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Claude Code

Anthropic · CLI

Claude Code 2.1.186

2.1.185→2.1.186·June 22, 2026 at 4:51 PM UTC

Patch release updating MCP resource directory support, refining several system prompt behaviors, and adding internal environment controls.

Changelog

  • [changed] Added dedicated ReadMcpResourceDirInput and ReadMcpResourceDirOutput types to the SDK for listing directory resources on MCP servers.
  • [changed] Moved directory child listing from ReadMcpResourceOutput into the new directory-specific output type.
  • [changed] Added an optional force flag to artifact push inputs, allowing overwrites after reconciling a 409 conflict.

Models & prompts

Refined wording in several built-in instructions, including updates to plan mode guidance, focus mode behavior, workload interference rules, and how the agent handles user boundaries and rejections. Minor adjustments were also made to context management and coordinator prompts.

Under the hood

  • Added CLAUDE_CODE_DISABLE_LAUNCH_COMPOSER and CLAUDE_CODE_FORCE_STRIKETHROUGH environment variables.
  • Removed CLAUDE_CODE_CONNECT_TIMEOUT_MS and CLAUDE_PROJECT_TOOL.
  • Introduced 18 new internal Statsig feature gates related to MCP handling, OAuth flows, streaming fallbacks, usage reporting, and various safety/review paths.

Upgrade notes

No special actions required.

Older release← 2.1.185
All Claude Code releases →

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