[amazonechocontrol] /PROXY/api/notifications (failed with code 400)

[jaywiseman1971]

Version 4.3.9 has a rouge path issue in it now after the change of the authentication method ( #19690 )

Version 4.3.8 references this path --> /amazonechocontrol/account1/PROXY/api/notifications

In a browser this URL now returns this with 4.3.9

https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
Try again

The 4.3.9 binding is logging this error consistently now.

2025-11-24 07:24:00.252 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:34:59.373 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:35:20.014 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:49:11.693 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:49:29.429 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:54:05.812 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 07:54:22.749 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 08:01:36.174 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 08:01:53.369 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 08:46:04.687 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 09:14:07.109 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 10:14:08.541 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 11:14:09.378 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 12:14:09.230 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 13:14:10.045 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 14:14:10.614 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 15:14:07.455 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 16:13:38.638 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 17:13:38.725 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 18:13:40.362 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 18:14:07.459 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 19:14:10.516 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 20:14:09.245 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 21:13:38.550 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 22:02:20.803 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 22:20:21.490 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 23:01:28.038 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 23:01:44.727 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-24 23:02:31.549 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 00:02:31.620 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 01:02:31.989 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 01:10:28.869 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 01:10:45.828 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 02:10:46.787 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 03:10:48.616 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 04:10:47.578 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 05:10:47.855 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request
2025-11-25 06:10:49.043 [WARN ] [g.amazonechocontrol.internal.connection.Connection] - Failed to get notifications: https://na-api-alexa.amazon.com/api/notifications failed with code 400: Bad Request

[openhab-bot]

This issue has been mentioned on openHAB Community. There might be relevant details there:

https://community.openhab.org/t/amazonechocontrol-bugs-in-4-3-9-version/167369/1

[jaywiseman1971]

From Grok.

The path /PROXY/api/notifications appears to be a legacy or proxy endpoint used in older integrations (e.g., community projects like Home Assistant's Alexa Media Player or custom reverse proxies for local device notifications) to fetch or manage Alexa notifications via an internal Amazon API. As of November 2025, with the deprecation of v2 Smart Home APIs and related legacy services, this path is no longer supported directly. Integrations relying on it (often under domains like alexa.amazon.com or regional variants) must migrate to modern, versioned endpoints.
Recommended Replacement
The primary replacement for handling notifications—whether proactive events, device alerts, or smart home state changes—is the Alexa Notifications REST API (for sending) or Proactive Events API (for skill-based notifications). These use the following base URL and path:

Primary endpoint: https://api.amazonalexa.com/v3/notifications
Purpose: Send notifications (e.g., device alerts, announcements, or persistent visual alerts) to Alexa-enabled devices or units. This replaces legacy proxy paths for notifications, including device chimes, voice announcements, or screen banners. For querying existing notifications, use /v3/notifications/query.
HTTP Method: POST (for sending) or GET (for querying).
Authentication: Bearer token from Login with Amazon (LWA) OAuth 2.0.
Regional Variations:
Europe (EU): https://api.eu.amazonalexa.com/v3/notifications
Far East (FE): https://api.fe.amazonalexa.com/v3/notifications

Example Request (sending a device notification to units):textPOST /v3/notifications HTTP/1.1
Host: api.amazonalexa.com
Authorization: Bearer {your-access-token}
Content-Type: application/json

{
"recipients": [
{
"type": "Unit",
"id": "amzn1.alexa.unit.did.101"
}
],
"notification": {
"variants": [
{
"type": "DeviceNotification",
"content": {
"variants": [
{
"type": "SpokenText",
"values": [
{
"locale": "en-US",
"text": "Your package has arrived."
}
]
}
]
}
}
]
}
}
Response: HTTP 202 Accepted on success (asynchronous processing), or an error (e.g., 400 Bad Request for invalid payloads).
Notification Types Supported:
DeviceNotification: Chime and ring for non-screen devices; banner for screen devices.
Announcement: Voice playback (with optional screen text).
PersistentVisualAlert: On-screen alert until dismissed (screens only).

For smart home-specific proactive notifications (e.g., state changes like a door opening), use the Smart Home v3 Event Gateway instead:

Endpoint: https://api.amazonalexa.com/v3/events
Purpose: Send ChangeReport events to notify Alexa of device states, which can trigger app notifications. See the previous response for an example.

Migration Notes

Deprecation Context: Legacy proxy endpoints like /api/notifications (often wrapped in /PROXY) were part of pre-v3 services and are disabled post-November 1, 2025. They may return 400/404 errors or be inaccessible.
Key Changes:
Shift from unversioned/internal paths to explicit /v3/ endpoints.
Notifications now target "units" (e.g., rooms or properties) or endpoints (devices).
For Alexa Smart Properties (hospitality/residential), this API is restricted to registered partners.

Testing: Use the Alexa Developer Console's simulation tools or the Proactive Events test endpoints for validation.
Alternatives for Custom Proxies: If this path was for local network access (e.g., via ngrok or Node-RED), reconfigure your proxy to forward to the /v3/notifications endpoint. Avoid direct internal Amazon calls; use official APIs.
Documentation: Refer to the Notifications REST API Reference and Proactive Events API for schemas.

If this path is from a specific integration (e.g., Alexa Media Player) or context (e.g., reminders vs. device alerts), provide more details for a more precise recommendation.