Safe payments between AI agents and the APIs they buy from.
vet402 buys from x402 APIs, the ones that ask an agent to pay before they answer, and records whether a real answer came back. Your agent can check a seller and cap its spending before it pays. Your API can check the wallet that pays it.
Start free with 1,000 seller checks a month.
Pro is $49 a month. Scale is $199 a month.
- Days running
- 89
- since 2026-08-14
- Settled purchases
- 14,581
- Delivered
- 13,324
- Settled, not delivered
- 1,257
Read from the state API at . Delivered means a non-empty 2xx. A 4xx is inconclusive, because it can come from the shape of vet402's own request. CC BY 4.0.
- Seller
- dvmkit--discover.
dvmkit. ai - Paid
- 0.01 USDC on Base
- Transaction
- 0x3f85…0e5d
- Delivered
- Yes · HTTP 200
- This seller
- 1 of 1 paid calls in the last 30 days delivered.
A real row from the public export, not a sample. A seller check needs no key.
What vet402 helps you do
Pricing
Usage-based. The free tier is enough to wire a check into an x402 flow and see real results before committing to anything.
- Free$0
1,000 lookups / month
REST, MCP and x402 middleware, TypeScript SDK
- Pro$49/mo
50,000 lookups / month
Everything in Free, higher monthly lookup quota
- Scale$199/mo
500,000 lookups / month
Everything in Pro, highest monthly lookup quota
Paid tiers are upgraded from Billing once a key exists. No card is required to start. Already have a key? Open Billing.