Architecture Adjacency

{
  "data": {
    "chargedAmount": "35008",
    "inputHash": "sha256:cbaab14680d9db202add7d89befebc941459edff8a7fe68e1bb81c494…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "spatial-adjacency-check",
    "result": {
      "checks": [
        {
          "from": "studio",
          "id": "r1",
          "relation": "adjacent",
          "status": "satisfied",
          "to": "court"
        }
      ],
      "contradictoryPairs": [],
      "dataClass": "synthetic",
      "limitations": [
        "Only declared undirected room topology; absence is unknown, not …"
      ],
      "serviceId": "spatial-adjacency-check"
    },
    "resultHash": "sha256:02c8054446fa3e70abda41cf5d5fdc48e0ca7eb08b8af70ee13389aa7…",
    "sourceContractAmount": "29500",
    "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/verify/architecture/adjacency' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","requirements":[{"from":"studio","id":"r1","relation":"adjacent","to":"court"}],"rooms":["studio","court"],"topology":[{"adjacent":true,"from":"studio","to":"court"}]}'

# 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/verify/architecture/adjacency' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","requirements":[{"from":"studio","id":"r1","relation":"adjacent","to":"court"}],"rooms":["studio","court"],"topology":[{"adjacent":true,"from":"studio","to":"court"}]}' \
  | 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 $0.035008 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.035008" });
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 $0.035008 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Farchitecture%2Fadjacency&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/architecture/adjacency", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "requirements": [
      {
        "from": "studio",
        "id": "r1",
        "relation": "adjacent",
        "to": "court"
      }
    ],
    "rooms": [
      "studio",
      "court"
    ],
    "topology": [
      {
        "adjacent": true,
        "from": "studio",
        "to": "court"
      }
    ]
  }),
});
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 $0.035008 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.035008"})
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/verify/architecture/adjacency",
        json={
            "dataClass": "synthetic",
            "requirements": [
                {
                    "from": "studio",
                    "id": "r1",
                    "relation": "adjacent",
                    "to": "court",
                },
            ],
            "rooms": [
                "studio",
                "court",
            ],
            "topology": [
                {
                    "adjacent": True,
                    "from": "studio",
                    "to": "court",
                },
            ],
        },
    )
    print(res.status_code, res.text)