Encode coordinates as an Open Location Code (plus code) at a chosen length, or d
Encode coordinates as an Open Location Code (plus code) at a chosen length, or decode a full code back to its bounding box and centre. Also shortens a full code against a reference coordinate and recovers a shortened code given a reference, which is how plus codes are normally exchanged in text. Returns code length, precision in metres and validity.
Answeringour last check, 2026-09-29
1 of 1checks answered this week
434 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.duoleads.com/v1/geo/pluscode
| Category | Code and developer |
|---|---|
| Provider host | api.duoleads.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-29 | valid payment request | 402 | $0.05 | 434 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lat": "52.3728",
"lon": "4.8936"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"code": {
"description": "Plus code for decode, shorten or recover.",
"maxLength": 20,
"type": "string"
},
"lat": {
"description": "Latitude for op=encode.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
},
"length": {
"default": "10",
"description": "Code length for op=encode: 2,4,6,8,10 (default),11,12,13,14,15.",
"enum": [
"2",
"4",
"6",
"8",
"10",
"11",
"12",
"13",
"14",
"15"
],
"maxLength": 64,
"type": "string"
},
"lon": {
"description": "Longitude for op=encode.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
},
"op": {
"default": "encode",
"description": "encode (default), decode, shorten or recover.",
"enum": [
"encode",
"decode",
"shorten",
"recover"
],
"maxLength": 64,
"type": "string"
},
"ref_lat": {
"description": "Reference latitude for op=shorten/recover.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
},
"ref_lon": {
"description": "Reference longitude for op=shorten/recover.",
"maxLength": 64,
"pattern": "^[+-]?(\\d+(\\.\\d*)?|\\.\\d+)([eE][+-]?\\d+)?$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true,
"type": "boolean"
},
"route": {
"type": "string"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}