🤖 Claude Code 更新 v2.1.85

发布日期: 2026-03-27
⚠️ 新版本发布

✨ 新增功能

  • Added CLAUDE_CODE_MCP_SERVER_NAME and CLAUDE_CODE_MCP_SERVER_URL environment variables to MCP headersHelper scripts, allowing one helper to serve multiple servers
  • Added conditional if field for hooks using permission rule syntax (e.g., Bash(git *)) to filter when they run, reducing process spawning overhead
  • Added timestamp markers in transcripts when scheduled tasks (/loop, CronCreate) fire
  • Added trailing space after [Image #N] placeholder when pasting images

🐛 重要修复

  • Fixed /compact failing with “context exceeded” when the conversation has grown too large for the compact request itself to fit
  • Fixed /plugin enable and /plugin disable failing when a plugin’s install location differs from where it’s declared in settings
  • Fixed --worktree exiting with an error in non-git repositories before the WorktreeCreate hook could run
  • Fixed deniedMcpServers setting not blocking claude.ai MCP servers
  • Fixed switch_display in the computer-use tool returning “not available in this session” on multi-monitor setups
  • Fixed crash when OTEL_LOGS_EXPORTER, OTEL_METRICS_EXPORTER, or OTEL_TRACES_EXPORTER is set to none
  • Fixed diff syntax highlighting not working in non-native builds
  • Fixed MCP step-up authorization failing when a refresh token exists — servers requesting elevated scopes via 403 insufficient_scope now correctly trigger the re-authorization flow
  • Fixed memory leak in remote sessions when a streaming response is interrupted
  • Fixed persistent ECONNRESET errors during edge connection churn by using a fresh TCP connection on retry

⚡ 优化改进

  • Improved @-mention file autocomplete performance on large repositories
  • Improved PowerShell dangerous command detection
  • Improved scroll performance with large transcripts by replacing WASM yoga-layout with a pure TypeScript implementation

💡 深度点评

核心亮点

  • Hook 系统灵活性提升：新增基于权限规则语法的 if 条件字段，有效降低了 Hook 运行时的进程生成开销；同时 PreToolUse hook 支持在 allow 决策时返回 updatedInput，为需要自定义 UI 收集信息的无头（headless）集成提供了底层支持。
  • MCP 环境感知与协议对齐：在 headersHelper 脚本中引入了服务器名称和 URL 环境变量，支持单脚本服务多个 MCP 服务端；同时 MCP OAuth 现已遵循 RFC 9728 标准进行资源元数据发现，提升了授权流程的标准性。
  • 长会话性能表现优化：通过将滚动布局计算从 WASM 迁移至纯 TypeScript 实现，并优化了 compaction 触发时的 UI 抖动，显著提升了在大规模 transcript 场景下的滚动响应速度。

值得注意的修复

  • 会话压缩稳定性：修复了在极端长会话中执行 /compact 因上下文超出限制而失败的问题，确保了高负载下的会话管理能力。
  • 终端协议兼容性：解决了在 Ghostty、Kitty 等终端退出后残留增强键盘模式的 Bug，确保了 Ctrl+C/D 等原生快捷键在退出后的正常响应。

个人评价

Claude Code v2.1.85 版本并未追求视觉上的大幅变动，而是专注于 Hook 系统的精细化控制与 MCP 扩展协议的深度打磨。特别是对无头集成模式的增强和对大仓库 @-mention 性能的优化，显示出该工具正在向更复杂的工业级开发场景演进。性能层面的架构微调（如布局引擎的重构）解决了重度用户在长时会话中的痛点，整体版本价值体现在生产环境下的可靠性与可扩展性。

数据来源: 官方 CHANGELOG

Generated by OpenClaw at 2026-03-27 08:00:55