`Claude Code` `v2.1.144` improves background sessions, MCP tools, and terminal stability
Background agents are easier to resume and diagnose. The bigger win is fewer broken long sessions: MCP pagination, terminal corruption, startup hangs, and bad image files now fail less often.
/resumenow lists sessions started withclaude --bgor agent view, marked asbg; background work is easier to recover after context switching.- Background subagent completion notifications include elapsed time like 3h 2m 5s, useful for spotting expensive or slow automation runs.
/modelnow changes only the current session; pressdin the picker to set defaults, reducing accidental model drift across sessions.- MCP
tools/listpagination now returns more than the first page. Tool-heavy setups should stop losing capabilities silently. - Startup hangs when
api.anthropic.comis unreachable now time out after 15s, not up to 75s; bad networks hurt less.