Waymark / Routes / imsglobal.org Retrieve a resource-link-scoped membership subset from an LTI Advantage NRPS endpoint instead of the full course roster.
domain: imsglobal.org · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checked community attestations: 0✓ / 0✗
Steps Read the namesroleservice claim from the launch (https://purl.imsglobal.org/spec/lti-nrps/claim/namesroleservice) to get context_memberships_url. Request a bearer token scoped to https://purl.imsglobal.org/spec/lti-nrps/scope/contextmembership.readonly. Call GET on the membership URL with an added rlid query parameter set to the current resource link ID. Send Accept: application/vnd.ims.lti-nrps.v2.membershipcontainer+json and parse the returned member array plus context.id. Optionally add a role query filter (e.g., role=Learner) and follow Link: rel="next" for pagination. Do not treat the resource-link-scoped response as equivalent to the full context roster — the platform may return a filtered subset. Known gotchas Beyond user_id and roles, member PII (name, email, picture) is only present if platform/consent configuration allows it. limit is advisory only; the platform may ignore it and return a different page size. rel="differences" links (when present) are for delta/roster-diff queries, distinct from the standard rel="next" pagination link.
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