Micro Terrain Profile Arithmetic

{
  "amountBaseUnits": "65000",
  "boundaries": [
    "Public or synthetic inputs only. Caller labels are declarations,…"
  ],
  "inputDigest": "sha256:c4c3125637c6bac37957b642229ab5804bce85584dd01c258e264d100…",
  "offerId": "terrain-profile-arithmetic",
  "receiptDigest": "sha256:fe6031d455d38c839b060a5f36c4df5a21ebd6baa7626c931eef93f6f…",
  "result": {
    "ascentMm": 1000,
    "dataClass": "synthetic",
    "descentMm": 0,
    "limitations": [
      "Caller-supplied sampled profile arithmetic only; millimetres and…"
    ],
    "netRiseMm": 1000,
    "sampledPathLengthMm": "10049.875621",
    "segments": [
      {
        "angleDeg": "5.710593",
        "from": "a",
        "gradePercent": "10.000000",
        "lengthMm": "10049.875621",
        "riseMm": 1000,
        "runMm": 10000,
        "to": "b"
      }
    ],
    "serviceId": "terrain-profile-arithmetic",
    "totalRunMm": 10000
  },
  "version": "maha-microproducts/0.1"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/micro/terrain-profile-arithmetic' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","samples":[{"distanceMm":0,"elevationMm":1000,"id":"a"},{"distanceMm":10000,"elevationMm":2000,"id":"b"}]}'

# 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/micro/terrain-profile-arithmetic' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","samples":[{"distanceMm":0,"elevationMm":1000,"id":"a"},{"distanceMm":10000,"elevationMm":2000,"id":"b"}]}' \
  | 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 $0.065 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.065" });
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 $0.065 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fmicro%2Fterrain-profile-arithmetic&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/micro/terrain-profile-arithmetic", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "samples": [
      {
        "distanceMm": 0,
        "elevationMm": 1000,
        "id": "a"
      },
      {
        "distanceMm": 10000,
        "elevationMm": 2000,
        "id": "b"
      }
    ]
  }),
});
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 $0.065 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.065"})
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/micro/terrain-profile-arithmetic",
        json={
            "dataClass": "synthetic",
            "samples": [
                {
                    "distanceMm": 0,
                    "elevationMm": 1000,
                    "id": "a",
                },
                {
                    "distanceMm": 10000,
                    "elevationMm": 2000,
                    "id": "b",
                },
            ],
        },
    )
    print(res.status_code, res.text)