Upload custom UI assets

Add MCP server to your AI tool

Allow AI tools and LLMs to interact with the API documentation portal through MCP.

MCP server URL

https://openapi.logto.io/mcp

Standard setup for AI tools providing an mcp.json file

mcp.json 
{
  "Logto API references MCP server": {
    "url": "https://openapi.logto.io/mcp"
  }
}
Close
POST /api/sign-in-exp/default/custom-ui-assets
O auth2

Upload a zip file containing custom web assets such as HTML, CSS, and JavaScript files, then replace the default sign-in experience with the custom UI assets.

multipart/form-data

Body

  • file

    The zip file containing custom web assets such as HTML, CSS, and JavaScript files.

Responses

  • 200 application/json

    An JSON object containing the custom UI assets ID.

    Hide response attribute Show response attribute object
    • customUiAssetId string Required
  • 400

    Bad request. The request body is invalid.

  • 401

    Unauthorized

  • 403

    Bring your UI is not available under the current entitlements, including when the self-hosted license grace period has ended.

  • 500

    Failed to unzip or upload the custom UI assets to storage provider.

POST /api/sign-in-exp/default/custom-ui-assets 
curl \
 --request POST 'https://[tenant_id].logto.app/api/sign-in-exp/default/custom-ui-assets' \
 --header "Authorization: Bearer $ACCESS_TOKEN" \
 --header "Content-Type: multipart/form-data"
Response examples (200) 
{
  "customUiAssetId": "string"
}