Claude Code 2.1.229 Release
This release includes numerous enhancements and bug fixes across Remote Control sessions, streaming stability, plugin marketplace support, and IDE integration. Notable improvements include SSE keepalive pings to prevent idle timeouts, fixes for crashes in terminal output and file handling, better workflow optimization, and new VSCode features like session groups and resizable side panels.
- Documented
claude remote-control --continuefor resuming the most recent Remote Control session - Added server-supplied Claude Code hook support for self-hosted runner sessions, matching managed-environment behavior
- Added SSE keepalive pings to gateway streaming responses during long thinking pauses, preventing idle-timeout disconnects on Vertex and Bedrock upstreams
- Added plugin marketplace
commandsources: a local command (e.g. an IDE) prints the plugin directory, which is re-resolved each session and applied without a restart;mode: "link"uses it in place ListAgentsnow marks disconnected Remote Control sessions asofflineand labels your cloud sessions ascloud- Fixed long responses partly disappearing while streaming and being printed twice in the terminal
- Fixed a crash to the error screen (including on
--resumeof the affected session) when a tool call had a non-stringglob,file_path, orcommandvalue - Fixed a RangeError crash when a progress bar or markdown table rendered in a very narrow terminal window (could also crash
claude --continue/--resumeat startup) - Fixed a crash on Windows when a tool call or message referenced a file by an extended-length (
\\?\) or UNC path - Fixed auto mode failing on every tool call for users who disable the attribution header via
CLAUDE_CODE_ATTRIBUTION_HEADER(direct Anthropic API connections) - Fixed
/modelrejecting Sonnet/Opus 1M for claude.ai subscribers using a customANTHROPIC_BASE_URLgateway - Fixed MCP OAuth with strict authorization servers by using
127.0.0.1instead oflocalhostin the redirect URI - Fixed Remote Control clients showing a stuck working spinner after a slash command typed in the laptop terminal
- Fixed the Claude Code Review workflow generated by
/install-github-appcompleting without posting its review on the pull request - Fixed multi-second UI stalls after editing a file with thousands of IDE diagnostics while the IDE extension is connected
- Fixed one-shot
claude plugincommands leaving a stray liveness file that could prevent cleanup of outdated plugin versions - Fixed dynamic workflows inside CPU-limited containers using the host machine's core count instead of the container's CPU limit
- Fixed a file-watcher handle leak after atomic file replacements, and an uncaught error on Windows when the scheduled-tasks watcher failed on a network or virtual filesystem
- Fixed SDK and
--input-format stream-jsonsessions getting a 400 API error when a whitespace-only message was submitted - Fixed conversations whose messages alone exceed the API's 32 MB request limit retrying compaction when no images or documents can be stripped; they now fail once with a clear message
- Fixed OpenTelemetry export from Claude Desktop sessions being rejected by the Desktop-managed gateway when that gateway is also the telemetry endpoint
- Fixed self-hosted runner and other remote sessions exiting at startup when
managed-mcp.jsonis deployed and the server delivers MCP servers; those servers are now skipped with a warning - Fixed self-hosted runner repository preparation hanging on a Git Credential Manager prompt; git now fails fast when credentials are missing
- Improved workflow fan-outs to stagger same-prefix sibling agents so subsequent agents read the cached prompt prefix instead of re-paying it (
CLAUDE_CODE_WORKFLOW_PREFIX_STAGGER_MS=0disables) - Improved "prompt is too long" errors to explain why automatic compaction could not recover instead of only suggesting
/compact - Improved sandbox: IPv6 literals in network domain lists are now bracketed (
[::1]:443), and ambiguous spellings are enforced fail-closed and flagged by/doctor - Updated
/loginto repeat theCLAUDE_CODE_OAUTH_TOKENoverride warning after a successful login - Changed
/commit-push-prso git/gh commands with dangerous flags (--force,--amend,--no-verify, etc.) are no longer auto-approved - Changed self-hosted runner Windows startup to require an explicit
--base-dir; there is no default checkout directory on Windows - [VSCode] "Report a problem" and
/bugnow open the built-in feedback dialog instead of a retired survey link - [VSCode] Made the
/btwside-question panel resizable by dragging its boundary, in both side-docked and stacked layouts - [VSCode] Added session groups in the sidebar — right-click to create, rename, or delete; Cmd/Ctrl- or Shift-click to move several sessions at once
Source: original entry ↗
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