30+ fixes + Admin API coverage boost reliability; cost-optimize command lets teams measure API spend improvements step by step
Claude Code v2.1.247: SendFeedback tool, cost-optimize command, and 20+ fixes
Original: v2.1.247
Importance: コスト最適化ツール追加と30+のバグ修正により、既存Claude Code利用者の生産性向上と信頼性が向上するが、新機能の破壊的影響は限定的。
Summary
Claude Code v2.1.247 introduces SendFeedback tool for session error reporting, organizations can now rotate custom tips alongside built-ins, and new `/claude-api cost-optimize` command profiles existing projects and optimizes Claude API spend through measured changes. Admin API coverage expanded (organization members, invites, workspaces, API keys, rate limit reports, CMEK). Over 30 bug fixes address keyboard layout issues in Cyrillic/non-Latin terminals, session hangs from large error output, bash sandbox symlink deletion, and cloud session permission mode switching delays. Sub-agents now fall back to parent's model chain on first-call 404, improving reliability.
Key Points
- SendFeedback tool and `/claude-api cost-optimize` command added
- Admin API coverage expanded (organization, invites, workspaces, API keys, rate limits, CMEK)
- Sub-agents now use parent session's fallback model chain on 404 errors
- 30+ fixes: keyboard layouts, session hangs, bash symlink deletion, cloud permission modes
View developer notes (APIs, breaking changes, migration)
v2.1.247 hardens agent execution with Admin API coverage (organization members, invites, workspaces, API keys, rate limit reports, CMEK). Sub-agents now use parent session's fallback model chain on 404; error response includes `error_type`, `status`, `request_id`, `model`. `/claude-api cost-optimize` command profiles project spend and iterates cost levers: prompt caching, batch API, model choice, token hygiene, effort. Key fixes: bash sandbox no longer deletes `~/.claude/settings.json` symlinks managed by nix/home-manager/stow; Ctrl shortcuts work in non-Latin keyboard layouts on kitty terminals; unbounded memory growth in hook output file handling prevented; cloud session permission mode no longer stale after quick mode-switch post-message.
Source: https://github.com/anthropics/claude-code/releases/tag/v2.1.247
Outlet: Claude Code Releases
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