Smi Api History
by Space Markets Index (SMI) in Markets & finance
Space Markets Index (SMI), published by Space Markets, Inc.: orbital launch activity from public data. Weekly 2026 launch series, per-launch records (rocket, mission, payloads, mass status) and SMI prints, as small JSON. Each read costs $0.01 test USDC via x402 on Base Sepolia (testnet). Data: GCAT (J. McDowell, planet4589.org), CC BY 4.0, modified by Space Markets. Not affiliated with or endorsed by SpaceX. Data only, not advice. Free: https://smx.space/smi-api/latest
https://smx.space/smi-api/history- Price
- $0.01
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 320 ms
- 546 ms slowest 5%
- Last check
- Passed
- 11 min ago, next in 17 min
Reliability
How to call it
GET https://smx.space/smi-api/history
Each call costs $0.01 in USDC on Base Sepolia, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
GET https://smx.space/smi-api/historyExample response
The provider's example. We can't check it without paying.
Example response, 27 lines
{
"attribution": {
"dataset": "GCAT",
"license": "CC BY 4.0",
"notice": "Not affiliated with or endorsed by SpaceX. Data only, not advice."
},
"print_id": "2026-W39.r5",
"schema_version": "smx.api.smi.history.v1",
"totals": {
"launches_in_series": 233,
"weeks": 39,
"ytd_launches": 233
},
"weeks": [
{
"launches": 12,
"week": "2026-W38",
"week_start": "2026-09-14"
},
{
"launches": 2,
"week": "2026-W39",
"week_start": "2026-09-21"
}
],
"year": 2026
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://smx.space/smi-api/history'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://smx.space/smi-api/history' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsmx.space%2Fsmi-api%2Fhistory
const res = await pay("https://smx.space/smi-api/history");
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://smx.space/smi-api/history")
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 11 min ago | Passed | 402 | 284 ms | $0.01 |
| 4 h ago | Passed | 402 | 437 ms | $0.01 |
| 8 h ago | Passed | 402 | 293 ms | $0.01 |
| 13 h ago | Passed | 402 | 472 ms | $0.01 |
| 17 h ago | Passed | 402 | 295 ms | $0.01 |
Show 10 older checks
| 21 h ago | Passed | 402 | 302 ms | $0.01 |
| 26 h ago | Passed | 402 | 302 ms | $0.01 |
| 30 h ago | Passed | 402 | 314 ms | $0.01 |
| 34 h ago | Passed | 402 | 555 ms | $0.01 |
| 38 h ago | Passed | 402 | 414 ms | $0.01 |
| 41 h ago | Passed | 402 | 324 ms | $0.01 |
| 45 h ago | Passed | 402 | 439 ms | $0.01 |
| 2 days ago | Passed | 402 | 307 ms | $0.01 |
| 2 days ago | Passed | 402 | 326 ms | $0.01 |
| 2 days ago | Passed | 402 | 416 ms | $0.01 |