Model Context Protocol

Token-efficient browser automation for LLM agents.

Connect Claude Desktop, Cursor, and Antigravity directly to your active Chrome browser sessions. Prunes DOM trees to under 1,000 tokens per turn.

View on GitHub Download v0.1.0

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

Comparison

Why raw CDP and headless drivers exhaust LLM context windows.

Capability	Aether Browser MCP	Chrome DevTools MCP / Puppeteer
Token Consumption	<1,000 tokens / turn	50,000–100,000+ tokens (Raw HTML)
Session Auth	Active Chrome profile reuse	Blank disposable sandbox (logged out)
Tab Management	Dedicated [⚡ Aether Agent] tab group	Overwrites user tabs directly
Targeting Mechanism	Sequential numeric anchors ([1], [2], [3])	Complex XPath / fragile CSS selectors
Execution Environment	100% Localhost IPC (Native Messaging)	Raw CDP Debugger ports

Technical Architecture

Core mechanics of the serialization and interaction pipeline.

Numbered Anchor Serialization

Converts DOM trees into semantic Markdown. Every actionable element (links, buttons, inputs, dropdowns) receives a deterministic numeric index.

Active Session Continuity

Operates inside your existing browser session via Chrome Native Messaging. Preserves authenticated cookies across GitHub, Jira, AWS, and internal tools.

Non-Destructive Tab Grouping

Agent navigations automatically isolate inside an active cyan Chrome Tab Group, preventing your personal work tabs from being replaced.

Universal Protocol (MCP)

Implements standard Model Context Protocol JSON-RPC schemas compatible with Claude Desktop, Cursor, Antigravity, and OpenDevin.

Synthetic Event Dispatching

Emits complete synthetic event sequences (pointerover, mousedown, click, keydown, input, change) tested against React, Vue, and modern SPAs.

Local-First Zero Telemetry

All data parsing occurs strictly in-memory on localhost (127.0.0.1). Zero external network requests or analytics tracking.

Privacy Policy

Effective Date: September 1, 2026

Aether Browser Bridge is an open-source tool developed by Studio Dao. The extension is built with a zero-telemetry architecture.

• No Data Collection: The extension does not log, store, or transmit your personal data, credentials, browsing history, or cookies to external servers.

• Local IPC Only: All data exchange occurs strictly on localhost between your browser extension and the local MCP process.

• In-Memory Parsing: Page DOM content is parsed in-memory solely when invoked by your local AI agent. No browsing records are retained.

Full source code is open for review at github.com/longebane/aether-browser-mcp.