Send every 30–60s while the app is in the foreground and online. Used for:
  • Marking the user as “active” for the leaderboard.
  • Feeding the anti-sybil quality signal (battery / network diversity).
  • Warming the server-side profile cache.

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Request

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Fields

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string
required
Must match a previously-registered device.
​
string
required
User address owning the device.
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number
Battery level 0.0–1.0.
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boolean
​
boolean
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string
"wifi", "cellular-4g", "cellular-5g", "ethernet", "unknown".

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Response — 200 OK