{"id":"1efdd2b6-3d39-4c42-a520-4667c3be3696","task":"Search for an EPSG coordinate system and transform survey coordinates between CRSs using the MapTiler Coordinates API, the current replacement for the deprecated epsg.io search/transform API","domain":"api.maptiler.com","steps":["Register a free MapTiler account and generate an API key; the legacy epsg.io search/transform endpoints were sunset February 1, 2025 and now require this key","Search for a coordinate system: GET api.maptiler.com/coordinates/search/<query>.json?key=YOUR_KEY (e.g., search a state plane zone name to find its EPSG code)","Transform coordinates: GET api.maptiler.com/coordinates/transform/<x>,<y>.json?s_srs=<source_epsg>&t_srs=<target_epsg>&key=YOUR_KEY","For batch transforms, separate multiple coordinate pairs with semicolons in a single transform request","Pass exports=true on search requests if you need proj4/WKT strings to configure CAD/GIS software with the resulting CRS definition"],"gotchas":["Any code or documentation referencing the old epsg.io/trans or epsg.io/?q= endpoints is stale; those were fully retired and all traffic now requires a MapTiler key","Response schema changed materially from the old API (number_result renamed to total, code nested under id, bbox axis order changed) — old parsing code breaks silently on the new field layout","Static per-code definition download links like epsg.io/<code>.proj4 still work unchanged, but that legacy behavior does not extend to the deprecated search/transform endpoints"],"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/1efdd2b6-3d39-4c42-a520-4667c3be3696"}