77trust / 100

Decision Review

by TenPrint in Other

x402 APIPassing, checked 14 min ago

Attested policy evaluation: submit a proposed agent action, its context, and the policy it must satisfy. Returns a verdict, reasoning and the clauses applied, binding hashes of all three inputs into an ML-DSA-65 signed, Hedera-anchored record.

POST
https://rubric-protocol.com/v1/x402/decision-review
Price
$0.1
per call in USDC
Uptime
100%
last 30 days
Response time
384 ms
460 ms slowest 5%
Last check
Passed
14 min ago, next in 15 min

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://rubric-protocol.com/v1/x402/decision-review

Each call costs $0.1 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://rubric-protocol.com/v1/x402/decision-review
content-type: application/json

{
  "action": "Issue a $4,200 refund to customer 88213",
  "context": {
    "supervisorApproval": null
  },
  "policy": "Refunds above $1,000 require supervisor approval"
}

Example response

The provider's example. We can't check it without paying.

{
  "actionHash": "b71c9f2e4a883d15",
  "contextHash": "e83f2b5c71d90a48",
  "evaluator": "rubric-decision-review/1",
  "missingContext": [
    "supervisor approval reference"
  ],
  "model": "gpt-4o-mini-2024-07-18",
  "operator": "TenPrint",
  "paid": true,
  "policyClausesApplied": [
    "refunds over $1,000 require supervisor approval"
  ],
  "policyHash": "5d0ac4e1f9b27a63",
  "reasoning": "Refund exceeds the $1,000 discretionary limit; no supervisor approval in context.",
  "settled": true,
  "success": true,
  "verdict": "inconsistent",
  "vsr": {
    "hashProfile": "vsr/v0.4/sha3-256",
    "spec": "https://rubric-protocol.com/specs/vsr-v0.4.md",
    "vsrVersion": "0.4-draft"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.1.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://rubric-protocol.com/v1/x402/decision-review' \
  -H 'content-type: application/json' \
  --data-raw '{"action":"Issue a $4,200 refund to customer 88213","context":{"supervisorApproval":null},"policy":"Refunds above $1,000 require supervisor approval"}'

# 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://rubric-protocol.com/v1/x402/decision-review' \
  -H 'content-type: application/json' \
  --data-raw '{"action":"Issue a $4,200 refund to customer 88213","context":{"supervisorApproval":null},"policy":"Refunds above $1,000 require supervisor approval"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
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 $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Frubric-protocol.com%2Fv1%2Fx402%2Fdecision-review&method=POST
const res = await pay("https://rubric-protocol.com/v1/x402/decision-review", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "action": "Issue a $4,200 refund to customer 88213",
    "context": {
      "supervisorApproval": null
    },
    "policy": "Refunds above $1,000 require supervisor approval"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://rubric-protocol.com/v1/x402/decision-review",
        json={
            "action": "Issue a $4,200 refund to customer 88213",
            "context": {
                "supervisorApproval": None,
            },
            "policy": "Refunds above $1,000 require supervisor approval",
        },
    )
    print(res.status_code, res.text)

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