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oh-my-design: Instructions file for Codex

AGENTS.md

oh-my-design AGENTS.md is an instructions file for Codex, OpenCode from kwakseongjae/oh-my-design. It costs 2,564 tokens per session, scanned A, original, MIT.

Repository instructions for working on the oh-my-design project, including its source layout, generated reference files, and development commands.

In plain words
What is it for?
Use them when changing oh-my-design, especially its TypeScript CLI, design references, installed skills, or agent definitions.
Why use it?
They help an coding agent find the correct files to edit and follow the project's build, test, lint, and design-harness rules.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions subagents; mentions Claude Code.

This is kwakseongjae/oh-my-design's own configuration. It tells Codex and OpenCode how to work on oh-my-design 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 oh-my-design configures →

not rated 497repo +13 changed 7d ago A scan 2,564 tokens original MIT
View source ↗ kwakseongjae/oh-my-design oh-my-design.kr
Reuse

Borrowing it

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

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/kwakseongjae/oh-my-design/agents-md"><img src="https://agentmods.dev/badge/instructions/kwakseongjae/oh-my-design/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,564 This file is loaded in full into every session.
When invoked 2,564 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02564 $0.02564
Opus 5 $0.01282 $0.01282
Sonnet 5 $0.00513 $0.00513
Haiku 4.5 $0.00256 $0.00256

Measured 7d ago against content hash 69c79cf66489, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

oh-my-design 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 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.

AGENTS.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — oh-my-design

This is the agent-instruction shim for OpenAI Codex / generic AGENTS.md-aware CLIs working inside this repository.

oh-my-design itself uses Claude Code skills + subagents for its design harness. This file is the parity layer for Codex users.

Repository quick map

  • src/ — TypeScript source for the omd CLI (bin/oh-my-design.ts is the entrypoint).
  • web/references/<id>/DESIGN.md — 100+ real-company DESIGN.md files; the canonical source of truth for the reference catalog. It lives under web/ because the Vercel project root is web/ (the site build can only read files beneath it). The root references symlink, design-md/, and packages/mcp/data/references/ are all derived from here — see Repository layout in README.md for why each tree exists and which to edit. Rule: edit web/references/ only.
  • skills/omd-* — Claude Code / Codex / OpenCode skill files (installed into target projects via omd install-skills).
  • .claude/agents/ — Subagent definitions for the design harness (Claude Code).
  • .codex/agents/ — Mirror TOML definitions for the design harness (Codex).
  • spec/design-md-core-v2.md — normative vendor-neutral DESIGN.md Core v2 contract.
  • spec/omd-v0.1.md — legacy 15-section import format; dual-read only.
  • research/harness-design/ — Design harness research + integration design.
  • skills/omd-lab-02-design-harness/ — Lab #02 versioned harness experiments.
  • scripts/ctx-prime.cjs — v1.6.0 deterministic codebase analyzer (stack, brand color, voice, surface inventory, audience hypothesis). Called by omd-harness Step 2.5 to pre-fill master slots.

Build / test / lint

  • Build: npm run build (tsup → dist/)
  • Type-check: npm run lint (tsc --noEmit)
  • Unit tests: npm test (vitest)
  • The CLI runs via node dist/bin/oh-my-design.js … after build.

Design harness mode

User-facing entry: /omd-harness <task> in Claude Code or Codex CLI.

The harness runs entirely inside the host CLI session — no external API keys, no separate process. The skill at .agents/skills/omd-harness/ (Codex) or .claude/skills/omd-harness/ (Claude Code) handles bootstrapping and orchestration handoff.

Read the full file on GitHub · 137 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 Changed · +60 tokens per session 69c79cf66489
  2. 11d ago First seen · 137 lines · 2,504 tokens per session scan A e0dafe5b04b7

Subscribe to this mod's changes

oh-my-design AGENTS.md is an instructions file published in the GitHub repository kwakseongjae/oh-my-design (497 stars, last pushed 3d ago), licensed MIT. It adds 2,564 tokens to every session, about $0.0128 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.

clidesign-mddesign-systemdesign-tokensgoogle-stitchnextjs
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