ClaudeCodeChanges

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Claude docs changes for February 12th, 2026 [diff]

Executive Summary

  • Claude Code 2.1.39 released with Agent Teams model identifier fixes for Bedrock, Vertex, and Foundry customers
  • Chrome integration now supports Microsoft Edge browser with native messaging configuration
  • New Clarify MCP server added for CRM query and record creation
  • Server-managed settings version requirement updated for Claude for Teams to 2.1.38

New Claude Code versions

2.1.39

New features

  • Added guard against launching Claude Code inside another Claude Code session
  • Added speed attribute to OTel events and trace spans for fast mode visibility

Existing feature improvements

  • Improved model error messages for Bedrock/Vertex/Foundry users with fallback suggestions
  • Improved error message for many-image dimension limit errors with /compact suggestion
  • Improved terminal rendering performance

Major bug fixes

  • Fixed Agent Teams using wrong model identifier for Bedrock, Vertex, and Foundry customers
  • Fixed a crash when MCP tools return image content during streaming
  • Fixed /resume session previews showing raw XML tags instead of readable command names
  • Fixed plugin browse showing misleading "Space to Toggle" hint for already-installed plugins
  • Fixed hook blocking errors (exit code 2) not showing stderr to the user
  • Fixed /resume showing interrupt messages as session titles
  • Fixed Opus 4.6 launch announcement showing for Bedrock/Vertex/Foundry users
  • Fixed fatal errors being swallowed instead of displayed
  • Fixed process hanging after session close
  • Fixed character loss at terminal screen boundary
  • Fixed blank lines in verbose transcript view

Claude Code changes

Changed documents

Chrome [Source]

  • Chrome integration now supports Microsoft Edge in addition to Google Chrome. [line 6] [Source]
  • Added Edge-specific native messaging host configuration paths for macOS, Linux, and Windows. [lines 222-231] [Source]

MCP [Source]

  • Added new MCP server: Clarify (CRM query and record creation tool) with installation command claude mcp add --transport http clarify https://api.clarify.ai/mcp. [lines 31-37] [Source]

Server-managed settings [Source]

  • Updated version requirements for server-managed settings: Claude for Teams now requires version 2.1.38 or later (was 2.1.30). [line 13] [Source]

API changes

Changed documents

Model deprecations [Source]

  • Updated Console Usage page URL from /settings/usage to /usage. [line 36] [Source]

Rate limits [Source]

  • Updated Console Usage page URL from /settings/usage to /usage. [lines 89, 192]

Fast mode [Source]

  • Changed pricing symbol from <= to ≤ for better typography in the description of fast mode pricing for prompts 200K tokens or less. [line 46] [Source]