⚡ Gemini Web Bridge

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🌐 English

Gemini Web Bridge (v4.4.3) is an Enterprise-grade Edge AI Gateway and Chrome Extension that bridges live, authenticated Google Gemini web sessions into an OpenAI-Compatible REST API (with real SSE streaming & tool emulation) and a Remote MCP Server, powered by Cloudflare Durable Objects.

It enables autonomous AI clients and developer tools — Hermes Agent, Cursor, Cline, Claude Code, and Python/TypeScript SDKs — to harness Gemini’s Deep Thinking models and execute Agentic Tool Loops directly over authenticated web sessions without artificial mocks or canned responses.

✨ Key Features

• Cloudflare Durable Objects Hub (GeminiBridgeDO) — Stateful in-memory Edge coordinator synchronizing browser WebSockets and external REST/MCP requests with FIFO concurrency control (concurrency = 1, queue depth = 10).
• Dynamic Browser Model Sync — Real-time model catalog synchronization (/v1/models) detecting live Gemini UI model tiers with verification lifecycle tracking (discovered → learning → verified).
• Real SSE Streaming & Idle Timeout — Immediate token chunk dispatching with an idle-based 60-second timeout, preventing long-thought dropouts.
• Disconnect Grace Period (~15s) — Connection buffering in Durable Objects ensuring network hiccups or browser tab backgrounding do not abort in-flight generations.
• Conversation Scopes (Gemini App + NotebookLM) — Seamless context routing between standard chat (https://gemini.google.com/app/) and document-grounded NotebookLM notebooks (https://gemini.google.com/notebook/) via the set_bridge_scope MCP tool.
• Zero-Token-Leak Privacy (G1 Guardrail) — Google CSRF tokens (SNlM0e) remain strictly in volatile browser MAIN-world RAM; credentials are never transmitted over the wire to Cloudflare Workers or external clients.
• Strict Fail-Closed Architecture — Responds with HTTP 503 / 422 immediately if the browser extension disconnects or a model is unverified. Zero mocks in production.