knowledge-layers

A rule for deciding which project information to trust: guidance files explain how to work, code shows what runs, and documentation describes the system.

In plain words
What is it for?
Use it when reading project instructions, checking documentation, or writing rules and skills that depend on the project’s current behavior.
Why use it?
It prevents developers from making decisions from outdated documentation when the documentation and the running code disagree.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/vindm/dotclaude/knowledge-layers
Any agent
npx skills add vindm/dotclaude --skill knowledge-layers
Clone the repo
git clone --depth 1 https://github.com/vindm/dotclaude

Made for: Claude Code, Codex.

Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 952 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00089 $0.00952
Opus 5 $0.00044 $0.00476
Sonnet 5 $0.00018 $0.00190
Haiku 4.5 $0.00009 $0.00095

Measured yesterday against content hash dc79989a49cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

knowledge-layers 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 yesterday.

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/core/skills/knowledge-layers/SKILL.md · 36 lines

How it starts

The opening of the file, as written. The whole thing — 36 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Knowledge layers — authority order

A project has three knowledge layers, and they rank in a fixed authority order. Most doc-trust bugs come from not knowing which one wins when they disagree.

  1. .claude/ (or the project's guidance layer) is GUIDANCE. Rules, skills, invariants, conventions — how to build this project. Intentional, hand-authored, prescriptive. It tells you what discipline to apply; it does not describe what the system currently does.

  2. Code is TRUTH. It is what the system actually does, because it is the thing that runs. For any factual question about real behavior — the actual retry limit, the actual auth check, the actual schema — read code, not a description of code.

  3. docs/ is a REFLECTION of code, plus transient intent. Reflection docs (architecture overviews, flow docs, a capabilities index) are a downstream description of code — a navigable map to find the right code fast, not an authority on what it does. Transient intent (brainstorms, plans) is forward-looking exploration consumed when the work ships, then archived. Neither is authoritative about current behavior.

The rule that follows from the ranking

Derive correctness from code plus the guidance layer. Verify any load-bearing claim against code. When a doc and the code disagree, the code wins — every time, no exceptions. This is not "prefer code"; it is code wins. Hedged language invites you to trust the doc anyway.

The reason: code is executed, so it can't lie for long; a doc is never executed, so it can be wrong indefinitely and look fine. docs/ is downstream of code, so it drifts, and drift is silent. Pointing authority at code is how you stop trusting the layer that rots.

Three consequences for how you work

  • Code → docs, never the reverse. When you change code that a reflection doc describes, update that doc in the same change, or stale-mark it with a "verify against code" note. Correctness flows one direction: code is the source, docs follow. Never edit a reflection doc to declare new behavior and expect code to catch up — that inverts the authority order and manufactures drift. (Specs and plans are transient intent, and may legitimately lead code; a reflection doc must never lead it.)

Read the full file on GitHub · 36 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. yesterday First seen · 36 lines · 89 tokens per session scan A dc79989a49cd

Subscribe to this mod's changes

knowledge-layers is a skill published in the GitHub repository vindm/dotclaude (1 stars, last pushed 5d ago), licensed MIT. It adds 89 tokens to every session and 952 once invoked, about $0.0004 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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