, user impact, and long-term system integrity.

The goal is the smallest coherent system that deserves to exist — which may be no change at all.

The five workflows

The pantheon is delivered as dynamic workflows. Run them directly, or let /nihil convene them.

Command God Role
/nihil Zeus orchestrates Establish authority, inspect, convene the council, issue the verdict and transformation plan
/nihil-maat Ma'at verifies Read-only absence-of-value code-quality review; confidence is not evidence
/nihil-odin Odin researches Deep research; familiarity is not knowledge — every claim cross-checked and cited
/nihil-shiva Shiva deletes Dead code, duplication, and over-broad public API; deletion is permitted, never assumed
/nihil-athena Athena restructures Architecture judgment panel; existing architecture is not sacred

Install them with /nihil:summon (copies the scripts into .claude/workflows/). They compose one level deep through the runtime's native workflow().

Read the full file on GitHub · 89 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 · 89 lines · 121 tokens per session scan A f61eb802541c

Subscribe to this mod's changes

nihil is a skill published in the GitHub repository ANcpLua/ancplua-claude-plugins (6 stars, last pushed 5d ago), licensed MIT. It adds 121 tokens to every session and 1,687 once invoked, about $0.0005 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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