Claude – v2.1.310

What’s in this update

What's changed

• Added the Monitor tool and plugin monitors on Bedrock, Vertex, and Foundry, and when telemetry or nonessential traffic is disabled; long foreground sleeps are now blocked there too
• Fixed requests failing behind some gateways and compatible servers that reject the effort-2025-11-24 beta value or mid-conversation system messages; Claude Code now retries without them
• Fixed background cleanup deleting some recent files, such as pasted images, when cleanupPeriodDays is set to a very large value
• Fixed compaction after a "Prompt is too long" error keeping too much of a conversation with dense text, such as base64 or SVG, so the next request could fail again
• Fixed file read permission prompts not showing where a symbolic link leads
• Fixed a question's auto-continue timeout firing the moment the external editor closed after a long edit
• Windows: Fixed PreToolUse and PermissionRequest hooks letting a tool call through when Git Bash is missing and the hook's command is only quoted strings, such as a quoted path
• Improved auto mode's prompt before the first read outside the working directories: it now says when blocking those reads makes shell commands ask for permission
• Improved memory use of non-interactive sessions (-p, Agent SDK) during compaction when the transcript file is very large

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Read the full patch notes on github.com →

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