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Check a .si name Sales database Appraisal Blog Pricing Names for sale List your domain How it works API About

Pricing

The tools on this site are free for people checking names. The API is free at a volume that suits a person, and paid when you build a product on it — because registry checks and a maintained sales index cost real money to run.

Free

$0 · no key

10 requests / hour per IP with no key at all. The site's own pages and the staged scan are not part of that quota — this limit exists so the API stays a tool for people rather than a free data feed for products.

Enough to test an integration or script a weekly check; a paid key is what a product runs on.

Starter

$12 one-time · email key

1,000 requests / day with a key, plus the full sales index in one call (/api/sales.php?limit=500).

For a side project or a client site.

Pro

$29 one-time · email key

5,000 requests / day, a daily CSV of the sales index, and priority on new endpoints (for-sale watch, alerts).

For products that resell this data.

How to pay

PayPal

paypal.me/amousab

Card or PayPal balance — the fastest route. Put the email address you want the key sent to in the payment note.

Open PayPal →

USDC · BNB Smart Chain (BEP20)

0xA2fca9Bc3e0BB3d858Ea1dAFf654D929a6D80b7D

BEP20 only. BNB Smart Chain's token standard is BEP-20, and this is the deposit address Rizon shows for USDC on BNB Smart Chain. Send USDC on any other network and the funds are lost forever — check the network before you confirm.

Then email the transaction hash (or the PayPal receipt) plus the address for your key to [email protected]. Keys are issued by hand while automated checkout is being finished — usually the same day.

Using a Rizon, Revolut or any Visa card? Pay through the PayPal link: a card account is for spending, not for receiving, so it stays out of the payment flow. Rizon is where the proceeds can land and be spent.

What you get, and what we will not do

Included

  • The same registry-accurate availability the site uses (RDAP) with DNS as a second witness.
  • The tracked .si sales index with venue, date and a verified/reported label.
  • The appraisal engine, including every modifier it applied — no black box.
  • Rate-limit headers on every response: X-RateLimit-Limit, Remaining, Reset.

Not done here

  • No accounts, no passwords. The key is the credential, and only its hash is stored on our side.
  • No automatic charges. One-time payments only; nothing renews behind your back.
  • No freshness games. Results are cached for 10 minutes — hammering the endpoints will not make them newer.
  • No resale of the raw data as a dataset without asking first: write to us for a data agreement.
Ready to start? Write to [email protected] with the plan you want, pay by either method above, and the key comes back by email. If you only need a few hundred checks a month, stay on the free tier — that is what it is for.

Endpoint reference: the API page · live sample call · how the numbers are built