# OpenAI: Response values are no longer constrained

> Source: <https://driftwatch.et/changes/openai-2026-11-09-755921ab>
> Published: 2026-11-09 21:04:25+00:00

## What changed

The documented set of values is gone, so anything can appear. Every exhaustive switch and generated enum over this field is now incomplete.

Affects `WebhookEndpointBody` reachable from 3 operations.

any value can now appear

## Who is affected

Code that reads OpenAI's WebhookEndpointBody objects, used by 3 OpenAI operations.

## Before and after

| Where | Before | After | 
|---|---|---|
| WebhookEndpointBody.object | "webhook_endpoint" | absent | 

Based on OpenAI’s published API specification. [How severity is decided](https://driftwatch.et/method).