---
title: "Add playtesters to an owned universe. Existing ids are ignored (additive union)."
method: POST
path: "/v1/universes/{universeId}/configuration/playtesters"
tags: ["Universes"]
---

# Add playtesters to an owned universe. Existing ids are ignored (additive union).

`POST /v1/universes/{universeId}/configuration/playtesters`

## Request

- Base URL: `https://develop.roblox.com`
- URL: `https://develop.roblox.com/v1/universes/{universeId}/configuration/playtesters`
- Auth: API key in cookie `.ROBLOSECURITY`

## Path parameters

- `universeId` integer, required

## Request body

- RobloxApiDevelopModelsPlaytestersRequest: Request model for adding or removing playtesters.
  - `playtesters` integer[]: The user ids to add or remove as playtesters for this universe.

## Response `200`

OK

- RobloxApiDevelopModelsPlaytestersResponse: Response model for playtester list endpoints.
  - `playtesters` integer[]: The user ids that are playtesters for this universe.

## Other responses

- `400`: 1: The universe does not exist. 48: The playtesters list is missing or empty. 49: Too many playtesters were specified in a single request. 51: One or more playtesters cannot be added due to safety restrictions.
- `401`: 0: Authorization has been denied for this request.
- `403`: 0: Token Validation Failed 2: You are not authorized to configure this universe.

---

[API](https://skmtc.dev/roblox/apis/roblox-api.md) - [All operations](https://skmtc.dev/roblox/apis/roblox-api/llms.txt) - [OpenAPI document](https://skmtc.dev/roblox/apis/roblox-api/revisions/bcfdc20689cd?raw)