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/slopus/happy/cursorrulesgit clone --depth 1 https://github.com/slopus/happyWhat 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 | $0.00004 | $0.00004 |
| Opus 5 | $0.00002 | $0.00002 |
| Sonnet 5 | $0.00001 | $0.00001 |
| Haiku 4.5 | $0.00000 | $0.00000 |
Grade A, and why
cursorrules 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.
Copies of this mod
8 near-identical copies found in the catalogue:
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
- cursorrules — 100% identical, 0 lines differ
- cursorrules — 100% identical, 0 lines differ
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
- use-bun-instead-of-node-vite-npm-pnpm — 100% identical, 2 lines differ
What it actually says
CLAUDE.md
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 · 1 lines · 4 tokens per session scan A 6ebdb617a810
cursorrules is a cursor rule published in the GitHub repository slopus/happy (23,553 stars, last pushed 4d ago), licensed MIT. It adds 4 tokens to every session, about $0.0000 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 cursor rules, from other repositories
telegram-bot-api
API actions, features, and options for Telegram Bot library.
telegram-bot-types
Options, types, and serialization for Telegram Bot library.
telegram-bot-handling
Activity, WizardActivity, functional DSL vs annotation approach, and update handling pipeline.
ktnip-ksp-processor
KSP processor architecture, collectors, and codegen for ktnip.
swift-development
Swift development: SwiftUI, Combine, async/await, iOS patterns, and Apple platform conventions.
project-onboarding-rule
Automatically onboards existing projects into the AI-driven development workflow.