Get relationship row by id
Returns one relationship by row id, including historic and non-primary rows. The response includes isCurrent and isPrimary so hidden-row cause is explicit.
Authentication
Client secret for read-only service-to-service access (no writes)
Path parameters
Integer entity_relationship.id row id from EntityRelationship.id, not an entity UUID.
Response
Joined entity on the other side of this relationship — read-only display projection. Writes identify both sides only via the flat sourceEntityId and targetEntityId UUIDs, never a nested entity object.
Canonical relationship type, one of: acceleratorParticipant, acquirer, affinity, calculated, competingProductService, competitor, customer, fundManagerFirm, parent, productService, serviceProvider, similarCompany, spinOffFrom, successor. Similarity endpoint rows use stored relationship types when a curation row exists and calculated when the row comes from semantic/vector similarity.
Competitive comparison signals for the joined entity when it is a product/service provider — sells-to, pricing model, ownership, funding, and website. Null for every other joined entity. Lets comparison surfaces render provider columns without a second per-provider fetch.
Relationship-specific detail. acceleratorParticipant rows use batch=<label>, or program=<name>; batch=<label> only for a distinct sub-program. program= never repeats the accelerator name or the batch, and batch= never contains the accelerator name — the row already points to the accelerator entity.
Integer entity_relationship.id row id, not an entity UUID
Current-state curation flag for this relationship row. Default relationship reads return only rows where isCurrent=true and isPrimary=true.
Primary/renderable curation flag for this relationship row. isCurrent=false or isPrimary=false hides the row from default relationship reads.
Canonical source entity UUID stored on the relationship row. Compare with the requested entity id and /v1/entities/relationships/types sourceRole/targetRole to orient directional relationships such as parent.
Canonical target entity UUID stored on the relationship row. Compare with the requested entity id and /v1/entities/relationships/types sourceRole/targetRole to orient directional relationships such as parent.