Everything around a coordinate in one call: nearby airports (IATA/ICAO, type, distance), public K-12 schools (name, district, enrollment, distance), NOAA climate stations (for chaining into /api/climate/station-history), and earthquakes from the past week (magnitude, depth, time). Pass lat/lon plus optional radiusKm (default 25, max 200) and per-category limit (default 5). Each category returns an independent found/error block, so one slow source never empties the rest. Site assessment, relocation research, travel planning, and risk screening. Each category is also a standalone endpoint (/api/airport/near, /api/edu/school-lookup, /api/climate/station-near, /api/quakes/recent).
/api/geo/nearbyPAYMENT-SIGNATURE.The nearby API is a pay-per-call geo endpoint built for AI agents and autonomous software. Everything around a coordinate in one call: nearby airports (IATA/ICAO, type, distance), public K-12 schools (name, district, enrollment, distance), NOAA climate stations (for chaining into /api/climate/station-history), and earthquakes from the past week (magnitude, depth, time).
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in nearby data source for an agent tool-use loop, an MCP host, or a backend that needs geo data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
latrequired | number | min -90 · max 90 |
lonrequired | number | min -180 · max 180 |
radiusKm | number | min 1 · max 200 |
limit | integer | min 1 · max 20 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/geo/nearby?lat=-90&lon=-180&radiusKm=25&limit=5' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/geo/nearby?lat=-90&lon=-180&radiusKm=25&limit=5' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/geo/nearby?lat=-90&lon=-180&radiusKm=25&limit=5'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.geo.nearby({
"lat": -90,
"lon": -180,
"radiusKm": 25,
"limit": 5
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.geo.nearby(lat=-90, lon=-180, radiusKm=25, limit=5)
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "geo.nearby",
"arguments": {
"lat": -90,
"lon": -180,
"radiusKm": 25,
"limit": 5
}
}
}| Field | Type | Description |
|---|---|---|
lat | number | |
lon | number | |
radiusKm | number | |
airports | object | |
schools | object | |
climateStations | object | |
quakes | object | Earthquakes within radiusKm (min 50km search radius) from the past 7 days, magnitude ≥ 2. |
sources | array |
{
"lat": 1,
"lon": 1,
"radiusKm": 1,
"airports": {
"found": false,
"error": "example",
"count": 1,
"items": [
{}
]
},
"schools": {
"found": false,
"error": "example",
"count": 1,
"items": [
{}
]
},
"climateStations": {
"found": false,
"error": "example",
"count": 1,
"items": [
{}
]
},
"quakes": {
"found": false,
"error": "example",
"count": 1,
"items": [
{}
]
},
"sources": [
{
"provider": "example",
"url": "example",
"license": "example"
}
]
}