Messaging (v1)

OpenCloud v1 reference for Messaging.

Base URL: https://apis.roblox.com/messaging-service

Endpoints

Method	Path	Name
POST	/v1/universes/:universeId/topics/:topic	postUniversesUniverseIdTopicsTopic (deprecated)

postUniversesUniverseIdTopicsTopic deprecated

POST /v1/universes/:universeId/topics/:topic

Publish a message to a pre-defined topic of an experience, with the size of the message up to 1,024 characters (1 KB). Requires the Publish permission for API keys and the universe-messaging-service:publish scope for OAuth 2.0 apps. See Cross-server messaging for defining and subscribing users to a topic.

See: POST https://apis.roblox.com/cloud/v2/universes/{universe_id}:publishMessage

Scopes: universe-messaging-service:publish

Usage

import { fetchApi } from 'rozod';
import { postUniversesUniverseIdTopicsTopic } from 'rozod/opencloud/v1/messaging';

const data = await fetchApi(postUniversesUniverseIdTopicsTopic, {
  universeId: /* integer */,
  topic: /* string \| null */,
  body: { /* ... */ }
});

Parameters

Name	Type	Required	Description
universeId	integer	Yes	The identifier of the experience in which you want to send your messages to. You can copy your experience’s Universe ID on Creator Dashboard .
topic	string | null	Yes	The topic that you want to publish your message to, with up to 80 characters.

Request Body

Field	Type	Description
message	string | null

Response

Type: unknown

Errors

Status	Description
400	Invalid request.
401	The API key is not valid for this operation / You don't have the authorization.
403	Publishing is not allowed on this experience.
500	Server internal error / Unknown error.

---