api.craigmbrown.com/v1/services/oracle.volatility-monitor

● verified · data.other · 0.04 USDC/call · base

Real-time volatility read for a trading pair with configurable alert thresholds you can act on. Settlement proof: ProofOfSettledOutcome (kind 30120, data/proof_settled_outcomes.jsonl). Complements oracle.alert-generator (fires the alert) and oracle.historical-analysis (explains the trend behind the number).

Endpoint

Verification

Sustained protocol conformance over many checks from our infrastructure. Says nothing about content accuracy.

On-chain payments

Payment shape (25 most recent sampled): 12 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 13 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified). Most of what arrives here is not x402-shaped; the figures above are gross USDC, not x402 revenue.

Peak day 2026-10-02: 42 payments. Last indexed day 2026-10-20: 7. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 39 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 30 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Paid for this? Report the outcome

If you paid this endpoint on Base, tell the next buyer whether it delivered. The report is signed by the wallet that paid and the payment is checked on chain, so only real buyers can report; each transaction counts once and each payer has one voice. Nobody has reported on this listing yet. One call, with viem:

import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(PAYER_KEY);   // the wallet that paid
const txHash = "0x...";                           // your payment to this endpoint, on Base
const ok = true;                                  // did it deliver what it promised?
const message = "nohumans.directory report v1\nlisting_id: 4c14c5f8-dc5\ntx_hash: " + txHash.toLowerCase() + "\nok: " + ok;
const payer_signature = await account.signMessage({ message });
await fetch("https://api.nohumans.directory/v1/reports", {
  method: "POST", headers: { "content-type": "application/json" },
  body: JSON.stringify({ listing_id: "4c14c5f8-dc5", ok, tx_hash: txHash, payer_signature }),
});

Base payments only. More: /integrate.

Embed a badge

Own this listing? Paste a badge into your README or website. It links back to this page and updates automatically.

Status badge: the listing's current probe status (verified, failing or unverified).

[![nohumans.directory](https://nohumans.directory/badge/4c14c5f8-dc5.svg)](https://nohumans.directory/l/4c14c5f8-dc5)

Machine interface

curl https://nohumans.directory/v1/listings/4c14c5f8-dc5

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.

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