get_entity_tool
Use get_entity_tool when the agent has an entity target and needs the full stored payload, with optional stub hydration.
#Signature
get_entity_tool(entity_id, resolve=false) -> JSON string
entity_id accepts a full UUID, unambiguous UUID prefix, platform reference, or indexed HTTP(S) URL. The tool reads existing graph data and does not create an entity for an unknown URL.
When resolve=true and the entity has no title or content, the tool fetches the stub through its owning connector, persists the returned batch, and returns the refreshed entity. Direct resolution does not update observed_at.