Tool Context Provenance Edge Audit

{
  "data": {
    "chargedAmount": "45299",
    "inputHash": "sha256:a8bc790c994086230245901dcd82ac5b9d431b89d86b593e2bfb6782f…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "tool-context-provenance-edge-audit",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "tool-context-provenance-edge-audit/1",
      "metrics": [
        {
          "key": "bound-tool-output-edges",
          "recordId": "tool",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:4eedb41769a4182f2ab56b7e0f23b851d1caccd4ac4ae4bdbe844f151…",
    "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/context/tool-context/provenance-edge-audit' \
  -H 'content-type: application/json' \
  --data-raw '{"calls":[{"contractDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"c1","resultDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","runId":"run1"}],"dataClass":"synthetic","edges":[{"callId":"c1","contractDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"e1","outputId":"o1"}],"nonpersonalMetadata":true,"outputs":[{"contentDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"o1","runId":"run1"}]}'

# 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/context/tool-context/provenance-edge-audit' \
  -H 'content-type: application/json' \
  --data-raw '{"calls":[{"contractDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"c1","resultDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","runId":"run1"}],"dataClass":"synthetic","edges":[{"callId":"c1","contractDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"e1","outputId":"o1"}],"nonpersonalMetadata":true,"outputs":[{"contentDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","id":"o1","runId":"run1"}]}' \
  | 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 $0.045299 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.045299" });
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 $0.045299 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcontext%2Ftool-context%2Fprovenance-edge-audit&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/context/tool-context/provenance-edge-audit", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "calls": [
      {
        "contractDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "id": "c1",
        "resultDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "runId": "run1"
      }
    ],
    "dataClass": "synthetic",
    "edges": [
      {
        "callId": "c1",
        "contractDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "id": "e1",
        "outputId": "o1"
      }
    ],
    "nonpersonalMetadata": true,
    "outputs": [
      {
        "contentDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "id": "o1",
        "runId": "run1"
      }
    ]
  }),
});
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 $0.045299 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.045299"})
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/context/tool-context/provenance-edge-audit",
        json={
            "calls": [
                {
                    "contractDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "id": "c1",
                    "resultDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "runId": "run1",
                },
            ],
            "dataClass": "synthetic",
            "edges": [
                {
                    "callId": "c1",
                    "contractDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "id": "e1",
                    "outputId": "o1",
                },
            ],
            "nonpersonalMetadata": True,
            "outputs": [
                {
                    "contentDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "id": "o1",
                    "runId": "run1",
                },
            ],
        },
    )
    print(res.status_code, res.text)