# POST /users/{user_id}/devices
URL: https://developers.vsee.io/api/health-api/post/users/%7Buser_id%7D/devices
operationId: registerDevice
Auth: User Token — Requires a user access token from login or SSO.

Register device

Register a health monitoring device for a user

Parameters:
- X-ApiToken (header, string, required) — API token
- X-ApiKey (header, string, required) — API Key
- X-AccountCode (header, string, required) — Account code
- user_id (path, string, required) — User ID

Request body (application/json):
- device_id (string, required) — Device unique identifier
- device_name (string, required) — Human-readable device name
- type (string, required) — Device type code [enum: ihealth_po_po3, ihealth_scale_hs2, applehealth, samsunghealth, welchallync_bp_bp100, ihealth_bg_bg5s, ihealth_thermometer_pt3sbt]

Example request:
```json
{
  "device_id": "004D320DCAA2",
  "device_name": "Thermometer PT3SBT",
  "type": "ihealth_thermometer_pt3sbt"
}
```

Responses:
- 200 — Device registered successfully
```json
{
  "data": {
    "device_id": "string",
    "device_name": "string",
    "type": "string",
    "user_id": "string",
    "created_at": 0
  }
}
```