sess list

sess list [--json]

Lists every session sess knows about — the union of saved snapshots and live tmux sessions — with its state, pane/window count, and on-disk size, sorted by name.

sess list

NAME                 STATE     WIN PANE       SIZE  SAVED
backend-debug        RUNNING     1    3      633 B  2026-08-30 03:16
scraper-mimir        STALE       1    2      1.2 KB  2026-08-29 22:04
  a saved directory no longer exists: /tmp/old-clone

A STALE or BROKEN entry prints a second, indented line explaining why — the same detail shown in the picker and in sess status.

Pass --json for the same data as JSON, for scripting:

sess list --json