Retrieve and paginate Names and Role Provisioning Services (NRPS) membership when the context_memberships_url points to a large roster
domain: imsglobal.org · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Extract the context_memberships_url from the LTI 1.3 id_token NRPS claim after a valid launch
Make an authenticated GET request using the LTI Advantage access token obtained from the platform's OAuth 2.0 token endpoint
Set the Accept header to application/vnd.ims.lti-nrps.v2.membershipcontainer+json
Parse the members array from the response body
Check for a Link response header with rel=next; if present, follow that URL for the next page using the same access token
Continue until no rel=next Link header is returned, then merge all members arrays
Known gotchas
Access tokens for LTI Advantage services are short-lived; cache and reuse within the expiry window but do not hardcode TTLs — read the expires_in value from the token response
The membership container may omit users whose status is Inactive; if you need inactive members, check whether the platform supports a status query parameter
Do not use the id_token's roles claim as a substitute for NRPS data; NRPS returns per-member roles which may differ from the launching user's roles
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