Anthropic AI Updates: October 20, 2026

1. Claude Code 2.1.304 Adds Guided Auto Mode Setup and a Managed Agents Security Check

Anthropic. Claude Code 2.1.304 adds /auto-mode-setup, a guided setup that reads the project and recent sessions to teach auto mode about the user’s environment, and it is available on Bedrock, Vertex, Foundry, the Claude apps gateway, and telemetry-disabled sessions. A new /claude-api managed-agents-secure command compares a Managed Agents agent’s settings against Anthropic’s published security guide without changing anything. Pro and Max users now get a warning when resuming an inactive conversation would consume a noticeable share of the 5-hour usage limit, with the option to start fresh and have Claude look up the earlier conversation. For mod authors, tool.check gains decider: "person" (only a human or host callback can approve the ask) and an e.isReadOnly flag, and Code Review admins can now opt every repository in a GitHub organization into review, including repositories added later. Source