- Parse/contract failure: repair source or identifiers.
- Import failure: use the startup traceback and ComfyUI's exact Python.
- Clean import but absent
/object_info: repair registration or install path. - Registered but execution fails: inspect traceback, shapes/types, and exact dependency versions.
- Search unavailable: continue only if local catalog and documented API settle the contract; otherwise stop instead of inventing an integration.
Restart and rediscover after every repair.