Snapshot: version, modem, frequency (Hz), TX/RX state, transmit gate, region, band.

Host + network diagnostics for troubleshooting connectivity.

Does NOT connect to fldigi. Reports the resolved FLDIGI_HOST/PORT, this process's Python and hostname, the transmit-gate state, and the host's network interfaces — so you can tell whether the process can even see the target's network (e.g. when running host-side vs. sandboxed). If a non- loopback host times out, see mcp-host-bridge (docs/INSTALL.md).

The fldigi program and its process.

Info operations: version, version_struct, name, name_version, config_dir, list_methods. Process operations: launch, stop, terminate, is_running.

launch starts fldigi pointed at the configured XML-RPC endpoint; stop/ terminate ask it to quit (saving options; optionally the log/macros) and fall back to ending a process this server started.

Operating mode (the fldigi "Op Mode" menu) and modem settings. operations: get, list, get_id, get_max_id, set (value=mode name e.g. 'BPSK31'), set_by_id (value=id), get/set/inc_carrier, get/set/inc_afc_range, get/set/inc_bandwidth, get_quality, search_up, search_down, olivia_get/set_bandwidth, olivia_get/set_tones.

RF frequency and waterfall sideband. operations: get, set (value=Hz), increment (value=Hz), get_sideband, set_sideband (value='USB'|'LSB').

fldigi operating controls (the AFC / SQL / Rev / Lock / RxID / TxID buttons) and status. operations: get/set/toggle_afc, get/set/toggle_squelch (SQL), get/set/inc_squelch_level, get/set/toggle_reverse (Rev), get/set/toggle_lock (Lock), get/set/toggle_rxid (RxID), get/set/toggle_txid (TxID), get_status1, get_status2, get_trx_status, get_trx_state.

Transmitter control. operations: tx, tune, rx, abort, disable_tx, enable_tx, run_macro (value=id), get_max_macro_id, send (text=...).

Keying operations (tx, tune, run_macro, send) require a configured callsign; rx, abort, and disable_tx are always allowed because they take the station off the air. send queues text and transmits, auto-returning to receive by default.

Rig (CAT) control via flrig/Hamlib/RigCAT. operations: get/set_name, set_frequency (value=Hz), get/set_mode (value=name), get_modes, set_modes (value=[...]), get/set_bandwidth, get_bandwidths, set_bandwidths (value=[...]), get/set_notch, take_control, release_control.

Logbook (QSO / contest) fields. operations: get (field=...), set (field=..., value=...), clear, last_record, all_records.

Settable fields: call, name, qth, locator, serial_number, exchange, rst_in, rst_out. Gettable fields also include frequency, time_on/off, serial_number_sent, state, province, country, band, notes, az. last_record / all_records return ADIF.

RX/TX text and data. operations: read (decoded RX text), rx_length, clear_rx, add_tx (value=text), clear_tx, get_rxtx_data, get_rx_data, get_tx_data.

add_tx only stages text in the TX widget; it does not transmit.

Spotting / PSK Reporter. operations: get_auto, set_auto (value=bool), toggle_auto, pskrep_count.

WEFAX (weather fax) mode. operations: state, skip_apt, skip_phasing, tx_abort, end_reception, start_manual_reception, set_adif_log (value=bool), set_max_lines (value=int), get_received_file (value=timeout), send_file (value=[filename, ...]).

send_file transmits and is callsign-gated.

NAVTEX / SitorB mode. operations: get_message (value=timeout seconds), send_message (value=text).

send_message transmits and is callsign-gated.

Escape hatch: call ANY fldigi XML-RPC method by dotted name (e.g. 'rig.get_mode').

Use station with operation 'list_methods' to discover every method the running build supports. Keying methods remain callsign-gated.

Advisory band guidance (experimental, region-aware) — informational / QSY help only.

operations:

• lookup (frequency_hz, optional mode): what the band plan says at a frequency.

• watering_hole (mode, optional band): the preferred calling frequency for a mode.

• move_to_watering_hole (mode): set the dial to that frequency (does NOT transmit).