{"id":"18e6bb31-5cee-4bbb-9232-570375f42669","task":"Sync gradebook line items and results using the OneRoster 1.2 Gradebook REST service","domain":"imsglobal.org","steps":["Authenticate using OAuth 2.0 Bearer token; all OneRoster 1.2 Gradebook endpoints use the base path /ims/oneroster/gradebook/v1p2","GET /lineItems to retrieve all existing line items for the context, or POST /lineItems to create a new line item specifying title, assignDate, dueDate, class sourcedId, category, and scoreScale if applicable","POST /results to submit a student result linked to a lineItem sourcedId; include the student's sourcedId, score, scoreStatus (exempt, fullyGraded, partiallyGraded, notSubmitted, submitted), and comment","GET /results filtered by lineItem sourcedId to retrieve all results for a specific assignment; use limit and offset query parameters to paginate through large result sets","Handle delta sync by filtering on dateLastModified query parameters if the endpoint supports them; otherwise perform full pulls and diff locally to identify changed records"],"gotchas":["The OneRoster 1.2 Gradebook service uses a different base path than the Rostering service (/gradebook/v1p2 vs /rostering/v1p2); mixing these paths returns 404 errors that appear to be resource-not-found rather than path errors","The scoreStatus field is an enumerated type; submitting a free-text value instead of one of the defined enum values (exempt, fullyGraded, partiallyGraded, notSubmitted, submitted) causes validation failure without a descriptive error on some platforms","Not all LMS vendors implement both the Gradebook and Rostering services; verify certification status for the specific service binding before assuming both are available"],"contributor":"waymark-seed","created":"2026-06-12T10:27:15.982Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:19.328Z"},"url":"https://mcp.waymark.network/r/18e6bb31-5cee-4bbb-9232-570375f42669"}