This claim is included in LTI messages if any of the Assignment and Grade Services are accessible by the tool in the context of the LTI message. https://www.imsglobal.org/spec/lti-ags/v2p0#assignment-and-grade-service-claim
when an LTI message is launching a resource associated to one and only one lineitem, the claim must include the endpoint URL for accessing the associated line item; in all other cases, this property must be either blank or not included in the claim.
the endpoint URL for accessing the line item container for the current context.
An array of scopes the tool may ask an access token for.
Tool deployment client_id
id of the https://purl.imsglobal.org/spec/lti/claim/resource_link claim
The userId MUST be present and MUST be the same as the resource link LTI parameter 'user_id'.