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Source: Roblox Creator Hub · CC BY 4.0 · View source · Code samples: MIT Imported 2026-10-03. Formatting adapted for this site.

POST /v1/universes/{universeId}/configuration/playtesters — openapi

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

Endpoint

Method: POST

Path: /v1/universes/{universeId}/configuration/playtesters

Servers:

Parameters

NameLocationRequiredDescription
universeIdpathtrueThe universe Id.
 
[
  {
    "in": "path",
    "name": "universeId",
    "description": "The universe Id.",
    "required": true,
    "schema": {
      "type": "integer",
      "format": "int64"
    }
  }
]

Request Body

The playtesters to add.

{
  "content": {
    "application/json": {
      "schema": {
        "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersRequest"
      }
    },
    "text/json": {
      "schema": {
        "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersRequest"
      }
    }
  },
  "description": "The playtesters to add.",
  "required": true
}

Responses

StatusDescription
200OK
4001: 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.
4010: Authorization has been denied for this request.
4030: Token Validation Failed 2: You are not authorized to configure this universe.
 
{
  "200": {
    "description": "OK",
    "content": {
      "application/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersResponse"
        }
      },
      "text/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersResponse"
        }
      }
    }
  },
  "400": {
    "description": "1: The universe does not exist.\r\n48: The playtesters list is missing or empty.\r\n49: Too many playtesters were specified in a single request.\r\n51: One or more playtesters cannot be added due to safety restrictions."
  },
  "401": {
    "description": "0: Authorization has been denied for this request."
  },
  "403": {
    "description": "0: Token Validation Failed\r\n2: You are not authorized to configure this universe."
  }
}

Authentication

{
  "security": [
    {
      "roblox-legacy-cookie": []
    }
  ],
  "securitySchemes": {
    "roblox-api-key": {
      "type": "apiKey",
      "description": "A configurable key that allows granular access to Roblox resources. See https://create.roblox.com/docs/cloud/auth/api-keys for more information.",
      "name": "x-api-key",
      "in": "header"
    },
    "roblox-legacy-cookie": {
      "type": "apiKey",
      "description": "A browser cookie that represents the identity of a Roblox user. DO NOT SHARE THIS. Sharing this will allow someone to log in as you and to steal your Robux and items. We do not recommend using cookies to call endpoints. When possible, use API keys with the x-api-key header or OAuth 2.0 instead for authentication.",
      "in": "cookie",
      "name": ".ROBLOSECURITY"
    },
    "roblox-oauth2": {
      "type": "oauth2",
      "description": "Build or authorize apps to access Roblox resources. See https://create.roblox.com/docs/cloud/auth/oauth2-overview for more information.",
      "flows": {
        "authorizationCode": {
          "authorizationUrl": "https://apis.roblox.com/oauth/v1/authorize",
          "tokenUrl": "https://apis.roblox.com/oauth/v1/token",
          "refreshUrl": "https://apis.roblox.com/oauth/v1/token",
          "scopes": {}
        }
      }
    }
  }
}

Complete Operation Definition

{
  "tags": [
    "Universes"
  ],
  "summary": "Add playtesters to an owned universe. Existing ids are ignored (additive union).",
  "parameters": [
    {
      "in": "path",
      "name": "universeId",
      "description": "The universe Id.",
      "required": true,
      "schema": {
        "type": "integer",
        "format": "int64"
      }
    }
  ],
  "requestBody": {
    "content": {
      "application/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersRequest"
        }
      },
      "text/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersRequest"
        }
      }
    },
    "description": "The playtesters to add.",
    "required": true
  },
  "responses": {
    "200": {
      "description": "OK",
      "content": {
        "application/json": {
          "schema": {
            "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersResponse"
          }
        },
        "text/json": {
          "schema": {
            "$ref": "#/components/schemas/Roblox.Api.Develop.Models.PlaytestersResponse"
          }
        }
      }
    },
    "400": {
      "description": "1: The universe does not exist.\r\n48: The playtesters list is missing or empty.\r\n49: Too many playtesters were specified in a single request.\r\n51: One or more playtesters cannot be added due to safety restrictions."
    },
    "401": {
      "description": "0: Authorization has been denied for this request."
    },
    "403": {
      "description": "0: Token Validation Failed\r\n2: You are not authorized to configure this universe."
    }
  },
  "servers": [
    {
      "url": "https://develop.roblox.com"
    }
  ],
  "x-roblox-engine-usability": {
    "apiKeyWithHttpService": false
  },
  "security": [
    {
      "roblox-legacy-cookie": []
    }
  ],
  "externalDocs": {
    "url": "https://create.roblox.com/docs/cloud/reference/features/universes#develop_post_v1_universes__universeId__configuration_playtesters"
  }
}