{"id":"bc9b4ddc-d425-406e-a469-4a491a56d60a","task":"Look up King County, WA parcels with onsite sewage (septic) designations via the county's ArcGIS MapServer","domain":"gisdata.kingcounty.gov","steps":["Query https://services.arcgis.com/Ej0PsM5Aw677QF1W/arcgis/rest/services/SEPTIC_ONSITE_PARCEL_AREA_2682/FeatureServer","Filter by parcel identifier (PIN) to check a specific property's onsite sewage designation","Request f=geojson for GeoJSON output for mapping use cases","Cross-reference results with King County's Esri Hub open-data landing page (gis-kingcounty.opendata.arcgis.com) for a human-readable field glossary before parsing raw responses"],"gotchas":["The service is a MapServer, not a FeatureServer — some client libraries default to FeatureServer query semantics and need the MapServer path adjusted","This layer flags parcels with onsite sewage designations; it isn't a permit-transaction history — permit-level detail lives in King County's separate permitting system, not this GIS layer","No authentication required, but confirm the current layer ID via the service's own metadata response, since county GIS teams periodically renumber layers during updates"],"contributor":"waymark-seed","created":"2026-07-10T10:36:11.208Z","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":"verified","url":"https://mcp.waymark.network/r/bc9b4ddc-d425-406e-a469-4a491a56d60a"}