generated: '2026-07-27'
method: searched
source: >-
  https://customer-api-user-manuals.data.n3rgy.com/requests/ (Push Notification
  section) and openapi/n3rgy-customer-service-api-v2-openapi.yaml
  (/push/configuration, /push/status).
spec_type: none
asyncapi_published: false
description: >-
  n3rgy DOES operate an event/push surface — "Push Notification" — but publishes
  no AsyncAPI document for it. Instead of polling the reading endpoints, a
  customer registers a single HTTPS endpoint (`uri`) and a per-device-type
  subscription list, and n3rgy pushes to that endpoint when new readings arrive
  for the subscribed utility/reading-type combinations. The configuration and the
  delivery status are both managed through the REST contract, which is what makes
  the surface machine-discoverable at all. What n3rgy does NOT publish is the
  PAYLOAD SCHEMA of the pushed message, nor a signing/verification scheme, nor a
  retry policy — so no AsyncAPI document has been generated here; fabricating one
  would invent a message contract that does not exist. The delivery-status
  endpoint (GET /push/status) is the only feedback channel, returning the last
  HTTP status and response body n3rgy saw from the subscriber.

subscription_model:
  style: single global endpoint per customer, subscribed by device type + utility type
  registration: POST /push/configuration
  endpoint_field: uri
  scope: customer account (one URI for the whole account, not per property)
  device_types:
    - name: esme
      label: Electricity Smart Metering Equipment
      utility_types: [IMPORT, EXPORT, TARIFF]
    - name: gsme
      label: Gas Smart Metering Equipment
      utility_types: [IMPORT, TARIFF]
  replace_semantics: >-
    POST /push/configuration REPLACES all existing configuration. Sending an
    empty body resets both esme and gsme lists. Setting esme or gsme to an empty
    list removes those configurations. Setting `uri` to empty does NOT remove the
    registered endpoint.
  partial_validation: >-
    "If the entire body is invalid, an error is returned... If only a few entries
    are invalid, they are highlighted in the response and the process continues to
    the valid entries."

events:
  - name: reading available
    trigger: >-
      A new reading of a subscribed reading type becomes available for a device
      type the customer has subscribed. The developer guide documents the
      SUBSCRIPTION dimensions (device type x utility type) but not a named event
      catalogue.
    subscribed_by:
      - {device_type: esme, utility_type: IMPORT}
      - {device_type: esme, utility_type: EXPORT}
      - {device_type: esme, utility_type: TARIFF}
      - {device_type: gsme, utility_type: IMPORT}
      - {device_type: gsme, utility_type: TARIFF}
    payload_schema: not published
    delivery: HTTP POST to the customer-registered uri
    signing: not published
    retry_policy: not published

management_operations:
  - operationId: GetPushNotificationConfiguration
    method: GET
    path: /push/configuration
    summary: Read the current push configuration
    response_example: |
      {
        "pushNotificationURL": "endpoint.com",
        "deviceConfigurations": {
          "ELECTRICITY": ["IMPORT", "TARIFF"]
        }
      }
  - operationId: EditPushNotificationConfiguration
    method: POST
    path: /push/configuration
    summary: Create or replace the push configuration
    success_status: 204
    request_example: |
      {
        "uri": "www.dummy.url.com",
        "esme": ["IMPORT", "TARIFF"],
        "gsme": ["IMPORT"]
      }
    schema: PushNotificationBodyRequest
  - operationId: DeletePushNotificationConfiguration
    method: DELETE
    path: /push/configuration
    summary: Delete the push configuration
  - operationId: RetrievePushNotificationStatus
    method: GET
    path: /push/status
    summary: Read the outcome of the most recent delivery attempt
    response_example: |
      {
        "lastHttpStatus": "200",
        "lastResponse": "Response Body obtained if any exists.",
        "date": "2024-06-02T12:00:00.0000"
      }
    errors:
      - {status: 404, message: No records for push notification status found at this time.}

subscriber_requirements:
  - Expose a public HTTPS endpoint that accepts POST.
  - >-
    Return a 2xx quickly — n3rgy records the last HTTP status and response body
    and exposes them via GET /push/status; that is the only delivery telemetry.
  - >-
    Do not rely on a signature: n3rgy publishes no webhook signing secret or
    signature header. Treat the pushed payload as untrusted and re-fetch
    authoritative data with RetrieveDataForReadingType.

gaps:
  - No AsyncAPI (or any) machine-readable description of the pushed message.
  - No published payload schema, event name, or event id.
  - No signing / verification mechanism documented.
  - No retry, backoff or dead-letter policy documented.
  - >-
    One endpoint per customer account — no per-property or per-MPxN routing, so
    subscribers must fan out themselves.

history:
  - {version: '1.12', change: Push Notification API specification added to the developer guide}
  - {version: '1.15', change: Push Notification specification enhanced}

cross_references:
  openapi: openapi/n3rgy-customer-service-api-v2-openapi.yaml
  conventions: conventions/n3rgy-conventions.yml
  errors: errors/n3rgy-problem-types.yml