A connection between an AI assistant and a real browser session in Chrome or Firefox, including the session where you are already signed in. MCP is a standard way for an AI assistant to use external tools.

Use it to automate browser tasks through Chrome or Firefox with the included MCP server, skills, and documentation.

It lets browser automation work through an existing logged-in browser rather than requiring a separate browser session and repeated sign-ins.

opendia — Plugin by aeonfun

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.

Claude Code

/plugin marketplace add aeonfun/opendia

agentmods

npx agentmods add plugins/aeonfun/opendia/marketplace

Clone the repo

git clone --depth 1 https://github.com/aeonfun/opendia

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

opendia 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 2d 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.

.claude-plugin/marketplace.json · 15 lines

What it actually says

{
  "name": "opendia",
  "description": "OpenDia — connect your real browser to AI harnesses via MCP.",
  "owner": {
    "name": "Aeon Inc"
  },
  "plugins": [
    {
      "name": "opendia",
      "source": "./plugins/opendia",
      "description": "Browser automation through your logged-in Chrome/Firefox session — MCP server, skills, and harness docs."
    }
  ]
}

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.

2d ago First seen · 15 lines scan A 899d6e51c2c9

Subscribe to this mod's changes

opendia is a plugin published in the GitHub repository aeonfun/opendia (1,915 stars, last pushed 3d ago), licensed MIT. 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.

Browser automation Productivity Writing and docs automation chrome-extension dia mcp npm npm-package

opendia

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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