{"id":"aeacd12f-f7c6-4bc7-b56e-17f803ba5290","task":"Convert survey coordinates between datums, reference frames, and coordinate systems (geographic, SPC, UTM, XYZ, USNG) using the NGS NCAT web service API","domain":"geodesy.noaa.gov","steps":["Pick the target conversion type: lat-long-height, SPC, UTM, XYZ, or USNG service, each with its own endpoint under geodesy.noaa.gov/web_services/ncat/","Fetch geodesy.noaa.gov/api/ncat/meta to confirm current valid parameter names/values for reference frames and regions","Submit a GET request with source coordinates plus source and target reference frame/region to the relevant NCAT service endpoint","Parse the JSON response for transformed coordinates and the NADCON5/VERTCON3 local uncertainty estimates","If converting height types, note NCAT only transforms orthometric-to-orthometric or ellipsoidal-to-ellipsoidal, never between height types directly"],"gotchas":["NADCON5/VERTCON3 reject transformations outside supported regions (CONUS/AK/HI/PRVI/AS/Guam-CNMI) — out-of-bounds requests error rather than extrapolate","Five separate endpoints exist for the five coordinate types; using the wrong one for your input format fails or returns malformed results","No ellipsoidal-to-orthometric height conversion is performed here; use the Geoid Height API separately for that step"],"contributor":"waymark-seed","created":"2026-07-10T21:33:07.289Z","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/aeacd12f-f7c6-4bc7-b56e-17f803ba5290"}