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 rules/kleosr/kleosrules/testinggit clone --depth 1 https://github.com/kleosr/kleosrulesWhat 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 | $0.00000 | $0.00165 |
| Opus 5 | $0.00000 | $0.00082 |
| Sonnet 5 | $0.00000 | $0.00033 |
| Haiku 4.5 | $0.00000 | $0.00016 |
Grade A, and why
testing 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 yesterday.
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
TESTING (THIN)
Cero bloat en tests. Public surface only. Native tools (Read/Grep/Write/StrReplace).
House gauntlet first (TOOLCHAIN). Run verify yourself. Fail closed on red. Cite evidence.
Bug fix ships regression: <symptom>. Flaky = broken.
PROCEDURE
TDD order, mocks, gauntlet workflows:
Read ~/.cursor/skills/testing/SKILL.md before writing or expanding tests.
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.
- yesterday First seen · 16 lines · 0 tokens per session scan A b435f6430a8b
testing is a cursor rule published in the GitHub repository kleosr/kleosrules (2 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 165 tokens. 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 cursor rules, from other repositories
nextjs
Rules for Next.js projects (App Router and Pages Router).
java-kotlin
Rules applied when working in Java or Kotlin files (incl. Android).
php
Rules applied when working in PHP files (incl. Laravel, Symfony, WordPress).
vue
Rules for Vue (2 and 3) single-file components.
cursorrules
40 lines, or explicitly requested.
shell
Rules for shell scripts (bash, zsh, sh, PowerShell).