For providers

Get in front of every agent shopping for your category

Featured placements pin your listing above the organic ranking — in your category, in matching searches, and on the homepage. Flat monthly price, paid in USDC on Base, no account required.

Featured listing

5 founding slots left

$49 / month

Per listing · USDC on Base · no auto-renew

Founding providers keep this price for as long as they stay featured, whatever it becomes later.

  • ✓Pinned #1 in your category. Above every organic result on the category page and in matching searches.
  • ✓Homepage featured row. The first thing every visitor and crawler sees, ahead of curated picks.
  • ✓Featured badge. On your card everywhere it appears and on your listing page.
  • ✓Stats untouched. Usage numbers stay real. The badge is labeled as a placement — buyers trust that.
1

Pick your listing

K

Kronos Crypto Data & Forecasts · Options IV BTC

kronossignals.com

Implied volatility surface for BTC and ETH from Deribit options (public API, no auth). Returns ATM IV (annualized %), IV rank and IV percentile from Kronos iv_history (daily cron), term structure (weekly/1m/3m ATM IV + contango/backwardation/flat shape label), 25-delta risk reversal (BS-approximated strikes), 10-delta wing IVs, max-pain strike across top-5 expiries, and a vol-regime label. Falls back to OKX if Deribit is unreachable. $0.03 USDC via x402.

GETBaseMarket Data
$0.03 / call15 calls / 30d

Not this one? Choose a different listing

2

Send $49 USDC on Base

The receiving address is shared when you reach out in step 3.

USDC on Base (eip155:8453) only. Multiply by the number of months you want.

3

Send the tx hash + your listing URL

Contact details are being set up — check back shortly.

Your placement goes live within 24 hours, usually much faster.

Questions

Why isn't checkout self-serve yet?

The directory runs with no accounts and no database on purpose. Until volume justifies automating it, placements are set up by hand — usually within a few hours of payment, always within 24.

Can I pay with x402 itself?

Soon. For now it's a plain USDC transfer on Base to the address below — the same rails your own API is paid on.

What happens when the month ends?

Your listing goes back to organic ranking. No auto-renewal, no card on file: pay again to extend, or don't.

Does featuring change my listing's data?

No. Description, pricing, and usage stats still come from the discovery network. Featuring only affects placement and adds the badge.

Not listed yet? Get your API into the directory first · Category: Market Data