We’re building a custom messaging interface to bypass the standard Messenger widget. The goal is to use the Guest API endpoints directly for sending and receiving messages. I’ve got the OAuth2 client credentials flow working fine, and I can fetch user profiles without issue. The problem hits when I try to register a new guest address.
I’m hitting POST /api/v2/conversations/messaging/addresses with the following payload:
{
"address": "custom-client-abc123",
"displayName": "Test User",
"platform": "GENESYS"
}
The request returns a 400 Bad Request. The error response body is pretty sparse:
{
"code": "badRequest",
"message": "Invalid input",
"details": [
{
"code": "invalidInput",
"message": "The provided address format is invalid or not supported by the platform."
}
]
}
I’ve tried changing the address field to a UUID, a simple string, and even an email format. Nothing works. The documentation implies that for the GENESYS platform, the address can be arbitrary, but the validation seems strict. I’ve checked the Content-Type header and it’s set to application/json. I’ve also verified that the client ID has the messaging:guest:create permission scope.
Has anyone successfully registered a guest address via the API without using the widget SDK? I’m wondering if there’s a specific format requirement for the address field that isn’t explicitly stated in the OpenAPI spec. Or is this endpoint still restricted to internal widget usage only? I’ve spent two days debugging this and I’m stuck.