design-sandbox AGENTS.md

design-sandbox AGENTS.md is an instructions file for Codex, OpenCode from memi-design/design-sandbox. It costs 306 tokens per session, scanned A, original, MIT.

Repository instructions for a design sandbox that uses a customised version of Next.js, a web framework for building sites and applications.

In plain words
What is it for?
Use them when changing the sandbox, especially to find the target page, follow its component and theme conventions, configure the local MCP tool, and run the proof checks.
Why use it?
They warn coding agents about project-specific differences and point them to the required files, tools, and verification command.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions subagents; mentions AGENTS.md.

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 instructions/memi-design/design-sandbox/agents-md
Clone the repo
git clone --depth 1 https://github.com/memi-design/design-sandbox

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.

agentmods badge for design-sandbox AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/memi-design/design-sandbox/agents-md.svg)](https://agentmods.dev/instructions/memi-design/design-sandbox/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/memi-design/design-sandbox/agents-md"><img src="https://agentmods.dev/badge/instructions/memi-design/design-sandbox/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 306 This file is loaded in full into every session.
When invoked 306 The same file — it is already loaded in full.
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 5.1 $0.00306 $0.00306
Opus 5 $0.00153 $0.00153
Sonnet 5 $0.00061 $0.00061
Haiku 4.5 $0.00031 $0.00031

Measured 5d ago against content hash 6623dc405ca7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

design-sandbox 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 5d 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 · 24 lines

What it actually says

This is NOT the Next.js you know

This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in node_modules/next/dist/docs/ before writing any code. Heed deprecation notices.

design2code.ground

General design sandbox. The full operating manual is .claude/CLAUDE.md.

Quick orientation

  • Scaffold target: src/app/sandbox/page.tsx
  • shadcn-first; theme tokens only; no hex literals
  • Subagents: screenshot-decodercomponent-scaffoldermotion-director
  • Slash command: /sandbox "<idea>" (or paste screenshot then /sandbox)
  • memi MCP available as mcp__memoire__*
  • Proof gate: pnpm verify
  • Pre-publish local proof: MEMI_BIN=../memi/dist/index.js pnpm verify

Pointers for non-Claude tools

  • Codex / Cursor / OpenCode: read this file + .memoire/SOUL.md + .memoire/AGENTS.md
  • The memi CLI/MCP package is @memi-design/[email protected].
  • Use memi mcp config --target generic to verify the no-Figma MCP command before configuring a client.
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. 5d ago First seen · 24 lines · 306 tokens per session scan A 6623dc405ca7

Subscribe to this mod's changes

design-sandbox AGENTS.md is an instructions file published in the GitHub repository memi-design/design-sandbox (7 stars, last pushed 1mo ago), licensed MIT. It adds 306 tokens to every session, about $0.0015 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.