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Passports

Get latest measurements

Returns the most recent measurement for each accepted Annex XIII point 4 use-data field. The response is `{ data: { <fieldKey>: LatestMeasurement | null } }` — every accepted key is always present; a key is `null` when no measurement has been received for that field yet. A `LatestMeasurement` carries `value`, `measuredAt`, and optionally `unit` and `externalId`. **Battery passports only** — a non-battery passport returns 422 `not_a_battery`.

GET/api/v1/passports/{id}/measurements/latest
Download OpenAPI 3.1
GET/api/v1/passports/{id}/measurements/latest

Get latest measurements

Returns the most recent measurement for each accepted Annex XIII point 4 use-data field. The response is `{ data: { <fieldKey>: LatestMeasurement | null } }` — every accepted key is always present; a key is `null` when no measurement has been received for that field yet. A `LatestMeasurement` carries `value`, `measuredAt`, and optionally `unit` and `externalId`. **Battery passports only** — a non-battery passport returns 422 `not_a_battery`.

This endpoint reflects the same values the passport viewer shows for the dynamic data section. `dynamicDataAsOf` on the passport is the `measuredAt` of the newest measurement across all fields — this endpoint lets you retrieve each field's latest value and when it was taken. An alternate addressing form exists at `GET /api/v1/passports/by-serial/{serial}/measurements/latest` with the same response shape. If a serial is not unique within your account, add `?gtin=<gtin>` to disambiguate. Read-only; OAuth scope: `passports:read`.

Path parameters

  • idrequired

    ObjectId

    Passport ID.

Headers

  • Authorizationrequired

    string

    `Bearer <token>` — either a `tp_` API key (Developer → API Keys; simplest, for server-to-server) or an OAuth 2.0 access token (Developer → OAuth Apps; for user-authorized apps, scoped + revocable). The Authentication page has the full OAuth flow and scope list.

    e.g. Bearer tp_REDACTED_xxxxxxxxxxxx

Request

curl -sS \
  https://app.tracepass.eu/api/v1/passports/6650b2c3d4e5f6a7b8c9d0e1/measurements/latest \
  -H "Authorization: Bearer tp_REDACTED_xxxxxxxxxxxx"

Response

{
  "data": {
    "stateOfHealth": {
      "value": 96.4,
      "measuredAt": "2027-03-01T06:00:00Z",
      "externalId": "bms-7781-2027-03-01"
    },
    "numberOfFullEquivalentChargingCycles": {
      "value": 112,
      "measuredAt": "2027-03-01T06:00:00Z"
    },
    "currentStateOfCharge": null,
    "capacityFade": null,
    "powerFade": null,
    "stateOfCertifiedEnergy": null,
    "remainingCapacity": null,
    "remainingPowerCapability": null,
    "remainingRoundTripEfficiency": null,
    "evolutionOfSelfDischargeRate": null,
    "currentInternalResistancePack": null,
    "internalResistanceIncrease": null,
    "dynamicRatedCapacity": null,
    "dynamicPowerCapability": null,
    "dynamicInternalResistance": null,
    "dynamicEnergyRoundTripEfficiency": null,
    "dynamicExpectedLifetimeCycles": null,
    "numberOfChargingEvents": null,
    "negativeEvents": null,
    "temperatureConditionsHistorical": null
  }
}

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