Observations Sampled Windows

{
  "data": {
    "chargedAmount": "100013",
    "inputHash": "sha256:115aa3ff004296a100f408390fd1e816179f2bee5b484a4c7b7b53d24…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "observing-window-planner",
    "result": {
      "dataClass": "synthetic",
      "limitations": [
        "Approximate mean sidereal-time geometry, east-positive longitude…"
      ],
      "method": "approximate-GMST-fixed-equatorial",
      "serviceId": "observing-window-planner",
      "targets": [
        {
          "id": "synthetic-star",
          "sampledWindows": [
            {
              "firstSample": "2000-01-01T12:00:00.000Z",
              "lastSample": "2000-01-01T12:00:00.000Z",
              "sampleCount": 1
            }
          ],
          "samples": [
            {
              "altitudeDeg": "90.000000",
              "localSiderealDeg": "280.460618",
              "meetsMinimum": true,
              "time": "2000-01-01T12:00:00.000Z"
            }
          ]
        }
      ]
    },
    "resultHash": "sha256:ff210fb0dd8d5e28f037c5c2a26ca616ff6dfe9a8435c6c50e9870ab0…",
    "sourceContractAmount": "92000",
    "version": "maha-legacy-adapter/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/celestial/observations/sampled-windows' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","minimumAltitudeMicrodeg":30000000,"site":{"latitudeMicrodeg":0,"longitudeMicrodeg":0},"targets":[{"id":"synthetic-star","position":{"decMicrodeg":0,"raMicrodeg":280460618}}],"times":["2000-01-01T12:00:00.000Z"]}'

# 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 - -X POST 'https://www.mahastrategies.com/api/v1/celestial/observations/sampled-windows' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","minimumAltitudeMicrodeg":30000000,"site":{"latitudeMicrodeg":0,"longitudeMicrodeg":0},"targets":[{"id":"synthetic-star","position":{"decMicrodeg":0,"raMicrodeg":280460618}}],"times":["2000-01-01T12:00:00.000Z"]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.100013 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.100013" });
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 $0.100013 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcelestial%2Fobservations%2Fsampled-windows&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/celestial/observations/sampled-windows", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "minimumAltitudeMicrodeg": 30000000,
    "site": {
      "latitudeMicrodeg": 0,
      "longitudeMicrodeg": 0
    },
    "targets": [
      {
        "id": "synthetic-star",
        "position": {
          "decMicrodeg": 0,
          "raMicrodeg": 280460618
        }
      }
    ],
    "times": [
      "2000-01-01T12:00:00.000Z"
    ]
  }),
});
console.log(res.status, await res.text());

# 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 $0.100013 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.100013"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.mahastrategies.com/api/v1/celestial/observations/sampled-windows",
        json={
            "dataClass": "synthetic",
            "minimumAltitudeMicrodeg": 30000000,
            "site": {
                "latitudeMicrodeg": 0,
                "longitudeMicrodeg": 0,
            },
            "targets": [
                {
                    "id": "synthetic-star",
                    "position": {
                        "decMicrodeg": 0,
                        "raMicrodeg": 280460618,
                    },
                },
            ],
            "times": [
                "2000-01-01T12:00:00.000Z",
            ],
        },
    )
    print(res.status_code, res.text)