Claude Code 2.1.278 ends Auto mode's classifier surcharge
Server-side classification is now the default, so metered users stop paying overhead to route a turn — plus a VSCode cost meter and gateway egress controls.
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Auto mode stops billing you to route
The classifier that picks a model per turn now runs server-side by default for the Claude API, Enterprise, and Bedrock/Vertex/Foundry/gateway users, so you no longer pay token overhead just to select a model. Opt back to the local classifier with CLAUDE_CODE_AUTO_MODE_SERVER=0 on Bedrock/Vertex/Foundry/gateways.
VSCode now shows cost and tokens
The VS Code extension surfaces cost and token usage inline, adds a copy-response button, lists background shells in the agent map, and adds a sign-out row — so you can watch spend without leaving the editor.
Seal the gateway's egress path
Set CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1 to force forward-proxy-only egress, and attach a static headers: map to upstream configs — cleaner, tighter routing when Claude Code sits behind a corporate proxy.
AGENTS.md is now editable in /config
Following 2.1.277, projects with no CLAUDE.md read AGENTS.md — and 2.1.278 lets you edit those project instructions straight from /config instead of hand-editing the file.