frontend-react

frontend-react is a cursor rule for coding agents from p-to-q/repo-template. It costs 8 tokens per session (135 once invoked), scanned A, original, Apache-2.0.

A set of coding guidelines for React and TypeScript frontends. React is a tool for building user interfaces, while TypeScript adds type checking to JavaScript.

In plain words
What is it for?
Writing or reviewing React components, hooks, state transitions, props, types, and frontend business logic.
Why use it?
It helps keep frontend changes consistent with the existing codebase and avoids unnecessary complexity. It also protects existing interface behavior unless a change is required.

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/p-to-q/repo-template/frontend-react
Clone the repo
git clone --depth 1 https://github.com/p-to-q/repo-template

Wrote 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.

agentmods badge for frontend-react

README.md
[![agentmods](https://agentmods.dev/badge/rules/p-to-q/repo-template/frontend-react.svg)](https://agentmods.dev/rules/p-to-q/repo-template/frontend-react)
Your own site
<a href="https://agentmods.dev/rules/p-to-q/repo-template/frontend-react"><img src="https://agentmods.dev/badge/rules/p-to-q/repo-template/frontend-react.svg" alt="Measured on agentmods" height="20"></a>
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 135 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00008 $0.00135
Opus 5 $0.00004 $0.00068
Sonnet 5 $0.00002 $0.00027
Haiku 4.5 $0.00001 $0.00014

Measured 3d ago against content hash df07551a6b7a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-react 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 3d 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.

optional/agent-rules/cursor/stacks/frontend-react.mdc · 19 lines

What it actually says

Frontend React Stack Rule

For React/TypeScript frontend code:

  • Prefer existing component and hook patterns already used in the codebase.
  • Keep components focused and readable.
  • Keep business logic out of presentational components where practical.
  • Avoid deeply nested JSX when structure can be simplified.
  • Prefer explicit props and readable state transitions.
  • Reuse existing utilities and hooks before creating new ones.
  • Do not introduce state abstractions or custom hooks unless they reduce real local complexity.
  • Preserve existing UI behavior unless change is required.
  • Keep type definitions readable and intention-revealing.
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. 3d ago First seen · 19 lines · 8 tokens per session scan A df07551a6b7a

Subscribe to this mod's changes

frontend-react is a cursor rule published in the GitHub repository p-to-q/repo-template (2 stars, last pushed 27d ago), licensed Apache-2.0. It adds 8 tokens to every session and 135 once invoked, 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 2026-08-31.