OptionalcumulativeTrue when the param is cumulative (e.g. an energy meter reading).
OptionaldtBackend data type of value (bool | int | float | string).
OptionalkeyBackend param key, "<device_id>.<param_id>".
OptionalnameLegacy alias of key (older swagger examples).
Unix timestamp in milliseconds.
OptionaltzIANA timezone reported by the device for this sample.
Reported param value; its type matches dt.
Raw API time-series sample (snake_case). The backend emits
key; older swagger examples showname— both are tolerated.