Compute the current position of any cataloged Earth-orbiting satellite by NORAD catalog number (e.g. 25544 = ISS, 20580 = Hubble), using fresh Celestrak orbital elements propagated with SGP4. Returns sub-point latitude/longitude, altitude (km), and speed (km/s) for the requested instant (default: now; pass `at` as an ISO timestamp for any time within a few days of the elements' epoch). Supply observer `lat`/`lon` (and optional altKm) to also get look angles — azimuth, elevation, slant range, and whether the satellite is above your horizon — for visual/antenna pointing. Satellite tracking, pass prediction, ground-station planning. Public-domain orbital data; physical/mission metadata is not included.
/api/space/satellitePAYMENT-SIGNATURE.The satellite API is a pay-per-call space endpoint built for AI agents and autonomous software. Compute the current position of any cataloged Earth-orbiting satellite by NORAD catalog number (e.g.
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 satellite data source for an agent tool-use loop, an MCP host, or a backend that needs space data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
noradIdrequired | integer | min 1 · max 999999 |
lat | number | min -90 · max 90 |
lon | number | min -180 · max 180 |
altKm | number | min -0.5 · max 9 |
at | string | date-time |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/space/satellite?noradId=1&lat=-90&lon=-180&altKm=-0.5&at=example' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/space/satellite?noradId=1&lat=-90&lon=-180&altKm=-0.5&at=example' \ -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/space/satellite?noradId=1&lat=-90&lon=-180&altKm=-0.5&at=example'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.space.satellite({
"noradId": 1,
"lat": -90,
"lon": -180,
"altKm": -0.5,
"at": "example"
})
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.space.satellite(noradId=1, lat=-90, lon=-180, altKm=-0.5, at="example")
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": "space.satellite",
"arguments": {
"noradId": 1,
"lat": -90,
"lon": -180,
"altKm": -0.5,
"at": "example"
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"position": {
"noradId": 1,
"name": "example",
"internationalDesignator": "example",
"epoch": "example",
"at": "example",
"geodetic": {
"latitude": 1,
"longitude": 1,
"altitudeKm": 1
},
"velocityKmS": 1,
"look": {
"azimuthDeg": 1,
"elevationDeg": 1,
"rangeKm": 1,
"aboveHorizon": false
}
}
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}