deliberately brokenMPP

MPP mismatched recipient

An MPP challenge on Base Sepolia paying an address the endpoint was not configured with.

Your client should Notice who it is about to pay.

Protocol: MPP
Network: Base Sepolia
Price: 0.0001 USDC
Scheme: exact
Facilitator: x402.org
Behavior: Mismatched payTo

The recipient is not the one configured. A client that checks who it is paying should notice.

Customize this test

Your endpointMismatched payTo

/api/mpp?quirk=wrong-payto

Try it

curl -i "https://test402.com/api/mpp?quirk=wrong-payto"

Returns 402 whose payTo differs from the configured recipient.

Response it will return (HTTP 402)

WWW-Authenticate: Payment id="<bound per request -- run the curl to see it>", realm="test402.com", method="evm", intent="charge", request="eyJhbW91bnQiOiIxMDAiLCJjdXJyZW5jeSI6IjB4MDM2Q2JENTM4NDJjNTQyNjYzNGU3OTI5NTQxZUMyMzE4ZjNkQ0Y3ZSIsIm1ldGhvZERldGFpbHMiOnsiY2hhaW5JZCI6ODQ1MzIsImNyZWRlbnRpYWxUeXBlcyI6WyJhdXRob3JpemF0aW9uIiwidHJhbnNhY3Rpb24iXSwiZGVjaW1hbHMiOjYsInBlcm1pdDJBZGRyZXNzIjoiMHgwMDAwMDAwMDAwMjJENDczMDMwRjExNmRERUU5RjZCNDNhQzc4QkEzIn0sInJlY2lwaWVudCI6IjB4MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwZEVhRCJ9", expires="2026-01-01T00:05:00Z"

{
  "type": "https://paymentauth.org/problems/payment-required",
  "title": "Payment Required",
  "status": 402,
  "detail": "test402 challenge",
  "note": "test402 scenario. quirk=wrong-payto"
}