ZV-2026-1169 · 2026-09-18 · mcp.artsdata.ca
mcp.artsdata.ca: Field additional_type was removed from get_entity output; consumers reading it will break.
breaking
What changed
Field additional_type was removed from get_entity output; consumers reading it will break.
What to do
If your agents call mcp.artsdata.ca, pin the new snapshot, patch the affected call sites, and let a green contract check confirm the fix. If you don't use the changed tools, nothing is required, but the rest of the ecosystem just learned about it at the same moment you did.
The redline
− additional_type Field additional_type was removed from get_entity output; consumers reading it will break. + has_event_type_concept Field has_event_type_concept was added to get_entity output. − Tool to search for events in the Artsdata knowledge graph by place, artist, organization, … + Tool to search for events in the Artsdata knowledge graph by place, artist, organization, … search_events