ToolVet
78trust / 100

Services Oracle Price Feed

by api.craigmbrown.com in Markets & finance

x402 APIPassing, checked 50 min ago

Real-time price feed for a named pair and venue, with the source cited per read instead of a black-box number. Settlement proof: ProofOfSettledOutcome (kind 30120, data/proof_settled_outcomes.jsonl). The base data layer the other oracle.* SKUs (arbitrage, volatility, alert... | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base

POST
https://api.craigmbrown.com/v1/services/oracle.price-feed
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
367 ms
559 ms slowest 5%
Last check
Passed
50 min ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

POST https://api.craigmbrown.com/v1/services/oracle.price-feed

Each call costs $0.02 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://api.craigmbrown.com/v1/services/oracle.price-feed
content-type: application/json

{
  "prompt": "..."
}

Parameters

ParameterTypeRequiredDescription
promptstringYes

Example response

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

{
  "deliverable": {
    "findings": [],
    "summary": "..."
  },
  "status": "complete"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.craigmbrown.com/v1/services/oracle.price-feed' \
  -H 'content-type: application/json' \
  --data-raw '{"prompt":"..."}'

# 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://api.craigmbrown.com/v1/services/oracle.price-feed' \
  -H 'content-type: application/json' \
  --data-raw '{"prompt":"..."}' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.craigmbrown.com%2Fv1%2Fservices%2Foracle.price-feed&method=POST
const res = await pay("https://api.craigmbrown.com/v1/services/oracle.price-feed", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "prompt": "..."
  }),
});
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.craigmbrown.com/v1/services/oracle.price-feed",
        json={
            "prompt": "...",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
50 min agoPassed402415 ms$0.02
5 h agoPassed402357 ms$0.02
9 h agoPassed402364 ms$0.02
14 h agoPassed402379 ms$0.02
18 h agoPassed402462 ms$0.02
Show 10 older checks
22 h agoPassed402700 ms$0.02
26 h agoPassed402364 ms$0.02
30 h agoPassed402351 ms$0.02
34 h agoPassed402387 ms$0.02
38 h agoPassed402348 ms$0.02
41 h agoPassed402440 ms$0.02
45 h agoPassed402459 ms$0.02
2 days agoPassed402347 ms$0.02
2 days agoPassed402358 ms$0.02
2 days agoPassed402374 ms$0.02