Hometrack Climate API (v2)
Five GET operations returning climate and energy risk data for a single property, keyed on UPRN — the Unique Property Reference Number, the UK's government-issued national property identifier: /epc-hometrack/{uprn} returns EPC (energy performance) data, /flood-twinn/{uprn} returns flood data, /ground-terrafirma/{uprn} returns ground data, /ground-subsidence-twinn/{uprn} returns subsidence score data and /ground-coastalerosion-twinn/{uprn} returns coastal erosion data. Four of the five take a dataVersion parameter, and the supplier is visible in the path segments — Twinn for flood, subsidence and coastal erosion, Terrafirma for ground. Every operation accepts X-Client-ID, X-Client-Reference and X-Correlation-ID tracking headers. The harvested schema document carries 35 component schemas covering the response models (FloodScoreResponseModelV2, SubsidenceScoreResponseModelV2, CoastalErosionScoreResponseModelV2, GroundScoreResponseModelV2, EnergyCertificateResponseModelV2 and their sub-models). The APIM contract records the backend as web-uks-prod-data-api.azurewebsites.net/v2.