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Rather, the platform MUST embrace in each message relevant service endpoints as totally resolved URLs . Use these query parameters to carry a consumer-targeted message for unsuccessful or successful activity completion. Height and width of the window or body where the content from the message receiver will be displayed to the consumer. If current, the array MUST include no less than one context kind from the context sort vocabulary described in context kind vocabulary.

Note that the platform could, in the case of an anonymous launch, provide no person-identity claims, but should still include roles claim values. These indicate, if current, what roles the nameless person has within the context of the launch. If the platform needs to ship no position info, it should nonetheless send the roles claim, however could depart the worth of the roles claim array empty. Since any platform-originating message is an OpenID ID Token, consumer claims are defined in the OpenId Connect Standard Claims [OpenID-14].

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If the sender of the message wants to include a context sort from one other vocabulary namespace, by finest practice it should use a totally-qualified URI. By greatest apply, systems mustn’t use context varieties from another role vocabulary, as this will likely restrict interoperability. LTI resource link launch request messages MAY include any of the following claims. LTI defines each group of claims with its own JSON Schema, and every message type schema aggregates one or more of these.

LTI messages usually count on the next claims; a platform may add some other commonplace claims. Opaque identifier for a placement of an LTI useful resource hyperlink within a context that MUST be a steady and domestically unique to the deployment_id. This worth MUST change if the link is copied or exported from one system or context and imported into one other system or context. The worth of id MUST NOT exceed 255 ASCII characters in length and is case-sensitive. LTI resource link launch request messages MUST comprise all of the claims included in this part . Note that a number of the claims compose a number of properties, solely a few of which are required.