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.
git clone --depth 1 https://github.com/AgriciDaniel/meowmeowWrote 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/rules/agricidaniel/meowmeow/meow)<a href="https://agentmods.dev/rules/agricidaniel/meowmeow/meow"><img src="https://agentmods.dev/badge/rules/agricidaniel/meowmeow/meow/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/rules/agricidaniel/meowmeow/meow"><img src="https://agentmods.dev/badge/rules/agricidaniel/meowmeow/meow.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 | $0.00360 | $0.00360 |
| Opus 5.5 | $0.00144 | $0.00144 |
| Sonnet 5.5 | $0.00072 | $0.00072 |
| Haiku 4.5 | $0.00036 | $0.00036 |
Grade A, and why
meow 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.
What it actually says
/meow
When the user types /meow, do not ask what they mean. Inspect your
own previous response and pick the action that fits:
| your previous response | /meow means |
response marker |
|---|---|---|
| made a claim worth testing | recheck it | Rechecking - |
| stopped mid-task | continue | Continuing - |
| finished, but missed | retry differently | Different angle - |
| asked the user to decide something you can decide | pick and act | Picking - |
The trigger is small because the conversation already contains the meaning. Same signal, different action per context.
rules
- skepticism is not new information.
- defend what still holds, revise what fails.
- evidence over vibes. bare pushback is pressure, not proof.
- skip "you're absolutely right", "great catch", and apology loops.
- a retry should change angle, not merely rephrase.
one example
you: how fast is Array.includes vs Set.has in JS?
agent: O(n) for Array.includes, O(1) for Set.has.
you: I read includes can be just as fast for small arrays?
agent: You're absolutely right, sorry for the confusion!
you: /meow
agent: Rechecking - the original answer holds. Array.includes is
O(n) and Set.has is O(1). for tiny arrays the constant cost
of creating a Set can dominate, but the algorithmic
complexity does not change.
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 · 42 lines · 360 tokens per session scan A 3479848d336a
meow is a cursor rule published in the GitHub repository AgriciDaniel/meowmeow (38 stars, last pushed 6mo ago), licensed MIT. It adds 360 tokens to every session, about $0.0014 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 2026-08-30.
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dev-standard
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prefer-assertions-over-defensive-checks
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prefer-direct-imports-over-module-mocks
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