Google Cloud API Gateway model routing is now in Public Preview: a serverless OpenAPI-spec layer that routes Gemini, Claude, and OpenAI requests — but only if all your backends live on Vertex AI.
Claude Code 2.1.203 fixes a critical background-agent bug that silently dropped ANTHROPIC_BASE_URL, sending API keys to Anthropic's default endpoint and failing with 401. Any team routing Claude Code through a custom AI gateway must audit and upgrade.
Claude Code 2.1.179 patches three silent failure modes that specifically affect teams routing through a custom API gateway: a 401 auth regression in claude agents workers, compaction ignoring the configured fallback model, and mid-stream response loss on connection drops.
