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react-starter-kit: Instructions file for Claude Code

CLAUDE.md

react-starter-kit CLAUDE.md is an instructions file for Claude Code from kriasoft/react-starter-kit. It costs 57 tokens per session, scanned A, original, MIT.

Project-specific instructions for a React starter kit, a prebuilt foundation for web applications. The project uses Bun, TypeScript, Tailwind CSS, tRPC, Stripe, Cloudflare Workers, and a monorepo, which is one repository containing multiple related packages or applications.

In plain words
What is it for?
Use it when changing the kriasoft/react-starter-kit project, especially for multi-file or architectural work where the project’s instructions and existing commands should guide the implementation.
Why use it?
It gives an agent the repository’s preferred workflow and points it to the main project guidance before making changes. This helps keep work consistent with the existing setup.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions AGENTS.md.

This is kriasoft/react-starter-kit's own configuration. It tells Claude Code how to work on react-starter-kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything react-starter-kit configures →

not rated 24krepo +3 4d ago A scan 57 tokens original MIT
View source ↗ kriasoft/react-starter-kit reactstarter.com
About the project

React Starter Kit is a full-stack monorepo template for building SaaS web applications with React, TypeScript, tRPC, and Cloudflare Workers. A monorepo keeps related applications and packages in one repository, while the template provides frontend, backend, authentication, billing, database, and development-tool foundations. The catalogue instructions, skills, and command help developers work with this starter kit.

kriasoft/react-starter-kit · 23,707 stars · on GitHub · reactstarter.com

Reuse

Borrowing it

Nothing to install: this file belongs to kriasoft/react-starter-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/kriasoft/react-starter-kit/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/kriasoft/react-starter-kit

Made for: Claude Code.

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 react-starter-kit CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/kriasoft/react-starter-kit/claude-md/github.svg)](https://agentmods.dev/instructions/kriasoft/react-starter-kit/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/kriasoft/react-starter-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/kriasoft/react-starter-kit/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for react-starter-kit CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/kriasoft/react-starter-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/kriasoft/react-starter-kit/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 This file is loaded in full into every session.
When invoked 57 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00057 $0.00057
Opus 5.5 $0.00023 $0.00023
Sonnet 5.5 $0.00011 $0.00011
Haiku 4.5 $0.00006 $0.00006

Measured 2mo ago against content hash f52cc9e6e79e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

react-starter-kit CLAUDE.md 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 2mo 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.

CLAUDE.md · 8 lines

What it actually says

@AGENTS.md

Claude-Specific Guidance

  • Use Plan mode for multi-file or architectural changes.
  • Prefer an existing project skill or command over improvising the same workflow.
  • See "Agent Tooling" in AGENTS.md before adding a command or skill.
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. 2mo ago First seen · 8 lines · 57 tokens per session scan A f52cc9e6e79e

Subscribe to this mod's changes

react-starter-kit CLAUDE.md is an instructions file published in the GitHub repository kriasoft/react-starter-kit (23,707 stars, last pushed 4d ago), licensed MIT. It adds 57 tokens to every session, about $0.0002 per session on Opus 5.5. 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.

ReactTypeScriptboilerplatenodejsstarter-kittemplate
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