atelier-mcp: Instructions file for Claude Code

CLAUDE.md

atelier-mcp CLAUDE.md is an instructions file for Claude Code from anshrajore/atelier-mcp. It costs 492 tokens per session, scanned A, a copy of atelier-mcp copilot-instructions.md, MIT.

A Claude Code instruction file that sets Atelier's shared rules for generating project code, covering interface design, backend architecture, and framework presets.

In plain words
What is it for?
Use it to apply Atelier's spacing, typography, contrast, layout-focus, credential-handling, and other project rules when building or changing code.
Why use it?
It gives Claude Code a consistent quality checklist so generated changes follow the project's conventions.

Instructions file for Claude Code

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

This is anshrajore/atelier-mcp's own configuration. It tells Claude Code how to work on atelier-mcp 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 atelier-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to anshrajore/atelier-mcp. 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/anshrajore/atelier-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/anshrajore/atelier-mcp

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.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/anshrajore/atelier-mcp/claude-md.svg)](https://agentmods.dev/instructions/anshrajore/atelier-mcp/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/anshrajore/atelier-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/anshrajore/atelier-mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 492 This file is loaded in full into every session.
When invoked 492 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 94% copy Near-identical to another mod 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 $0.00492 $0.00492
Opus 5 $0.00246 $0.00246
Sonnet 5 $0.00098 $0.00098
Haiku 4.5 $0.00049 $0.00049

Measured 7d ago against content hash 4c0b28b7e867, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

atelier-mcp 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 7d 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.

Origin

This is a copy

94% identical to atelier-mcp copilot-instructions.md — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CLAUDE.md · 24 lines

How it starts

The opening of the file, as written. The whole thing — 24 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Atelier Quality Gate Adapter for Claude Code (CLAUDE.md)

GENERATED FROM skills/atelier/SKILL.md — DO NOT EDIT DIRECTLY.

Run npm run sync-adapters to update.

You must strictly obey the Atelier post-generation quality gate rules for all code generation:

UNIVERSAL UI/UX RULES

  • BASE-UI-101: All layout margins, paddings, and container gaps must strictly conform to an 8px harmonic grid (subgrid: 4px).
  • BASE-UI-102: Font sizes must derive from a standardized modular scale, with negative tracking on display text (>=24px) and wide tracking on micro-labels (<=12px uppercase).
  • BASE-UI-103: Body text and interactive icons must maintain a minimum contrast ratio of 4.5:1 against their rendered background (3.0:1 for text >= 24px).
  • BASE-UI-104: A single screen or viewport state must contain exactly one primary high-emphasis call-to-action (CTA) or focal headline.
  • BASE-UI-105: Visual surfaces must enforce a hard ceiling on decorative elements (gradients, drop shadows, decorative animations) per view to eliminate visual clutter.

UNIVERSAL BACKEND ARCHITECTURE RULES

  • BASE-BE-201: Source code and configuration files must contain zero plaintext credentials, API tokens, or fallback defaults.
  • BASE-BE-202: All external input boundaries (HTTP request body, query parameters, URL path parameters, webhook payloads) must parse through a typed schema validator before business logic execution.
  • BASE-BE-203: Application error handlers must map exceptions to standard HTTP error codes and must never expose internal system stack traces, database schema details, or raw driver errors to clients.
  • BASE-BE-204: Every branching condition, pipeline node, and asynchronous promise must resolve to an explicit terminal response, error handler, or dead-letter logger.
  • BASE-BE-205: All public entry points and outgoing third-party network requests must define explicit timeout caps and rate limiting middleware.

FRAMEWORK PRESETS (Available in skills/atelier/presets/)

  • Next.js + Tailwind: skills/atelier/presets/nextjs-tailwind.md (17 gradeable rules)
  • n8n Workflows: skills/atelier/presets/n8n.md (13 gradeable rules)

Read the full file on GitHub · 24 lines

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. 7d ago First seen · 24 lines · 492 tokens per session scan A 4c0b28b7e867

Subscribe to this mod's changes

atelier-mcp CLAUDE.md is an instructions file published in the GitHub repository anshrajore/atelier-mcp (0 stars, last pushed 20d ago), licensed MIT. It adds 492 tokens to every session, about $0.0025 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to atelier-mcp copilot-instructions.md, differing in 2 lines, and is treated as a copy.

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