/resume

Continues an earlier Codex session.

/resume is part of the official list of interactive slash commands and matches the purpose of the CLI subcommand resume, which lets you continue sessions, including via resume --last or a specific session ID. Within the TUI, /resume lets you return to a previous session instead of starting fresh.

✅ WHEN TO USE IT?

Continue the same task after an interruption

/resume — go back to the last session to keep working there

Deliberately resume a specific earlier session

/resume — pick the right one from a list of previous sessions

⛔ WHEN NOT TO?

You deliberately want to start completely fresh

/resume picks up an existing session along with its context, which isn't wanted here.

Better: Use /new for a fresh session with no prior context

SOURCES

Codex CLI Doku: Slash Commands ↗ developers.openai.com