OpenDesign is an open-source, local-first desktop app that lets coding agents create prototypes, dashboards, slide decks, images, video, and design systems as exportable files. It is used by people working with agent runtimes such as Claude Code, Codex, Cursor, and DeepSeek Harness. The catalogue add-ons extend the OpenDesign workflow with skills, instructions, commands, and plugins.
Borrowing it
Nothing to install: this file belongs to nexu-io/open-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.
curl -O https://raw.githubusercontent.com/nexu-io/open-design/main/AGENTS.mdgit clone --depth 1 https://github.com/nexu-io/open-designWrote 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.
[](https://agentmods.dev/instructions/nexu-io/open-design/agents-md)<a href="https://agentmods.dev/instructions/nexu-io/open-design/agents-md"><img src="https://agentmods.dev/badge/instructions/nexu-io/open-design/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.
<a href="https://agentmods.dev/instructions/nexu-io/open-design/agents-md"><img src="https://agentmods.dev/badge/instructions/nexu-io/open-design/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.13362 | $0.13362 |
| Opus 5.5 | $0.05345 | $0.05345 |
| Sonnet 5.5 | $0.02672 | $0.02672 |
| Haiku 4.5 | $0.01336 | $0.01336 |
Grade A, and why
open-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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 505 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Directory guide
This file is the single source of truth for agents entering this repository. Read this file first; after entering apps/, packages/, tools/, or e2e/, read that layer's AGENTS.md for module-level details. Do not copy module details back into the root file; root stays focused on cross-repository boundaries, workflow, and commands.
Core documentation index
- Product and onboarding:
README.md,docs/i18n/README.zh-CN.md,QUICKSTART.md. - Contribution and environment:
CONTRIBUTING.md,docs/i18n/CONTRIBUTING.zh-CN.md. - Architecture and protocols:
docs/architecture.md,docs/skills-protocol.md,docs/agent-adapters.md,docs/modes.md. - Historical product baseline:
docs/spec.md,docs/roadmap.md(both explicitly archived; do not treat their dated decisions as current behavior). - References and current plans:
docs/references.md,docs/code-review-guidelines.md,specs/current/maintainability-roadmap.md,specs/current/ci.md(CI scope confidence methodology — required before changing planner confidence, routing, or omission policy in.github/config/scopes.jsonand.github/scripts/scopes.py),specs/current/chat-panel-next.md(ChatPanel 重构:基线、任务进度规格、决策记录、踩过的坑 — 改 chat 渲染管线/工具调用展示/执行记录前必读),specs/current/chat-panel-next-plan.md(交付计划与纠偏节点). - Directory-level agent guidance:
.github/AGENTS.md,apps/AGENTS.md,packages/AGENTS.md,tools/AGENTS.md,e2e/AGENTS.md,apps/web/src/components/chat/AGENTS.md(chat 组件分层、--chat-*样式接缝、降级形态与测试规约). - Packaged auto-update architecture and high-confidence local harness: read
tools/pack/AGENTS.mdsection "Packaged auto-update architecture and harness" before touching packaged updater code, release-channel identity, installer behavior, or updater UI. - Packaged build cache contract:
tools/pack/CACHE.md(determinant rules, materialization-time parameters, confidence grading — required before changing any build-cache node key). - Prompt composition has two independent implementations behind a rollout switch:
docs/prompt-composition.md(fork point, variant axes, host runtime contract table, worked examples — required before changing any prompt text, inapps/daemon/src/prompts/,packages/contracts/src/prompts/, or underplugins/_official/scenarios/od-next-strategy/). See "Prompt variants" below.
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.
- yesterday Changed · +8 lines · +200 tokens per session 9584b9dc7d86
- 17d ago Changed · +15 lines · +228 tokens per session 74c46d533901
- 24d ago Changed · +6 lines · +81 tokens per session 30ec35472ada
- 1mo ago Changed · +111 tokens per session 39266e6a558c
- 1mo ago Changed · +21 lines · +2,461 tokens per session b65f5471e34f
- 2mo ago Changed · -1 lines · -30 tokens per session e558726c4eea
- 2mo ago Changed · +11 lines · +489 tokens per session e758417ca48d
- 2mo ago First seen · 445 lines · 9,822 tokens per session scan A 0edc1b1f6f37
open-design AGENTS.md is an instructions file published in the GitHub repository nexu-io/open-design (106,125 stars, last pushed today), licensed Apache-2.0. It adds 13,362 tokens to every session, about $0.0534 per session on Opus 5.5. 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.
open-design AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| open-design AGENTS.mdnexu-io/open-design | Instructions file | 106k | today | Apache-2.0 | A | 13,362 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |