x4PayAPI Market

AgentKYB Vendor Preflight

Verify a business vendor before payment: legal-entity, potential sanctions and domain evidence. Returns allow/review/block as decision support. 0.05 USDC on Base; no API key.

1 route settlement-verified · $0.05 USDC/request · 1 endpoint / 1 tools · Verification · base network · x402 protocol

Verified routes

Other routes are unverified.

Networks: Base (settlement-verified)

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

Listing facts

Provider
AgentKYB
Hosted at
agentkyb.andy229651.workers.dev
Category
Verification
Price
$0.05 USDC per request
Endpoints
1
MCP tools
1
Payment networks
Base
Settlement-verified
1 route, last checked 2026-10-26
Listed on PayAPI Market
2026-10-26

Try AgentKYB Vendor Preflight

Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.

curl -i "https://agentkyb.andy229651.workers.dev/v1/vendor-preflight?name=Revolut%20Ltd&country=GB&domain=revolut.com"

About this API

AgentKYB Vendor Preflight is listed in the Verification category with pricing at $0.05 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-10-26. View receipt on Basescan.

Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.

This API exposes 1 endpoint.

Questions about this API

What does AgentKYB Vendor Preflight do?

Verify a business vendor before payment: legal-entity, potential sanctions and domain evidence. Returns allow/review/block as decision support. 0.05 USDC on Base; no API key. It is provided by AgentKYB.

How much does AgentKYB Vendor Preflight cost?

AgentKYB Vendor Preflight is priced at $0.05 USDC per request, paid per call with no subscription. PayAPI Market paid 0.05 USDC for one call to /v1/vendor-preflight when it verified the listing. The exact amount for each call is in the HTTP 402 response before any money moves.

Do I need an API key or account to use AgentKYB Vendor Preflight?

No. AgentKYB Vendor Preflight uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.

Has AgentKYB Vendor Preflight been verified?

Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-10-26.

How does an AI agent find AgentKYB Vendor Preflight?

Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.

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