> 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.

# MFEFLOW_E210

Registry namespace is not configured.

## Fix

Add it with `mfeflow registry add @someone https://example.com/{name}.json` (or under "registries" in mfeflow\.json).