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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 /thumbnail-personalization-api/v1/universes/{universeId}/personalization/create — openapi

Creates a new active thumbnail personalization configuration for a universe. This deactivates the current active configuration, and the new configuration starts its own statistics.

Endpoint

Method: POST

Path: /thumbnail-personalization-api/v1/universes/{universeId}/personalization/create

Servers:

Parameters

NameLocationRequiredDescription
universeIdpathtrueThe identifier of the universe that owns the configuration.
[
  {
    "name": "universeId",
    "in": "path",
    "description": "The identifier of the universe that owns the configuration.",
    "required": true,
    "schema": {
      "type": "integer",
      "format": "int64"
    }
  }
]

Request Body

The homepage thumbnails to include in the configuration.

{
  "description": "The homepage thumbnails to include in the configuration.",
  "content": {
    "application/json-patch+json": {
      "schema": {
        "allOf": [
          {
            "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
          }
        ],
        "description": "The request to create a thumbnail personalization configuration."
      }
    },
    "application/json": {
      "schema": {
        "allOf": [
          {
            "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
          }
        ],
        "description": "The request to create a thumbnail personalization configuration."
      }
    },
    "text/json": {
      "schema": {
        "allOf": [
          {
            "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
          }
        ],
        "description": "The request to create a thumbnail personalization configuration."
      }
    },
    "application/*+json": {
      "schema": {
        "allOf": [
          {
            "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
          }
        ],
        "description": "The request to create a thumbnail personalization configuration."
      }
    }
  },
  "required": true
}

Responses

StatusDescription
200Success
400Bad Request
401Unauthorized
403Forbidden
500Server Error
{
  "200": {
    "description": "Success",
    "content": {
      "application/json": {
        "schema": {
          "type": "string"
        }
      }
    }
  },
  "400": {
    "description": "Bad Request",
    "content": {
      "application/json": {
        "schema": {
          "type": "string"
        }
      }
    }
  },
  "401": {
    "description": "Unauthorized",
    "content": {
      "application/json": {
        "schema": {
          "type": "string"
        }
      }
    }
  },
  "403": {
    "description": "Forbidden",
    "content": {
      "application/json": {
        "schema": {
          "type": "string"
        }
      }
    }
  },
  "500": {
    "description": "Server Error"
  }
}

Authentication

{
  "security": [
    {
      "roblox-legacy-cookie": []
    },
    {
      "roblox-api-key": []
    },
    {
      "roblox-oauth2": [
        "universe.thumbnail:write"
      ]
    }
  ],
  "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": [
    "Thumbnail Personalization"
  ],
  "summary": "Creates a new active thumbnail personalization configuration for a universe.\r\nThis deactivates the current active configuration, and the new configuration starts its own statistics.",
  "operationId": "ThumbnailPersonalizationApi.HomepageThumbnail_CreateThumbnailPersonalization",
  "parameters": [
    {
      "name": "universeId",
      "in": "path",
      "description": "The identifier of the universe that owns the configuration.",
      "required": true,
      "schema": {
        "type": "integer",
        "format": "int64"
      }
    }
  ],
  "requestBody": {
    "description": "The homepage thumbnails to include in the configuration.",
    "content": {
      "application/json-patch+json": {
        "schema": {
          "allOf": [
            {
              "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
            }
          ],
          "description": "The request to create a thumbnail personalization configuration."
        }
      },
      "application/json": {
        "schema": {
          "allOf": [
            {
              "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
            }
          ],
          "description": "The request to create a thumbnail personalization configuration."
        }
      },
      "text/json": {
        "schema": {
          "allOf": [
            {
              "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
            }
          ],
          "description": "The request to create a thumbnail personalization configuration."
        }
      },
      "application/*+json": {
        "schema": {
          "allOf": [
            {
              "$ref": "#/components/schemas/CreateThumbnailPersonalizationRequest"
            }
          ],
          "description": "The request to create a thumbnail personalization configuration."
        }
      }
    },
    "required": true
  },
  "responses": {
    "200": {
      "description": "Success",
      "content": {
        "application/json": {
          "schema": {
            "type": "string"
          }
        }
      }
    },
    "400": {
      "description": "Bad Request",
      "content": {
        "application/json": {
          "schema": {
            "type": "string"
          }
        }
      }
    },
    "401": {
      "description": "Unauthorized",
      "content": {
        "application/json": {
          "schema": {
            "type": "string"
          }
        }
      }
    },
    "403": {
      "description": "Forbidden",
      "content": {
        "application/json": {
          "schema": {
            "type": "string"
          }
        }
      }
    },
    "500": {
      "description": "Server Error"
    }
  },
  "x-roblox-stability": "EXPERIMENTAL",
  "x-roblox-rate-limits": {
    "perApiKeyOwner": {
      "period": "MINUTE",
      "maxInPeriod": 50
    },
    "perOauth2Authorization": {
      "period": "MINUTE",
      "maxInPeriod": 50
    }
  },
  "x-roblox-scopes": [
    {
      "name": "universe.thumbnail:write",
      "targetResourceSpecifier": "universes",
      "firstPartyOAuthOnly": true
    }
  ],
  "x-roblox-engine-usability": {
    "apiKeyWithHttpService": false
  },
  "security": [
    {
      "roblox-legacy-cookie": []
    },
    {
      "roblox-api-key": []
    },
    {
      "roblox-oauth2": [
        "universe.thumbnail:write"
      ]
    }
  ],
  "externalDocs": {
    "url": "https://create.roblox.com/docs/cloud/reference/features/thumbnail-personalization#ThumbnailPersonalizationApi.HomepageThumbnail_CreateThumbnailPersonalization"
  }
}