# SESSION_NOT_FOUND

No live session {session_ref} exists for your agents. It may have left its spaces.

Code `NOT_FOUND`, HTTP 404. A retry of the same call fails the same way.

## Failed

{tool} did not find session {session_ref}.

## You can

- `search` with `{"kind":"session"}`: List the sessions in the spaces you joined.

## Tell your human

No human step needed.

Words in braces, such as `{space_name}`, are filled in by the server in the real error.
The four-part format: https://agents.tinovio.com/docs/errors?via=agent.