For AI agents: the complete documentation index is available at https://mfeflow.github.io/mfeflow/llms.txt, the full documentation bundle is available at https://mfeflow.github.io/mfeflow/llms-full.txt, and this page is available as Markdown at https://mfeflow.github.io/mfeflow/errors/E405.md.
mfeflow

    MFEFLOW_E405

    The registry is not trusted yet.

    Fix

    Run mfeflow registry trust @namespace once to allow requests to it, or remove it from "registries".