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Claude Code 2.1.325

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Anthropic released Claude Code 2.1.325, fixing a zstd decoding security issue, subagent model inheritance, and context length compaction on third-party gateways.

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Also shipped Nov 13, 2026Anthropic in November 2026 →

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Claude Code 2.1.323

- Added Code Mode, an experimental opt-in in which Claude writes JavaScript to call its tools; see https://code.claude.com/docs/en/code-mode to turn it on, or to turn it off for an organization Added engines["claude-code"] to plugin.json: plugins outside their stated Claude Code version range are not installed, updated or loaded, and install and update pick...

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Claude Code 2.1.322

Anthropic released Claude Code version 2.1.322, introducing fast mode support on Vertex AI across global, US, and EU regions.

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Claude Code 2.1.321

Claude Code 2.1.321 adds Claude Fable 5.2 as the default model and includes various fixes for MCP OAuth, sandbox permissions, and file handling.

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Claude Code 2.1.319

Claude Code 2.1.319 adds support for background MCP tasks, new environment variables for auto-mode server checks, and a setting to deny tool calls that require permission prompts.

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Claude Code 2.1.318

Claude Code 2.1.318 adds session answer recording, AWS role assumption for cost attribution, and improved credential expiration reporting.

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Claude Code 2.1.317

- Added a warning to /schedule when a new cloud scheduled task gets connectors you did not ask for, with how to remove them Added a check that asks before a web or shell tool call sends your account email address to the network Added onFailure: "block" for Agent SDK hook callbacks, so a callback that fails blocks the action instead of letting it run Added a...

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Claude Code 2.1.316

This update adds pooled group budgets, configurable subagent effort levels, and new guardrail tagging for Bedrock upstreams. Fast mode for Opus 4.8 is deprecated and scheduled for removal on November 30, 2026.

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Claude Code 2.1.314

Claude Code 2.1.314 adds write permissions for working directories, group-based upstream routing, and idle conversation compaction for VS Code and Claude Desktop.

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