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Claude Code

Anthropic · CLI

Claude Code 2.1.196

2.1.195→2.1.196·June 29, 2026 at 1:55 AM UTC

Patch release adding the claude-opus-4-7-fast model, a new report_findings tool for structured reviews, and supporting MCP and internal capabilities.

Changelog

  • [new] Added support for the claude-opus-4-7-fast model.
  • [new] Added the report_findings tool, which returns structured findings (file, line, summary, failure scenario, optional verdict and outcome) for code reviews.
  • [new] Added the mcp__cowork__present_files MCP tool.

Models & prompts

  • The model registry now includes claude-opus-4-7-fast.
  • System prompts were updated to handle focus mode (hiding intermediate tool output), plan mode restrictions, skill invocation, ambient context, and the new reporting workflow for findings.
  • Fast-mode model handling instructions were adjusted to recognize the new -fast variant.

Under the hood

  • Added environment variables CLAUDE_CODE_DISABLE_BG_EXIT_HANDOFF, CLAUDE_CODE_PLUGIN_BINARY_ASSETS, CLAUDE_CODE_REPORT_FINDINGS, CLAUDE_CODE_SKILL_DESC_REFRAME, CLAUDE_CODE_TOTAL_TOKENS_REMINDER_BUDGET, CLAUDE_MD_BYTES, CLAUDE_PREVIEW_CLASSIFIER_FLOOR, and CLAUDE_RUNNER_ACTIVITY_FD.
  • Added the CLAUDE_PREVIEW environment variable group.
  • New backend routes /api/frame/track and /api/frame/track4 were introduced.

Upgrade notes

Nothing required.

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