gemini-claude-bridge — Drop-in proxy that lets Claude Code use Gemini models (2.5 Flash/Pro, 3 Flash/Pro).
pip install "gemini-claude-bridge[proxy]"
GEMINI_API_KEY=your-key python examples/proxy_server.py
ANTHROPIC_BASE_URL=http://localhost:8082 claude
Handles Gemini-specific protocol quirks that other proxies get wrong: thoughtSignature persistence, multimodal tool results, streaming tool arguments. MIT licensed, 45 tests.