v4.2.3

4.2.3 (2025-11-08)

Full Changelog: v4.2.2...v4.2.3

Features

• api: add description field to chats, make title optional (b18ee1e)
• mcp: enable optional code execution tool on http mcp servers (02de91e)

Bug Fixes

• mcpb: pin @anthropic-ai/mcpb version (7592b25)

Chores

• internal: codegen related update (e45eb2c)
• internal: codegen related update (06efc95)
• internal: grammar fix (it's -> its) (10090e9)
• mcp code tool explicit error message when missing a run function (1bc0f3e)
• mcp: add friendlier MCP code tool errors on incorrect method invocations (a2c4ebe)
• mcp: add line numbers to code tool errors (e9eb036)
• use structured error when code execution tool errors (ee2d35b)

Documentation

• mcp: add a README button for one-click add to Cursor (238e178)
• mcp: add a README link to add server to VS Code or Claude Code (0f7efe8)