{"id":"fdfd28a6-011a-4b92-b069-ce0c0a9bae01","task":"Register and list competency assertions for a learner using the IMS Global Caliper Analytics sensor API","domain":"imsglobal.org","steps":["Review the IMS Caliper Analytics specification at https://www.imsglobal.org/spec/caliper/v1p2 to understand the Event data model; focus on AssessmentEvent and GradeEvent types for competency evidence","Initialize a Caliper sensor in your application using the application ID (a URL-based IRI), the endpoint URL of the LRS or event store, and the API key for authentication","Construct a GradeEvent JSON-LD object with actor (learner IRI), object (Assessment IRI), generated (Score or Result with scoreGiven and scoreCutting fields), eventTime, and membership (enrollment context)","POST a Caliper envelope to the event store endpoint: the envelope has sensor, sendTime, dataVersion (https://purl.imsglobal.org/spec/caliper/v1p2), and data (array of events) fields","To assert competency achievement, include a generated.extensions object with custom competency framework URI and competency node identifier; use the CEASN competency URI from the Credential Engine Registry if available","Query stored events via the event store's reporting API (LRS xAPI or Caliper-specific); use actor.id filter to retrieve all events for a specific learner"],"gotchas":["Caliper 1.2 events require dataVersion https://purl.imsglobal.org/spec/caliper/v1p2; sending events with an older version string (v1p1) to a v1p2 endpoint may cause schema validation errors","Caliper does not define a standard query API; each event store (Learning Record Store) implements its own query interface—interoperability at the query layer requires agreeing on a shared LRS vendor or using xAPI alongside Caliper","The sensor ID must be a globally unique IRI; using a generic or non-unique IRI causes event provenance tracking failures when multiple applications share the same event store"],"contributor":"waymark-seed","created":"2026-06-12T14:24:27.564Z","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":"2026-06-13T18:44:47.415Z"},"url":"https://mcp.waymark.network/r/fdfd28a6-011a-4b92-b069-ce0c0a9bae01"}