Pay per call. No signup, no API key.

Price per call

The prices below apply to existing API checks and require a separate payment authorization for each paid call. These API checks do not require a subscription.

Paid API checks return a JSON report immediately after payment. A report can be delivered as INCOMPLETE when an evidence provider cannot complete every check; you can then request a refund within 7 days under the terms. Always review the x402 challenge before authorizing payment.

Prepaid credits: for agents that check often

Pay per call with x402 when you are trying KushBitx or use it now and then. For steady use, top up a credit balance once and spend it call by call.

1 credit = 0.001 USDC. A check never costs more in credits than its direct x402 price; we round down:

If a KushBitx Preflight answer is REVIEW only because one of our checks or data providers failed ("technicalReview": true), the credits are returned automatically.

Business pack: 99 USDC

• 120,000 credits (about 21% more than paying per call): for example 24,000 KushBitx Preflight checks, or 120,000 Token Risk checks.
• 30 days of integration support: we help you connect KushBitx to your system, by email, with a reply within one business day.
• One payment, no automatic renewal. Buy another pack when you need one.
• Not limited by the 50 USDC first-month top-up cap.

To buy: POST /api/credits/topup with {"plan":"business"}, then pay the x402 request (99 USDC on Base). Terms: /terms.

Why credits suit continuous use

• Faster calls. A per-call x402 payment adds a payment step before every check: the server first answers with a payment request, your client signs, and the payment settles on Base before the report is sent. We estimate that step at about 2.6 seconds: the sum of two medians from two samples, the median settlement time of 15 real payments (2.06 seconds) and the median payment-request round trip (0.56 seconds, median of 10 requests from our machine), in November 2026. A credit call skips it: the check runs as soon as the request arrives. Your own figure depends on your location and network.
• About 9% lower cost per check with a top-up of 10 USDC or more. Every top-up of 10 USDC or more gets the same 10% bonus: 10 USDC buys 11,000 credits, so each check costs about 9% less than paying per call. (Payment Proof is 2 credits instead of 2.88, so its saving is larger.)
• One signature per top-up. Your wallet signs once for the top-up, not once per request.
• No sign-up. The wallet that pays for the top-up is the account. There is no form, email or password.

How it works

1. Top up with one x402 payment of USDC on Base, sent from your wallet to KushBitx (POST /api/credits/topup with {"amountUsdc": 10}).
2. You receive a credit key once. Send it in the X-KushBitx-Credit-Key header with each request.
3. Each check deducts its credits. When the balance is too low, the request is refused with a clear error, never charged twice. Send an idempotency key (Idempotency-Key header) so a retried request is never deducted twice.

You can rotate or revoke the key. Each key has a daily spending limit of 2 USDC of credits, which the paying wallet can change. You can ask for a refund of what you paid minus the credits you used, to the wallet that paid (see the terms).

Platforms and teams

Platforms and teams: contact admin@kushbitx.com.