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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/user-localization-settings/universe/{universeId} — openapi

Set user localization settings for universe.

Endpoint

Method: POST

Path: /v1/user-localization-settings/universe/{universeId}

Servers:

Parameters

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

Request Body

The request body

{
  "content": {
    "application/json": {
      "schema": {
        "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Request.SetUserLocalizationSettingsRequest"
      }
    },
    "text/json": {
      "schema": {
        "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Request.SetUserLocalizationSettingsRequest"
      }
    }
  },
  "description": "The request body",
  "required": true
}

Responses

StatusDescription
200OK
40014: Invalid game id 22: Invalid language code
4010: Authorization has been denied for this request.
4030: Token Validation Failed
50317: Feature is disabled
 
{
  "200": {
    "description": "OK",
    "content": {
      "application/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Response.SetUserLocalizationSettingsResponse"
        }
      },
      "text/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Response.SetUserLocalizationSettingsResponse"
        }
      }
    }
  },
  "400": {
    "description": "14: Invalid game id\r\n22: Invalid language code"
  },
  "401": {
    "description": "0: Authorization has been denied for this request."
  },
  "403": {
    "description": "0: Token Validation Failed"
  },
  "503": {
    "description": "17: Feature is disabled"
  }
}

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": [
    "Localization",
    "Universes"
  ],
  "summary": "Set user localization settings for universe.",
  "parameters": [
    {
      "in": "path",
      "name": "universeId",
      "description": "The universe's ID.",
      "required": true,
      "schema": {
        "type": "integer",
        "format": "int64"
      }
    }
  ],
  "requestBody": {
    "content": {
      "application/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Request.SetUserLocalizationSettingsRequest"
        }
      },
      "text/json": {
        "schema": {
          "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Request.SetUserLocalizationSettingsRequest"
        }
      }
    },
    "description": "The request body",
    "required": true
  },
  "responses": {
    "200": {
      "description": "OK",
      "content": {
        "application/json": {
          "schema": {
            "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Response.SetUserLocalizationSettingsResponse"
          }
        },
        "text/json": {
          "schema": {
            "$ref": "#/components/schemas/Roblox.GameInternationalization.Api.Models.Response.SetUserLocalizationSettingsResponse"
          }
        }
      }
    },
    "400": {
      "description": "14: Invalid game id\r\n22: Invalid language code"
    },
    "401": {
      "description": "0: Authorization has been denied for this request."
    },
    "403": {
      "description": "0: Token Validation Failed"
    },
    "503": {
      "description": "17: Feature is disabled"
    }
  },
  "servers": [
    {
      "url": "https://gameinternationalization.roblox.com"
    }
  ],
  "x-roblox-stability": "EXPERIMENTAL",
  "x-roblox-engine-usability": {
    "apiKeyWithHttpService": false
  },
  "security": [
    {
      "roblox-legacy-cookie": []
    }
  ],
  "externalDocs": {
    "url": "https://create.roblox.com/docs/cloud/reference/features/localization#gameinternationalization_post_v1_user_localization_settings_universe__universeId_"
  }
}