Read and write device points through the VOLTTRON VUI devices endpoint
domain: volttron.readthedocs.io · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
GET /vui/platforms/:platform/devices/:topic with a partial topic (e.g. campus/building) to get route_options listing sub-devices, or a full topic to get point values directly
Add read-all=true to force full point data even from a partial topic, and use routes/writability/values/config query flags to control which fields come back
PUT /vui/platforms/:platform/devices/:topic/ with a JSON body {"value": <value>} to write a single point; add confirm-values=true to have the API read back the value after writing
To write multiple points matched by a partial topic or the '-' wildcard in one call, explicitly pass write-all=true or the API returns 405 Method Not Allowed
DELETE the same path to reset a point to its default/released value, again requiring write-all=true for multi-point resets
Known gotchas
Attempting to write a non-writable point, or a multi-point write without write-all=true, returns 405 Method Not Allowed rather than a partial success
The wildcard '-' only matches an entire topic segment (e.g. /:campus/-/:device) - it cannot be combined with other characters within the same segment
A DELETE reverts all successfully-written points in the request if any single point's write fails, so a multi-point reset is all-or-nothing
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