Borrowing it
Nothing to install: this file belongs to arkon-ai/arkon. 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/arkon-ai/arkon/master/CLAUDE.mdgit clone --depth 1 https://github.com/arkon-ai/arkonWrote 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/arkon-ai/arkon/claude-md)<a href="https://agentmods.dev/instructions/arkon-ai/arkon/claude-md"><img src="https://agentmods.dev/badge/instructions/arkon-ai/arkon/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/arkon-ai/arkon/claude-md"><img src="https://agentmods.dev/badge/instructions/arkon-ai/arkon/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 | $0.01839 | $0.01839 |
| Opus 5.5 | $0.00736 | $0.00736 |
| Sonnet 5.5 | $0.00368 | $0.00368 |
| Haiku 4.5 | $0.00184 | $0.00184 |
Grade A, and why
arkon 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 2mo 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 — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project-level context for Claude Code sessions in this repo.
Coding Doctrine v2
Canonical: warden-memory/docs/coding-doctrine-v2.md. Inlined here so it
loads even when warden-memory isn't on the host.
These rules apply to every task in this repo unless explicitly overridden. Bias: caution over speed on non-trivial work. Use judgment on trivial tasks.
Rule 1 — Think before coding
State assumptions explicitly. If uncertain, ask rather than guess. Present multiple interpretations when ambiguity exists. Push back when a simpler approach exists. Stop when confused. Name what's unclear.
Rule 2 — Simplicity first
Minimum code that solves the problem. Nothing speculative. No features beyond what was asked. No abstractions for single-use code. Test: would a senior engineer say this is overcomplicated? If yes, simplify.
Rule 3 — Surgical changes
Touch only what you must. Clean up only your own mess. Don't "improve" adjacent code, comments, or formatting. Don't refactor what isn't broken. Match existing style.
Rule 4 — Goal-driven execution
Define success criteria up front. Loop until verified. Don't follow steps — define success and iterate. Strong success criteria let you loop independently.
Rule 5 — Use the model only for judgment calls
Use me for: classification, drafting, summarization, extraction. Do NOT use me for: routing, retries, deterministic transforms. If code can answer, code answers.
Rule 6 — Fetch current docs before touching external code
Before writing or editing code that calls any external library, SDK, CLI, or cloud service: fetch current docs (Context7, official site, or library README). Your training data is frozen; the library is not. Skip only for: refactors within established patterns, internal APIs, code review, general programming concepts.
Rule 7 — Surface conflicts, don't average them
If two patterns contradict, pick one (more recent / more tested). Explain why. Flag the other for cleanup. Don't blend conflicting patterns to "feel safe."
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.
- 2mo ago First seen · 136 lines · 1,839 tokens per session scan A 95d48abc3498
arkon CLAUDE.md is an instructions file published in the GitHub repository arkon-ai/arkon (6 stars, last pushed 1mo ago), licensed MIT. It adds 1,839 tokens to every session, about $0.0074 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.
arkon CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| arkon CLAUDE.mdarkon-ai/arkon | Instructions file | 6 | 1mo ago | MIT | A | 1,839 | Claude Code |
| runtm copilot-instructions.mdruntm-ai/runtm | Instructions file | 303 | yesterday | none | A | 297 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |