What is marmoui AGENTS.md?

Project memory for Marmo UI, a React and Next.js design-system project with reusable interface components. It documents the technology stack and where components, documentation, generated data, and related tools live.

Adding or editing UI components, component documentation, generated props data, the command-line tool, and related project code.

It gives coding agents the project context and file locations needed to make UI changes correctly. It also identifies which files are source files and which are generated.

How mahmoudilyan/marmoui configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to mahmoudilyan/marmoui. 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/mahmoudilyan/marmoui/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/mahmoudilyan/marmoui

Made for: Codex, OpenCode.

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/mahmoudilyan/marmoui/agents-md/github.svg)](https://agentmods.dev/instructions/mahmoudilyan/marmoui/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/mahmoudilyan/marmoui/agents-md"><img src="https://agentmods.dev/badge/instructions/mahmoudilyan/marmoui/agents-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/mahmoudilyan/marmoui/agents-md"><img src="https://agentmods.dev/badge/instructions/mahmoudilyan/marmoui/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 961 This file is loaded in full into every session.

When invoked 961 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	$0.00961	$0.00961
Opus 5	$0.00481	$0.00481
Sonnet 5	$0.00192	$0.00192
Haiku 4.5	$0.00096	$0.00096

Measured 9d ago against content hash df6d3114d84a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

marmoui AGENTS.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 9d 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.

AGENTS.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Marmo UI — Agent Project Memory

Auto-loaded by Codex, Cursor, Gemini, and other agents for sessions in this repo. Same conventions as CLAUDE.md.

Stack

React 19, Next.js 16 (App Router), TypeScript, Tailwind CSS 4.
UI library: @marmoui/ui — published to the public npm registry (MIT).
Icons: user-selected library, default @phosphor-icons/react. Also supported: react-icons/md, lucide-react, @tabler/icons-react, @heroicons/react, react-icons/fi.
Tables: TanStack Table v8 (via DataTable from @marmoui/ui).
State: Zustand for shared client state.
Tooling: pnpm workspaces, Turborepo, Changesets (semver), husky + commitlint (Conventional Commits).

Where things live

What	Where
Component source	packages/ui/src/components/
Component docs (MDX)	apps/design-system-docs/content/components/
Generated props JSON	apps/design-system-docs/src/data/component-props.json
`marmoui` CLI (`npx marmoui init`)	packages/cli/
Claude Code plugin + marketplace	tools/claude-plugin/

The MCP server, composition patterns, and platform services live in a separate private repository and are consumed here only through the hosted MCP and the published npm package.

Source of truth

The Marmo UI MCP (https://mcp.marmoui.com/mcp — connect via npx marmoui init) is the single source of truth for component APIs, props, patterns, and generation rules.

Never guess prop names, variants, imports, or composition shapes. If you didn't get it from the MCP, you don't know it.

Required workflow for UI code

Verify freshness. get_knowledge_version once per session.
Read the rules. get_design_guidelines once per session.
Find the right primitive. Known multi-component layout → get_pattern; otherwise search_components + get_component_info.
Write the code. Imports only from @marmoui/ui and the chosen icon library.
Validate. review_generated_code on the final output; fix every error and warning before reporting done.

Read the full file on GitHub · 58 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.

9d ago First seen · 58 lines · 961 tokens per session scan A df6d3114d84a

Subscribe to this mod's changes

marmoui AGENTS.md is an instructions file published in the GitHub repository mahmoudilyan/marmoui (41 stars, last pushed 1mo ago), licensed MIT. It adds 961 tokens to every session, about $0.0048 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 2026-08-30.

Design and UX Frontend React ai-agents claude components design-system mcp

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

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 · 6,785 tokens

marmoui: Instructions file for Codex