MCP-UI / MCP Apps

Official MCP extension (SEP-1865, 2026-01). Tools return interactive UI resources via the ui:// scheme; the host renders them inside a sandboxed iframe.

Python

from apogee_ai_comunication import (
    IframeDescriptor, NativeUiProvider, ResourceDescriptor,
)

provider = NativeUiProvider()
provider.register_ui(
    ResourceDescriptor(
        uri="ui://demo/index",
        name="demo",
        mime_type="text/html",
        contents="<h1>hi</h1>",
    )
)
res = await provider.serve("ui://demo/index")
print(IframeDescriptor(src=res.uri).to_html())

NativeUiProvider rejects URIs that do not start with ui:// to enforce the sandboxed-host contract.