Micro Evidence Budget Allocation

{
  "amountBaseUnits": "28000",
  "boundaries": [
    "Public or synthetic inputs only. Caller labels are declarations,…"
  ],
  "inputDigest": "sha256:1e8d60bc69630585b596475d1dc383216bc8de58d05f50d518e5046a8…",
  "offerId": "evidence-budget-allocation",
  "receiptDigest": "sha256:2e5afe3b4be0779943649b7e569ee4106c6f134d1bffb8dbebb49bc64…",
  "result": {
    "dataClass": "synthetic",
    "inputSha256": "sha256:1e8d60bc69630585b596475d1dc383216bc8de58d05f50d518e5046a8…",
    "limits": [
      "Public/synthetic is a caller declaration, not content inspection…"
    ],
    "omittedEvidenceIds": [
      "a"
    ],
    "optimalForDeclaredObjective": true,
    "resultSha256": "sha256:62e142db9a3904ca2ed57c529ecbf30d3265775f396250476bc69ad59…",
    "selectedEvidenceIds": [
      "b",
      "c"
    ],
    "sourcesVerified": false,
    "tieRule": "sorted-id-order-exclude-on-equal-value",
    "totalValue": 20,
    "unspentTokens": 0,
    "usedTokens": 10
  },
  "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/evidence-budget-allocation' \
  -H 'content-type: application/json' \
  --data-raw '{"budget":10,"dataClass":"synthetic","items":[{"evidenceId":"a","tokens":6,"value":12},{"evidenceId":"b","tokens":5,"value":10},{"evidenceId":"c","tokens":5,"value":10}]}'

# 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/evidence-budget-allocation' \
  -H 'content-type: application/json' \
  --data-raw '{"budget":10,"dataClass":"synthetic","items":[{"evidenceId":"a","tokens":6,"value":12},{"evidenceId":"b","tokens":5,"value":10},{"evidenceId":"c","tokens":5,"value":10}]}' \
  | 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 $0.028 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.028" });
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 $0.028 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fmicro%2Fevidence-budget-allocation&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/micro/evidence-budget-allocation", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "budget": 10,
    "dataClass": "synthetic",
    "items": [
      {
        "evidenceId": "a",
        "tokens": 6,
        "value": 12
      },
      {
        "evidenceId": "b",
        "tokens": 5,
        "value": 10
      },
      {
        "evidenceId": "c",
        "tokens": 5,
        "value": 10
      }
    ]
  }),
});
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 $0.028 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.028"})
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/evidence-budget-allocation",
        json={
            "budget": 10,
            "dataClass": "synthetic",
            "items": [
                {
                    "evidenceId": "a",
                    "tokens": 6,
                    "value": 12,
                },
                {
                    "evidenceId": "b",
                    "tokens": 5,
                    "value": 10,
                },
                {
                    "evidenceId": "c",
                    "tokens": 5,
                    "value": 10,
                },
            ],
        },
    )
    print(res.status_code, res.text)