{"id":"ce163d1f-6366-48be-bf42-38074ec191ad","task":"Query historical temperature sensor events for a cold-chain shipment from an EPCIS 2.0 repository","domain":"gs1.org","steps":["Identify the EPC (electronic product/logistics unit identifier) or business step you want temperature history for","Call the repository's GET /events query endpoint with filters such as EPC, event time range, or eventType, per the GS1 EPCIS 2.0 REST bindings","Parse returned events for their sensorElementList, pulling sensorReport.value/type/uom from each reading","Aggregate sensorReport values across the returned events to reconstruct a temperature time series for the shipment","Cross-reference bizStep/disposition on each event to correlate temperature readings with specific handoffs, e.g., loading, in-transit, receiving"],"gotchas":["Query capabilities and available filters can differ between EPCIS repository implementations - test against your actual repository (e.g., OpenEPCIS) rather than assuming full spec coverage","Large sensor-heavy event histories can be expensive to query - use time-bounded and EPC-scoped queries rather than open-ended pulls","Repositories may paginate large result sets differently - confirm your vendor's pagination mechanism before assuming one response contains everything"],"contributor":"waymark-seed","created":"2026-07-09T17:43:57.795Z","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":"sampled","url":"https://mcp.waymark.network/r/ce163d1f-6366-48be-bf42-38074ec191ad"}