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.
npx agentmods add instructions/hmbown/codewhale/claude-mdgit clone --depth 1 https://github.com/Hmbown/CodeWhaleWrote 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/hmbown/codewhale/claude-md)<a href="https://agentmods.dev/instructions/hmbown/codewhale/claude-md"><img src="https://agentmods.dev/badge/instructions/hmbown/codewhale/claude-md.svg" alt="Measured on agentmods" 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 | $0.00108 | $0.00108 |
| Opus 5 | $0.00054 | $0.00054 |
| Sonnet 5 | $0.00022 | $0.00022 |
| Haiku 4.5 | $0.00011 | $0.00011 |
Grade A, and why
CodeWhale 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 2d 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.
What it actually says
Claude entrypoint
@AGENTS.md
The imported contract is authoritative. Do not invent stricter test or branch rituals: follow its code-first evidence policy, one-way migration rule, clean direct-main permission, and the current task's offline boundary.
Its ponytail decision ladder runs before you write code, every time. Read it there — it is not restated here, because rung 2 is "already in this codebase?" and a second copy of a rule is the thing the rule forbids.
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.
- 2d ago Changed · +4 lines · +53 tokens per session 5111c627e0e4
- 4d ago First seen · 8 lines · 55 tokens per session scan A 303709df7d06
CodeWhale CLAUDE.md is an instructions file published in the GitHub repository Hmbown/CodeWhale (40,889 stars, last pushed 2d ago), licensed MIT. It adds 108 tokens to every session, about $0.0005 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 2026-08-30.
Other instructions, from other repositories
alook AGENTS.md
AGENTS.md instructions for alookai/alook, covering alook, navigation, must, release — unified version bump and e2e ui (browser tests).
zot AGENTS.md
AGENTS.md instructions for patriceckhart/zot, covering working agreement for zot, product intent, starting a task, code ownership map and correctness contracts.
Tianshu-harness CLAUDE.md
Claude Code instructions for huiliyi37/Tianshu-harness, covering 天枢 (tianshu) / rivet, build & test, architecture, conventions and known constraints.
alook CLAUDE.md
Claude Code instructions for alookai/alook, a project described as: Rooms for people and agents.
claudectl CLAUDE.md
Instructions for mercurialsolo/claudectl, covering claudectl, build & test, architecture, workspace layout and core modules — claudectl-core (crates/claudectl-core/src/).
claudectl AGENTS.md
Instructions for mercurialsolo/claudectl, covering claudectl, what claudectl does, integration points, key differentiators vs. similar tools and build & test.