Locate alternative-fuel stations across the US via NREL Alternative Fuels Data Center. Search by lat/lon + radius (miles), state, or zip. Filter by fuelType (BD=Biodiesel | CNG=Compressed Natural Gas | ELEC=Electric vehicle charging | E85=Ethanol | HY=Hydrogen | LNG=Liquefied Natural Gas | LPG=Propane | RD=Renewable Diesel), status (E=Available | P=Planned | T=Temporarily Unavailable), access (public/private), and EV network. For EV chargers, returns connector types (J1772, CHAdeMO, Tesla, etc.), Level 1/2/DC-fast counts, pricing, and access hours. Indispensable for trip-planning agents, fleet logistics, EV-adoption analysis.
/api/energy/fuel-stationsPAYMENT-SIGNATURE.The fuel stations API is a pay-per-call energy endpoint built for AI agents and autonomous software. Locate alternative-fuel stations across the US via NREL Alternative Fuels Data Center.
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 fuel stations data source for an agent tool-use loop, an MCP host, or a backend that needs energy data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
lat | number | min -90 · max 90 |
lon | number | min -180 · max 180 |
radius | number | min 0.1 · max 500 |
fuelType | string | |
state | string | min 2 chars · max 2 chars · match ^[A-Za-z]{2}$ |
zip | string | match ^\d{5}$ |
status | string | one of: all | E | P | T |
accessCode | string | one of: all | public | private |
network | string | min 1 chars · max 80 chars |
limit | integer | min 1 · max 200 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/energy/fuel-stations?lat=-90&lon=-180&radius=0.1&fuelType=example&state=xx&zip=12345&status=all&accessCode=all&network=example&limit=25' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/energy/fuel-stations?lat=-90&lon=-180&radius=0.1&fuelType=example&state=xx&zip=12345&status=all&accessCode=all&network=example&limit=25' \ -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/energy/fuel-stations?lat=-90&lon=-180&radius=0.1&fuelType=example&state=xx&zip=12345&status=all&accessCode=all&network=example&limit=25'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.energy.fuelStations({
"lat": -90,
"lon": -180,
"radius": 0.1,
"fuelType": "example",
"state": "xx",
"zip": "12345",
"status": "all",
"accessCode": "all",
"network": "example",
"limit": 25
})
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.energy.fuel_stations(lat=-90, lon=-180, radius=0.1, fuelType="example", state="xx", zip="12345", status="all", accessCode="all", network="example", limit=25)
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": "energy.fuel-stations",
"arguments": {
"lat": -90,
"lon": -180,
"radius": 0.1,
"fuelType": "example",
"state": "xx",
"zip": "12345",
"status": "all",
"accessCode": "all",
"network": "example",
"limit": 25
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object | |
meta | object |
{
"ok": true,
"items": [
{}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
},
"meta": {
"stationLocatorUrl": "example"
}
}