Claude Code v2.1.51
Claude Code v2.1.51 was released on .
Summary
- Added claude remote-control subcommand for external builds, enabling local environment serving for all users. - Updated plugin marketplace default git timeout from 30s to 120s and added CLAUDECOD...
Release Context
- This was the 41st Claude Code release of 2026 tracked by Havoptic.
- It shipped 3 days after Claude Code v2.1.50 (February 20, 2026).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- OpenAI Codex CLI rust-v0.106.0 (February 26, 2026)
- Devin Desktop v1.9566.11 (February 26, 2026)
- GitHub Copilot CLI v0.0.418 (February 25, 2026)
- OpenAI Codex CLI rust-v0.105.0 (February 25, 2026)
- Gemini CLI v0.30.0 (February 25, 2026)
Compare Claude Code: vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI
Release Notes
- Added claude remote-control subcommand for external builds, enabling local environment serving for all users.
- Updated plugin marketplace default git timeout from 30s to 120s and added CLAUDECODEPLUGINGITTIMEOUTMS to configure.
- Added support for custom npm registries and specific version pinning when installing plugins from npm sources
- BashTool now skips login shell (-l flag) by default when a shell snapshot is available, improving command execution performance. Previously this required setting CLAUDEBASHNOLOGIN=true.
- Fixed a security issue where statusLine and fileSuggestion hook commands could execute without workspace trust acceptance in interactive mode.
- Tool results larger than 50K characters are now persisted to disk (previously 100K). This reduces context window usage and improves conversation longevity.
- Fixed a bug where duplicate controlresponse messages (e.g. from WebSocket reconnects) could cause API 400 errors by pushing duplicate assistant messages into the conversation.
- Added CLAUDECODEACCOUNTUUID, CLAUDECODEUSEREMAIL, and CLAUDECODEORGANIZATIONUUID environment variables for SDK callers to provide account info synchronously, eliminating a race condition where early telemetry events lacked account metadata.
- Fixed slash command autocomplete crashing when a plugin's SKILL.md description is a YAML array or other non-string type
- The /model picker now shows human-readable labels (e.g., "Sonnet 4.5") instead of raw model IDs for pinned model versions, with an upgrade hint when a newer version is available.
Other Recent Claude Code Releases
- v2.1.215 (July 19, 2026)
- v2.1.214 (July 18, 2026)
- v2.1.212 (July 16, 2026)
- v2.1.211 (July 15, 2026)
- v2.1.210 (July 14, 2026)
All Claude Code releases · All AI coding tool releases on Havoptic