open-design

A local-first design application made available to coding agents through MCP, a way for software tools to exchange structured commands and data. It gives agents access to OpenDesign projects, files, and skills through a local process.

In plain words
What is it for?
Use it when an agent needs to access OpenDesign projects, files, previews, or design-related skills.
Why use it?
It lets an agent work with design-project data and related files from the developer's own machine. The local setup keeps the app reachable through the installed OpenDesign daemon.

Plugin for Claude Code

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 plugins/nexu-io/open-design/marketplace
Claude Code
/plugin marketplace add nexu-io/open-design
Clone the repo
git clone --depth 1 https://github.com/nexu-io/open-design

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

open-design 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.

.claude-plugin/marketplace.json · 17 lines

What it actually says

{
  "$schema": "https://raw.githubusercontent.com/anthropics/claude-code/main/schemas/marketplace.json",
  "name": "open-design",
  "owner": {
    "name": "nexu-io",
    "url": "https://github.com/nexu-io/open-design"
  },
  "description": "OpenDesign — local-first design app exposed to coding agents over MCP. Install once with your agent's plugin command and projects/files/skills are reachable through stdio.",
  "plugins": [
    {
      "name": "open-design",
      "source": "./plugins/open-design",
      "description": "OpenDesign MCP server (stdio). 139 skills + projects/files/preview tools, served by your local `od` daemon. Requires `od` on PATH (brew / npm / DMG)."
    }
  ]
}
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. yesterday First seen · 17 lines scan A 8c02ce756c5c

Subscribe to this mod's changes

open-design is a plugin published in the GitHub repository nexu-io/open-design (92,778 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.