What is claude-code-starter CLAUDE.md?

Project instructions for a Claude Code starter repository, covering its project description, development principles, technology setup, commands, and coding conventions.

Use them when developing this starter project, including following its framework, database, testing, styling, dark-mode, environment-variable, and commit guidelines.

They give an agent a shared set of expectations for making changes, testing them, handling secrets, and committing work.

How manthanpatelll/claude-code-starter configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to manthanpatelll/claude-code-starter. 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/manthanpatelll/claude-code-starter/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/manthanpatelll/claude-code-starter

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/manthanpatelll/claude-code-starter/claude-md/github.svg)](https://agentmods.dev/instructions/manthanpatelll/claude-code-starter/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/manthanpatelll/claude-code-starter/claude-md"><img src="https://agentmods.dev/badge/instructions/manthanpatelll/claude-code-starter/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/manthanpatelll/claude-code-starter/claude-md"><img src="https://agentmods.dev/badge/instructions/manthanpatelll/claude-code-starter/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 394 This file is loaded in full into every session.

When invoked 394 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.

Model	Per session	Once invoked
Fable 5.1	$0.00394	$0.00394
Opus 5.5	$0.00158	$0.00158
Sonnet 5.5	$0.00079	$0.00079
Haiku 4.5	$0.00039	$0.00039

Measured 1mo ago against content hash a1f68f899262, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-code-starter 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 1mo 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 · 54 lines

What it actually says

CLAUDE.md

This file is loaded into every Claude Code session. It is your project's rulebook. Keep it short (under ~200 lines) and dense. Replace the placeholders below with your own project's details.

Project

One-line description of what this app does. Domain / production URL goes here.

Principles

Production-ready from day one. No placeholders, no TODOs left behind.
Follow the existing patterns in the codebase. Read before you write.
One change at a time. Show it working before moving on.

Tech stack

Framework: (e.g. Next.js / your framework)
Language: (e.g. TypeScript strict)
Styling / UI: (e.g. Tailwind + your component library)
Backend / data: (your database + services)
Testing: (your unit + e2e tools)

Commands

npm run dev      # start the dev server
npm run build    # production build
npm run lint     # linter
npm test         # tests

Conventions

Icons: pick ONE icon library and stick to it.
Dark mode and light mode must both work.
Never commit secrets. They live in .env.local (gitignored).
Commit format: PROJ-XXX: short description. Commit after every change.

Rules that load on demand

Path-scoped rules live in .claude/rules/. They only load when Claude touches a matching file, so this CLAUDE.md stays lean:

rules/api.md loads for app/api/**

Hard rules

IMPORTANT: never push to main without an explicit ask. Branch first.
IMPORTANT: when asked to deploy, the pre-deploy guard runs your tests first and blocks the deploy if anything is red. Fix tests before shipping.

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.

1mo ago First seen · 54 lines · 394 tokens per session scan A a1f68f899262

Subscribe to this mod's changes

claude-code-starter CLAUDE.md is an instructions file published in the GitHub repository manthanpatelll/claude-code-starter (21 stars, last pushed 5mo ago), licensed MIT. It adds 394 tokens to every session, about $0.0016 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.

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

claude-code-starter: Instructions file for Claude Code