Claude Code v2.1.144: /resume for Background Sessions, Faster MCP Startup, 75s Timeout Fix
Anthropic
Claude Code v2.1.144 (May 19) adds /resume support so background sessions started via `claude --bg` or agent view appear alongside interactive ones. The /plugin browse pane now shows plugin last-updated dates; /model changes model for current session only (press `d` to set default for new sessions); SDK/headless MCP startup is up to 2 seconds faster with slow MCP servers. Bug fixes: startup hang of up to 75s when api.anthropic.com was unreachable (now times out after 15s), terminal rendering glitches, and macOS background sessions crashing in Full Disk Access-protected folders.
Why it matters
The /resume feature closes a workflow gap — background sessions were previously invisible alongside interactive ones. The 2s MCP startup improvement benefits agentic workflows with slow MCP servers, and the 75s→15s timeout fix prevents the agent appearing to hang when the API is unreachable.
Importance: 2/5
Minor version: /resume for background sessions, 2s MCP startup improvement, critical 75s→15s API timeout fix