Ground resolution & scale

Endpoints (15 live)

• POST /v1/point-in-polygon — Test whether a coordinate falls inside a polygon. (0.002 USDC on Base)
• POST /v1/timezone — Resolve the timezone for a latitude/longitude. (0.002 USDC on Base)
• POST /v1/tile-bounds — Compute the geographic bounding box (west/south/east/north in degrees) of a slippy-map tile z/x/y, plus its Bing quadkey. (0.002 USDC on Base)
• POST /v1/to-dms — Convert a decimal-degree latitude/longitude to degrees-minutes-seconds, with hemisphere letters and a formatted string for each axis. (0.002 USDC on Base)
• POST /v1/forward — Project WGS84 longitude/latitude (degrees) to Web Mercator (EPSG:3857) easting/northing in metres. Latitude is clamped to ±85.0511° (the projection's valid extent). (0.002 USDC on Base)
• POST /v1/from-mgrs — Convert an MGRS grid reference back to decimal lat/lon on WGS84 (the coordinate of the grid cell's south-west corner at the given precision). Whitespace is ignored; a malformed reference is a clean 400. (0.002 USDC on Base)
• POST /v1/from-utm — Convert a UTM coordinate (zone, hemisphere, easting, northing) back to decimal lat/lon on WGS84. (0.002 USDC on Base)
• POST /v1/mgrs — Convert decimal lat/lon to a Military Grid Reference System (MGRS) string on WGS84. Precision is the number of digits per axis (1–5; 5 = 1-metre resolution, default 5). (0.002 USDC on Base)
• POST /v1/tile — Map a WGS84 coordinate at a given zoom (0..30) to its slippy-map (XYZ / Google / OSM) tile x,y and its Bing quadkey. (0.002 USDC on Base)
• POST /v1/inverse — Un-project Web Mercator (EPSG:3857) easting/northing in metres back to WGS84 longitude/latitude in degrees. (0.002 USDC on Base)
• POST /v1/utm — Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for latitudes -80..84. (0.002 USDC on Base)
• POST /v1/parse — Parse a coordinate string into decimal lat/lon. Accepts a plain decimal pair ('40.4462, -79.9822') or DMS with hemisphere letters ('40°26'46"N 79°58'56"W'). Anything unrecognized is a clean 400. (0.002 USDC on Base)
• POST /v1/resolution — Report the ground resolution (metres per pixel, for 256-px tiles) and the OGC map scale denominator at a zoom level, optionally adjusted for latitude (default equator). (0.002 USDC on Base)
• POST /v1/geohash — Encode a coordinate to a geohash and return its bounding box and 8 neighbors. (0.002 USDC on Base)
• POST /v1/distance — Distance and initial bearing between two coordinates. (0.002 USDC on Base)