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/bettertyped/hype-stack/frontend-testinggit clone --depth 1 https://github.com/BetterTyped/hype-stackWhat 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 | $0.00779 |
| Opus 5 | $0.00000 | $0.00390 |
| Sonnet 5 | $0.00000 | $0.00156 |
| Haiku 4.5 | $0.00000 | $0.00078 |
Grade A, and why
frontend-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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 82 lines · 0 tokens per session scan A 30b572df40c6
frontend-testing is a cursor rule published in the GitHub repository BetterTyped/hype-stack (4 stars, last pushed yesterday), with no licence file. It costs nothing until one of its globs matches a file; then it loads 779 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
database-schema
Database schema conventions and patterns using Drizzle ORM and PostgreSQL.
deployment-devops
Deployment and DevOps guidelines for Docker Compose and Kubernetes.
development-conventions
Development conventions, code style, and best practices for the Kaneo project.
frontend-web
Frontend web development guidelines for React, TanStack Router, and TanStack Query.
backend-api
Backend API development guidelines for Hono, Drizzle ORM, and Better Auth.
project-overview
Overview of the Kaneo project structure, architecture, and key technologies.