Ephemeris Snapshots Export Semantic Parity

{
  "data": {
    "chargedAmount": "39329",
    "inputHash": "sha256:5588f55d943e8e801e64384ac9fdf3355f688f783ef85f8691a4e8cb2…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "ephemeris-snapshots-export-semantic-parity",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "ephemeris-snapshots-export-semantic-parity/1",
      "metrics": [
        {
          "key": "comparable-position-count",
          "recordId": "snapshot",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:3badbfb2832aa768dcb445294504bb32297ff53fe6a6965b5517560d1…",
    "version": "maha-typed-metadata-audit/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/ephemeris-snapshots/export-semantic-parity' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"epoch":"2026-01-01T00:00:00.000Z","frame":"ICRS","id":"body","unit":"km","vector":{"x":1,"y":0,"z":0}}],"before":[{"epoch":"2026-01-01T00:00:00.000Z","frame":"ICRS","id":"body","unit":"m","vector":{"x":1000,"y":0,"z":0}}],"dataClass":"synthetic","nonpersonalMetadata":true}'

# 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/ephemeris-snapshots/export-semantic-parity' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"epoch":"2026-01-01T00:00:00.000Z","frame":"ICRS","id":"body","unit":"km","vector":{"x":1,"y":0,"z":0}}],"before":[{"epoch":"2026-01-01T00:00:00.000Z","frame":"ICRS","id":"body","unit":"m","vector":{"x":1000,"y":0,"z":0}}],"dataClass":"synthetic","nonpersonalMetadata":true}' \
  | 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 $0.039329 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.039329" });
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 $0.039329 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcelestial%2Fephemeris-snapshots%2Fexport-semantic-parity&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/celestial/ephemeris-snapshots/export-semantic-parity", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "after": [
      {
        "epoch": "2026-01-01T00:00:00.000Z",
        "frame": "ICRS",
        "id": "body",
        "unit": "km",
        "vector": {
          "x": 1,
          "y": 0,
          "z": 0
        }
      }
    ],
    "before": [
      {
        "epoch": "2026-01-01T00:00:00.000Z",
        "frame": "ICRS",
        "id": "body",
        "unit": "m",
        "vector": {
          "x": 1000,
          "y": 0,
          "z": 0
        }
      }
    ],
    "dataClass": "synthetic",
    "nonpersonalMetadata": true
  }),
});
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 $0.039329 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.039329"})
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/ephemeris-snapshots/export-semantic-parity",
        json={
            "after": [
                {
                    "epoch": "2026-01-01T00:00:00.000Z",
                    "frame": "ICRS",
                    "id": "body",
                    "unit": "km",
                    "vector": {
                        "x": 1,
                        "y": 0,
                        "z": 0,
                    },
                },
            ],
            "before": [
                {
                    "epoch": "2026-01-01T00:00:00.000Z",
                    "frame": "ICRS",
                    "id": "body",
                    "unit": "m",
                    "vector": {
                        "x": 1000,
                        "y": 0,
                        "z": 0,
                    },
                },
            ],
            "dataClass": "synthetic",
            "nonpersonalMetadata": True,
        },
    )
    print(res.status_code, res.text)