Claude Code v2.1.236
Claude Code v2.1.236 was released on .
Summary
Claude Code 2.1.236 gives you more control over which model starts new sessions and adds smarter cross-session notifications so sessions can alert each other when idle. We've also fixed several bugs affecting the clipboard, fullscreen rendering, and message handling—plus impro...
Release Context
- This was the 190th Claude Code release of 2026 tracked by Havoptic.
- It shipped 1 day after Claude Code v2.1.235 (August 18, 2026).
- Claude Code: ships every 1.2 days — 19 releases in the last month.
Why it matters: Notify other Claude sessions when idle without polling.
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- Antigravity CLI v1.1.18 (August 22, 2026)
- Devin Desktop v3.8.20 (August 21, 2026)
- Antigravity CLI v1.1.17 (August 20, 2026)
- OpenAI Codex CLI rust-v0.149.0 (August 20, 2026)
- Antigravity CLI v1.1.16 (August 20, 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 ANTHROPICDEFAULTMODEL environment variable: sets the model new sessions start on, while a /model pick still overrides it and persists across restarts (unlike ANTHROPICMODEL)
- Added notifywhenidle to cross-session SendMessage: ask another Claude Code session on this machine to send one notice when it next goes idle — opt-in, one-shot, no polling (macOS and Linux)
- Sandbox: on macOS, wildcard read-deny rules (e.g. /.env) now take precedence inside allowed read regions, cover matched directories' contents, and can't be bypassed by renaming the denied file
- Fixed clipboard copy, background housekeeping, background sessions, and local MCP logs breaking after the directory a session had switched into was removed (since 2.1.229)
- Fixed the fullscreen renderer failing permanently after a single failed start: it now falls back to the classic renderer instead of exiting on every subsequent launch
- Fixed the /model picker rendering taller than the terminal: it now shows only as many models as fit the window, with the rest reachable by scrolling
- Fixed SendMessage calls being rejected when a malformed closing tag left the message text inside the summary field
- Fixed unhandled promise rejections when a subprocess fails to start, for example powershell.exe on WSL with Windows interop disabled (regression in 2.1.234)
- Fixed fullscreen mode sometimes not showing a newly sent message until the next update after the terminal was resi
Other Recent Claude Code Releases
- v2.1.246 (August 25, 2026)
- v2.1.245 (August 25, 2026)
- v2.1.243 (August 24, 2026)
- v2.1.241 (August 22, 2026)
- v2.1.240 (August 22, 2026)
All Claude Code releases · All AI coding tool releases on Havoptic