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Mercator Inverse Projection (Web Mercator to Lat/Lon)
x402
Mercator Inverse Projection (Web Mercator to Lat/Lon) is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).
Converts Web Mercator (EPSG:3857) easting/northing coordinates in metres back to geographic latitude and longitude.
Price / call$0.001
Success—
StatusUnknown
How this service works
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
Output
Returns a JSON object with two fields: `lat` (latitude in decimal degrees, WGS84) and `lon` (longitude in decimal degrees, WGS84), representing the geographic location corresponding to the input Web Mercator easting and northing.
Example use cases
Decode map tile click coordinates
“I clicked on a point on a Leaflet map and got back easting x=2226389.82 and northing y=4865942.28 in Web Mercator — what are the actual latitude and longitude of that point?”
Convert GIS export to usable coords
“My GIS tool exported a point as x=556597.45, y=7361866.11 in EPSG:3857 metres — can you convert that to a standard latitude and longitude I can use in Google Maps?”
Reverse-project satellite imagery centroid
“I have a satellite image centroid in Web Mercator: easting 11131949.08 and northing 2273030.93 — please give me the lat/lon so I can look it up on a map.”
Technical details
Endpoint
POSThttps://x402-agent.kariguetoazul.workers.dev/api/geometry/mercator-inverse?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have Web Mercator (EPSG:3857) easting/northing values in metres and need to convert them to WGS84 latitude/longitude. Ideal for agents processing GIS exports, map click events, or any system that outputs projected coordinates in metres rather than geographic degrees. Prefer this over a full GIS library when you need a lightweight, on-demand, pay-per-call conversion without managing local projection dependencies.
Side effects
- Input x or y exceeds valid Web Mercator range (±20037508.34 metres) — server may return validation error
- Non-numeric or missing x/y fields cause a 400 bad request
- Payment not provided or insufficient USDC results in 402 Payment Required
- Network timeout on the Cloudflare Workers edge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| x | number | Easting in metres. |
| y | number | Northing in metres. |
Output
Schema · Response
{
"type": "json",
"example": {
"lat": 0,
"lon": 0
}
}Tags
x402
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