Search the catalog of every cataloged Earth-orbiting object — ~69,000 satellites, rocket bodies, and debris tracked by US Space Force / 18 SDS (via CelesTrak SATCAT). Filter by name (q, e.g. "starlink"), owner/launching country (owner — code like US/PRC/CIS or a name like "china"), object type (type = payload | rocket body | debris | unknown), launch-year range (launchYearFrom/launchYearTo), international/COSPAR designator prefix (intlDesignator, e.g. "2024-"), on-orbit vs decayed (onOrbit), or exact NORAD number (noradId). Each result carries the NORAD id, name, international designator, object type, owner + resolved country, launch date + site, decay date (null = still in orbit), and orbital parameters (period, inclination, apogee, perigee). The envelope total is the full count matching your filter — so onOrbit=true&type=payload answers "how many active satellites are up there", and owner=PRC tells you who launched them. For a satellite's live sub-point position, pass its noradId to /api/space/satellite.
/api/space/satellitesPAYMENT-SIGNATURE.The satellites API is a pay-per-call space endpoint built for AI agents and autonomous software. Search the catalog of every cataloged Earth-orbiting object — ~69,000 satellites, rocket bodies, and debris tracked by US Space Force / 18 SDS (via CelesTrak SATCAT).
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 satellites 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 |
|---|---|---|
q | string | min 1 chars · max 120 chars |
owner | string | min 1 chars · max 40 chars |
type | string | min 1 chars · max 20 chars |
noradId | integer | min 1 · max 999999 |
intlDesignator | string | min 1 chars · max 20 chars |
launchYearFrom | integer | min 1957 · max 2100 |
launchYearTo | integer | min 1957 · max 2100 |
onOrbit | string | one of: true | false |
limit | integer | min 1 · max 100 |
offset | integer | min 0 · max 100000 |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/space/satellites?q=example&owner=example&type=example&noradId=1&intlDesignator=example&launchYearFrom=1957&launchYearTo=1957&onOrbit=true&limit=25&offset=0' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/space/satellites?q=example&owner=example&type=example&noradId=1&intlDesignator=example&launchYearFrom=1957&launchYearTo=1957&onOrbit=true&limit=25&offset=0' \ -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/satellites?q=example&owner=example&type=example&noradId=1&intlDesignator=example&launchYearFrom=1957&launchYearTo=1957&onOrbit=true&limit=25&offset=0'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.space.satellites({
"q": "example",
"owner": "example",
"type": "example",
"noradId": 1,
"intlDesignator": "example",
"launchYearFrom": 1957,
"launchYearTo": 1957,
"onOrbit": "true",
"limit": 25,
"offset": 0
})
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.satellites(q="example", owner="example", type="example", noradId=1, intlDesignator="example", launchYearFrom=1957, launchYearTo=1957, onOrbit="true", limit=25, offset=0)
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.satellites",
"arguments": {
"q": "example",
"owner": "example",
"type": "example",
"noradId": 1,
"intlDesignator": "example",
"launchYearFrom": 1957,
"launchYearTo": 1957,
"onOrbit": "true",
"limit": 25,
"offset": 0
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"noradId": 1,
"name": "example",
"intlDesignator": "example",
"objectType": "example",
"opsStatus": "example",
"owner": "example",
"ownerName": "example",
"launchDate": "example",
"launchSite": "example",
"decayDate": "example",
"onOrbit": false,
"orbit": {
"periodMin": 1,
"inclinationDeg": 1,
"apogeeKm": 1,
"perigeeKm": 1,
"orbitType": "example"
},
"rcsM2": 1
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}