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Claude Code

Anthropic · CLI

Claude Code 2.1.199

2.1.198→2.1.199·July 2, 2026 at 1:58 AM UTC

Patch release with added Claude Design tool support, refined system prompts for plan mode/focus mode/context handling, and three new environment variables for bridge and plugin behavior.

Changelog

  • [new] Added ClaudeDesignInput and ClaudeDesignOutput types, enabling the agent to perform Claude Design operations through a new MCP-style tool that accepts an operation and arguments object.
  • [changed] Updated prompt language around plan mode to emphasize that only the plan file may be edited while the mode is active.
  • [changed] Revised focus mode instructions so the agent skips intermediate progress updates and only emits the final message when the setting is enabled.
  • [changed] Adjusted context management and ambient context guidance to reduce unnecessary narration of non-relevant details.

Models & prompts

Prompt fragments received targeted wording updates for plan mode restrictions, focus mode behavior, task verification steps, and handling of user corrections during long-running work. No model ID or default model changes.

Under the hood

  • Added CLAUDE_CODE_BRIDGE_SESSION_ID, CLAUDE_CODE_GZIP_REQUEST_BODIES, and CLAUDE_CODE_SKIP_PLUGIN_MCP_SERVERS_EXCEPT environment variables.
  • Several internal feature gates were added or retired, primarily around request compression, bridge forwarding, team memory conflict notices, and stacked slash command handling.

Upgrade notes

No manual steps required.

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README.mdDocs2 KBpackage.jsonMetadata1.4 KBmanifest.jsonMetadata1.4 KBversion.jsonMetadata172 Bcli-wrapper.cjsCJS4.8 KBinstall.cjsCJS7 KBsdk-tools.d.tsTS136.1 KBLICENSE.mdDocs147 B
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