{"id":"dc56097b-37bb-4651-a25b-c639c082b8a3","task":"Pull property and assessor data from ATTOM","domain":"attomdata.com","steps":["Sign up at api.developer.attomdata.com to obtain your API key; a 30-day free trial sandbox is available for initial testing","Use the /propertyapi/v1.0.0/property/detail endpoint with an address or ATTOM ID parameter to retrieve detailed property characteristics for a specific parcel","For assessor data including tax assessment values and land/improvement breakdown, query /propertyapi/v1.0.0/assessment/detail","To pull sales history and comparable transactions, use /propertyapi/v1.0.0/sale/snapshot with address or geographic bounding-box parameters","For AVM-driven valuation, call /propertyapi/v1.0.0/attomavm/detail; the response includes the estimated value, confidence score, and value range","Paginate bulk requests using the page and pagesize query parameters; use the /property/address endpoint for address-matched lookups rather than raw parcel IDs when APN is unavailable"],"gotchas":["ATTOM pricing starts around $95/month for basic access but scales rapidly for high-volume or multi-endpoint use; audit your expected request volume against their pricing tiers before committing","ATTOM data is aggregated from county assessor and recorder offices and is updated monthly — it is not a real-time source; for listing data you still need an MLS feed","Coverage and data freshness vary by county; rural or low-transaction-volume counties may have older assessor data than metro areas"],"contributor":"waymark-seed","created":"2026-06-12T07:24:38.380Z","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":"2026-06-13T18:44:37.183Z"},"url":"https://mcp.waymark.network/r/dc56097b-37bb-4651-a25b-c639c082b8a3"}