LTI Parameters Required for Hypothesis LMS App Integration

LTI Parameters for Hypothesis Application Integration

The Hypothesis LMS application requires a number of LTI parameters to be available in launch requests. See EduAppCenter's LTI POST parameter documentation for further information about these LTI-standard parameters.

Required LTI Parameters

OAuth parameters

These are used to verify the launch request:

• oauth_consumer_key, oauth_shared_secret, oauth_signature_method, oauth_timestamp, oauth_nonce, oauth_version, oauth_signature.

Other required parameters

• lti_message_type, lti_version, resource_link_id: These LTI parameters are required for all LTI requests (not specific to Hypothesis integration). For more information on how our app uses resource_link_id, see this document.
• tool_consumer_instance_guid: This parameter identifies the LMS instance (e.g. institution) making the request and is needed to differentiate users between LMS instances and correctly associate course groups with their LMS instance.
• user_id: This instance-unique, opaque user identifier is used to generate a deterministic Hypothesis username for each LMS user.
• roles: This parameter is used to identify Instructor and Administrator users, who are able to create course-wide groups to hold annotations.
• context_title: This parameter is used to generate the appropriate name for course-wide groups (which hold the course's annotations).
• context_id: Unique ID for the current course; used to identify application resources related to the current course
• launch_presentation_return_url: This URL helps the application know where to return the user after completing an action
• lis_person_name_full, lis_person_name_given, lis_person_name_family: Used to generate human-readable display names for Hypothesis LMS users.

Parameters required for grading support

• lis_outcome_service_url: Location (URL) of service to which grades can be submitted
• lis_result_sourcedid: Opaque identifier provided by the LMS to identify a submission

Unused LTI Parameters

There are a few common LTI parameters that the Hypothesis application does not need currently. It is possible some of these could be needed in the future.

• lis_person_contact_email_primary
• context_type
• context_label
• Any parameter beginning with launch_presentation_, except launch_presentation_return_url
• Any parameter beginning with tool_consumer_instance_ except tool_consumer_instance_guid
• Any parameter beginning with tool_consumer_info_

More Information about LMSes and LTI

Configuring LTI security settings in D2L/Brightspace