For debugging or custom tools, here are the local proxy endpoints:
http://127.0.0.1:38089/v1 — OpenAI-compatible APIhttp://127.0.0.1:38089/vertex_ai/v1 — Vertex AI for Claude Code, OpenCodehttp://127.0.0.1:38089/vertex_ai — Vertex AI for Gemini CLIUse any string as the bearer token (e.g. proxy). The local proxy handles authentication with the gateway.