telnyx-acp is the command line of the Agent Control Plane. One page per verb follows, grouped as telnyx-acp --help groups them, and telnyx-acp <verb> --help prints the same for one verb.
Every verb but chat and logs --tail takes --json and answers one envelope, { ok: true, command, data } or { ok: false, command, error: { code, message, hint?, detail? } }. On a terminal the output is coloured, headlines carry an emoji, and a verb that waits on the platform shows a spinner with the elapsed time. Piped, under --json, with NO_COLOR set, with TERM=dumb, in CI, or with TELNYX_ACP_PLAIN=1, it is the same text with nothing added, so scripts see stable bytes. On a terminal a verb ends with one line on stderr when a newer release of the CLI exists (update); the check is off under --json, off a terminal, in CI, after update and export, and with TELNYX_ACP_NO_UPDATE_CHECK=1.
Verbs that act on the platform need a session from login or TELNYX_API_KEY, and check before doing any work. Verbs that act on a project run in the project directory, where agent.json is.