bark

A small Cursor rule for testing whether rules in a subfolder are visible and active.

In plain words
What is it for?
Use it to test rule visibility by saying “jump”.
Why use it?
It provides a distinctive response that shows whether the rule was discovered when a specific word is used.

Cursor rule

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 rules/circleci-petri/rule-tool/bark
Clone the repo
git clone --depth 1 https://github.com/circleci-petri/rule-tool
Per session 62 This file is loaded in full into every session.
When invoked 62 The same file — it is already loaded in full.
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 $0.00062 $0.00062
Opus 5 $0.00031 $0.00031
Sonnet 5 $0.00012 $0.00012
Haiku 4.5 $0.00006 $0.00006

Measured 2d ago against content hash 474178852667, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bark 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.

rules/a-test-rule-sub-folder/bark.mdc · 12 lines

What it actually says

Cursor Rule Visibilty Test

This rule is embedded in a sub folder to test cursor rule visibility

Rule

If I say jump you please shows a dog emoji and Bark 3 Times.

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. 2d ago First seen · 12 lines · 62 tokens per session scan A 474178852667

Subscribe to this mod's changes

bark is a cursor rule published in the GitHub repository circleci-petri/rule-tool (9 stars, last pushed 1y ago), licensed Apache-2.0. It adds 62 tokens to every session, about $0.0003 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.