Borrowing it
Nothing to install: this file belongs to draugr-dev/draugr. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/draugr-dev/draugr/main/CLAUDE.mdgit clone --depth 1 https://github.com/draugr-dev/draugrWrote 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.
[](https://agentmods.dev/instructions/draugr-dev/draugr/claude-md)<a href="https://agentmods.dev/instructions/draugr-dev/draugr/claude-md"><img src="https://agentmods.dev/badge/instructions/draugr-dev/draugr/claude-md/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.
<a href="https://agentmods.dev/instructions/draugr-dev/draugr/claude-md"><img src="https://agentmods.dev/badge/instructions/draugr-dev/draugr/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.03078 | $0.03078 |
| Opus 5.5 | $0.01231 | $0.01231 |
| Sonnet 5.5 | $0.00616 | $0.00616 |
| Haiku 4.5 | $0.00308 | $0.00308 |
Grade A, and why
draugr CLAUDE.md 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Working on Draugr
Orientation for AI coding assistants, and a reasonable first read for humans too. CONTRIBUTING.md has the mechanics; this file is the why behind them, which is what keeps them from being applied mechanically.
What Draugr is
A security and compliance qualification tool. You describe your application in a declarative descriptor, the Saga, and Draugr infers which checks apply, runs them, normalizes every result to one schema, and returns a deterministic gated verdict with evidence.
The shape of a run, which is also the shape of the code:
Saga → controllers → scanners → SARIF → Norn → verdict + evidence
(what applies) (run a tool) (one schema) (policy)
- Controllers decide what to check for a component and aggregate the results.
- Scanners run an external tool (Trivy, Semgrep, Gitleaks, Nuclei, Syft…) and normalize its output.
- SARIF 2.1.0 is the finding currency. Everything converges on it before anything is judged.
- The Norn applies policy, thresholds, priorities, suppressions, and produces the verdict.
Layout
pkg/ is the public API; treat changes there as breaking until proven otherwise. internal/ is
implementation and can move freely.
| Package | What lives there |
|---|---|
pkg/saga |
The descriptor: repositories, images, hosts, config, exclusions |
pkg/plugin |
The extension SDK, Scanner, Controller, Surveyor, and shared types |
pkg/sarif |
The finding model, plus merge and deduplication |
pkg/engine |
Expands a Saga into scan jobs and orchestrates the run |
pkg/norn |
Evaluates results against policy to produce a verdict |
pkg/report |
Renders a result: console, markdown, HTML, JUnit, JSON, SARIF |
internal/controllers, internal/scanners |
The built-in controls and the tools behind them |
internal/builtins |
Where both get registered |
A new control is a controller plus a scanner, registered in internal/builtins. Copy the shape of
an existing pair, sca + trivy-fs for a repository tool, images + trivy for one that scans a
named artifact.
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.
- 11d ago Changed · +1 lines · +16 tokens per session 1d5ad96e55e7
- 1mo ago Changed · +13 lines · +264 tokens per session 46482cfdfec8
- 1mo ago Changed · -9 tokens per session 5f97674280c1
- 1mo ago First seen · 214 lines · 2,807 tokens per session scan A 289aabe97ac7
draugr CLAUDE.md is an instructions file published in the GitHub repository draugr-dev/draugr (8 stars, last pushed today), licensed Apache-2.0. It adds 3,078 tokens to every session, about $0.0123 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.