Evidence Frame Compatibility

{
  "data": {
    "chargedAmount": "10501",
    "inputHash": "sha256:f6a1dcb8b6015739ad7dcb0148763855fad0420be6325a3ff05cb0bfe…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "evidence-frame-compatibility",
    "result": {
      "arbitraryProseRead": false,
      "assertionsVerified": false,
      "pairs": [
        {
          "index": 0,
          "issues": [
            {
              "explanation": "A vendor brochure is not independent performance evidence.",
              "field": "evidenceType",
              "neededNext": "Independent measurements of the same system, version, conditions…",
              "ruleId": "E-VENDOR-NOT-INDEPENDENT"
            }
          ],
          "matchedRuleId": "E-VENDOR-NOT-INDEPENDENT",
          "pairId": "synthetic-vendor-performance",
          "state": "frame-transfer-not-justified"
        }
      ],
      "ruleSetDigest": "sha256:4ddb7fa3765025f360e265da0ce813b12218a72d171ad4d517b1c7ba1…",
      "ruleSetVersion": "maha-evidence-frame-compatibility/0.1",
      "sourcesInspected": false
    },
    "resultHash": "sha256:eb97c4c7dbfbc38d6037768796f1ffb9db03772a6ffa647c938e583d5…",
    "sourceContractAmount": "10500",
    "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/context/evidence/frame-compatibility' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","pairs":[{"claimAsOfDate":"2026-09-13","claimScope":"synthetic-model-v1-test-a","claimType":"independent-performance","evidencePublishedDate":"2026-09-01","evidenceScope":"synthetic-model-v1-test-a","evidenceType":"vendor-brochure","locator":"page-2","pairId":"synthetic-vendor-performance","sourceId":"synthetic-brochure","sourceRole":"vendor"}]}'

# 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/evidence/frame-compatibility' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","pairs":[{"claimAsOfDate":"2026-09-13","claimScope":"synthetic-model-v1-test-a","claimType":"independent-performance","evidencePublishedDate":"2026-09-01","evidenceScope":"synthetic-model-v1-test-a","evidenceType":"vendor-brochure","locator":"page-2","pairId":"synthetic-vendor-performance","sourceId":"synthetic-brochure","sourceRole":"vendor"}]}' \
  | 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 $0.010501 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.010501" });
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 $0.010501 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fcontext%2Fevidence%2Fframe-compatibility&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/context/evidence/frame-compatibility", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "pairs": [
      {
        "claimAsOfDate": "2026-09-13",
        "claimScope": "synthetic-model-v1-test-a",
        "claimType": "independent-performance",
        "evidencePublishedDate": "2026-09-01",
        "evidenceScope": "synthetic-model-v1-test-a",
        "evidenceType": "vendor-brochure",
        "locator": "page-2",
        "pairId": "synthetic-vendor-performance",
        "sourceId": "synthetic-brochure",
        "sourceRole": "vendor"
      }
    ]
  }),
});
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 $0.010501 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.010501"})
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/evidence/frame-compatibility",
        json={
            "dataClass": "synthetic",
            "pairs": [
                {
                    "claimAsOfDate": "2026-09-13",
                    "claimScope": "synthetic-model-v1-test-a",
                    "claimType": "independent-performance",
                    "evidencePublishedDate": "2026-09-01",
                    "evidenceScope": "synthetic-model-v1-test-a",
                    "evidenceType": "vendor-brochure",
                    "locator": "page-2",
                    "pairId": "synthetic-vendor-performance",
                    "sourceId": "synthetic-brochure",
                    "sourceRole": "vendor",
                },
            ],
        },
    )
    print(res.status_code, res.text)