Marketplace · API · x402

rubric-protocol.com/v1/x402/check-counterparty

Attested pre-transaction counterparty check: OFAC SDN digital-currency list match plus on-chain profile for any Base address, returned as a signed, Hedera-anchored verdict you can cite as evidence of diligence.

Endpoint	`https://rubric-protocol.com/v1/x402/check-counterparty`
Trust	100% uptime over 1 checks · ~365 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xaB6731A0BcDf511c2842C768a03448075aB654ca
method	POST
last updated	2026-10-27T14:16:07.012Z

Use it

Call it (an x402 client pays automatically)

curl -i https://rubric-protocol.com/v1/x402/check-counterparty
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-c54b7144c7026c06

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}