Open Model Context Protocol

The token-efficient browser bridge for AI agents.

Connect Claude Desktop, Cursor, Antigravity, and any MCP agent harness directly to your active Chrome browser sessions. Serializes DOM structures to under 1,000 tokens per turn.

Add to Chrome View on GitHub

Interoperability

Built for the entire agent ecosystem.

A single open protocol implementation compatible with every major AI client, IDE, and custom agent framework.

Claude Desktop

Full operator control over browser sessions for Anthropic Claude 3.5 Sonnet and Opus.

Cursor IDE

Live DOM inspection, form interaction, and web verification directly inside Cursor Composer.

Google Antigravity

Native integration for Gemini Flash 3.5, 3.7, and Pro with zero prompt cache blowouts.

Custom MCP Runtimes

Standard JSON-RPC over stdio for OpenDevin, LangChain, Autogen, and custom agent scripts.

Performance

Measurable token efficiency.

Designed to preserve reasoning bandwidth across multi-turn agent workflows.

<1,000

Tokens per turn via numbered action maps, compared to 50,000–100,000+ tokens of raw HTML.

100%

Session continuity. Runs directly in your daily Chrome profile with active GitHub, AWS, and SaaS logins.

0.4s

DOM snapshot latency over local Native Messaging IPC. Zero cloud roundtrips and zero external telemetry.

Architecture Comparison

Aether vs Traditional CDP Wrappers.

A side-by-side comparison of runtime mechanics and context footprint.

Feature	Aether Browser MCP	Chrome DevTools MCP / Puppeteer
Token Consumption	<1,000 tokens / page	50,000–100,000+ tokens (Raw HTML)
Authentication State	Active Chrome profile reuse	Blank sandbox (logged out)
Tab Safety	Dedicated [⚡ Aether Agent] tab group	Overwrites active tabs
Targeting Mechanism	Sequential numeric anchors ([1], [2])	Complex XPath & CSS selectors
Execution Layer	100% Localhost IPC (127.0.0.1)	Raw CDP Debugger ports

Configuration

One-line setup for any client.

Add Aether to your client configuration file. The MCP server initializes automatically on demand.

{
  "mcpServers": {
    "aether-browser": {
      "command": "npx",
      "args": [
        "-y",
        "@studio-dao/aether-browser-mcp"
      ]
    }
  }
}

Open Architecture Origin

Aether started as the internal browser automation engine for Google Antigravity to solve severe context exhaustion from raw CDP tools. It was then decoupled and standardized on the Model Context Protocol (MCP) to provide the broader developer ecosystem with a lightweight, token-efficient browser bridge for any agent harness.

Privacy Policy

Effective Date: September 1, 2026

Aether Browser Bridge is an open-source project developed by Studio Dao. The architecture enforces zero external telemetry.

• Zero Data Collection: The extension does not record, transmit, or store personal credentials, web history, or session cookies on external servers.

• Local IPC Communication: All execution is restricted to local IPC between your Chrome extension and the local MCP process on 127.0.0.1.

• In-Memory Processing: Page DOM content is parsed in-memory solely when requested by your local AI agent. No browsing logs are persisted.

Source code is publicly available for audit at github.com/longebane/aether-browser-mcp.