design-md-generator: Instructions file for Codex

AGENTS.md

design-md-generator AGENTS.md is an instructions file for Codex, OpenCode from jasonhnd/design-md-generator. It costs 460 tokens per session, scanned A, a copy of design-md-generator copilot-instructions.md, MIT.

A set of instructions for extracting a website’s visual design details, writing them into a DESIGN.md file, checking the result, and generating reports and proof images.

In plain words
What is it for?
Use it when matching a website’s look, building a similar interface, or creating and validating a DESIGN.md file.
Why use it?
It gives an agent a complete, repeatable process for turning a website’s visual style into documented design guidance without stopping between steps.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is jasonhnd/design-md-generator's own configuration. It tells Codex and OpenCode how to work on design-md-generator 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 design-md-generator configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jasonhnd/design-md-generator. 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/jasonhnd/design-md-generator/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jasonhnd/design-md-generator

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-md-generator AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jasonhnd/design-md-generator/agents-md/github.svg)](https://agentmods.dev/instructions/jasonhnd/design-md-generator/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/jasonhnd/design-md-generator/agents-md"><img src="https://agentmods.dev/badge/instructions/jasonhnd/design-md-generator/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.

agentmods 80×15 button for design-md-generator AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/jasonhnd/design-md-generator/agents-md"><img src="https://agentmods.dev/badge/instructions/jasonhnd/design-md-generator/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 460 This file is loaded in full into every session.
When invoked 460 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 100% 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 $0.00460 $0.00460
Opus 5.5 $0.00184 $0.00184
Sonnet 5.5 $0.00092 $0.00092
Haiku 4.5 $0.00046 $0.00046

Measured 2mo ago against content hash 66c061b571b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

design-md-generator 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 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.

Origin

This is a copy

100% identical to design-md-generator copilot-instructions.md — 0 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.

AGENTS.md · 48 lines

What it actually says

Design MD Generator

You have access to a design system extraction tool. When the user asks you to match a website's visual style, build UI that looks like a specific site, or create a DESIGN.md:

Run the full pipeline without stopping. Do not ask "should I proceed?" between steps.

Full Pipeline (one command flow)

# 1. Extract design tokens
cd /path/to/dmdg && npx ts-node scripts/extract.ts <URL>

# 2. [YOU] Read tokens.json + screenshots, write DESIGN.md following SKILL.md spec
#    Write all 9 sections without pausing. Self-audit. Fix issues.

# 3. Validate
cd /path/to/dmdg && npx ts-node scripts/validate.ts output/<domain>/DESIGN.md output/<domain>/tokens.json

# 4. Generate report + proof
cd /path/to/dmdg && npx ts-node scripts/preview-gen.ts output/<domain>/tokens.json output/<domain>/
cd /path/to/dmdg && npx ts-node scripts/proof.ts <URL> output/<domain>/tokens.json output/<domain>/
cd /path/to/dmdg && npx ts-node scripts/report-gen.ts output/<domain>/tokens.json output/<domain>/ output/<domain>/DESIGN.md

# 5. Open report for user
open output/<domain>/report.html

Using an Existing DESIGN.md

If a DESIGN.md already exists in the project:

  1. Read it completely before writing any UI code
  2. Use ONLY the colors, fonts, sizes, and shadows specified in it
  3. Do NOT invent values not present in the document
  4. Follow Section 9 (Agent Prompt Guide) for quick reference

Critical Rules

  • ALL numerical values MUST come from tokens.json — never hallucinate
  • 6-digit lowercase hex (#ffffff, not #FFF)
  • Numeric font weights (400, 700) not words (bold)
  • Do not stop between steps to ask for confirmation
  • Present only the final result

Full Specification

See SKILL.md for the complete 21-step workflow, format spec, writing style guide, and quality checklist.

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 · 48 lines · 460 tokens per session scan A 66c061b571b7

Subscribe to this mod's changes

design-md-generator AGENTS.md is an instructions file published in the GitHub repository jasonhnd/design-md-generator (17 stars, last pushed 6mo ago), licensed MIT. It adds 460 tokens to every session, about $0.0018 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to design-md-generator copilot-instructions.md, differing in 0 lines, and is treated as a copy.

Related

design-md-generator AGENTS.md compared with instructions from other repositories

design-md-generator AGENTS.md next to 6 instructions from other repositories
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design-md-generator AGENTS.mdjasonhnd/design-md-generatorInstructions file176mo agoMITA460Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode