Agent Browser Gateway Chrome extension security report

Agent Browser Gateway lets you share the Chrome tab you choose with a local AI coding agent. It is built for browser-assisted development and support workflows where the human should keep control of the browser session. No tab is visible by default. You explicitly share one tab from the extension popup, and the local abg CLI can then read, screenshot, inspect console or network context, or perform approved operations in that shared tab. Core principles: - Per-tab consent instead of broad browser access - No host permissions in the extension manifest - Local gateway over loopback transport - Agent-agnostic CLI for Codex, Claude Code, Cursor, Cline, and scripts - Token-efficient Markdown reads that reduce noisy HTML before it reaches an agent - Local audit log for inspectable operations - No analytics, advertising identifiers, or product telemetry ABG is not an end-to-end test runner and does not try to replace Playwright. Playwright is the right tool when automation owns the browser lifecycle. ABG is for the tab you are already using, with your current login and context, when you want to hand only that tab to an AI agent workflow.