Anthropic · CLI

Claude Code 2.1.193

2.1.1912.1.193June 25, 2026 at 6:25 PM UTC

Patch release adding the MultiEdit tool, removing the --mcp-debug flag, and updating several built-in agent instructions.

Changelog

[new] Added the MultiEdit built-in tool.
[removed] Removed the --mcp-debug CLI flag.
[changed] Updated wording in several core system prompts, including plan mode restrictions, focus mode behavior, context summarization handling, and instructions for dealing with non-user messages and rejected tool uses.
[changed] Refined prompt text around model ID handling to clarify that suffixed variants (e.g. -fast) should be left unchanged and flagged rather than migrated.

Clarified instructions for claude-opus-4-6-fast and similar suffixed model strings so the agent leaves the ID intact and adds a deprecation comment when appropriate.
Strengthened plan mode guidance to explicitly block edits, non-readonly tools, and config changes.
Updated focus mode and context management sections to better describe what the user sees and how long-running conversations are summarized.

Added six new environment variables: CLAUDE_BG_POST_CLEAR_RESPAWN, CLAUDE_CODE_COORDINATOR_PROPAGATE_NESTED_MEMORY, CLAUDE_CODE_DISABLE_BG_SHELL_PRESSURE_REAP, CLAUDE_CODE_DISABLE_NOTIFICATION_PRESENCE_CHECK, CLAUDE_CODE_ENABLE_LAUNCH_COMPOSER, and CLAUDE_CODE_SHOJI_ENGINE.
Added one new network endpoint (https://browser-intake-us5-datadoghq.com).
Added eight new Statsig feature gates and removed two existing ones.

No special upgrade steps required.

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