Empty-wallet test on 4,256 x402 routes: 38 sellers blame a facilitator outage

A developer sent zero-balance payments to 4,256 x402 routes from Coinbase's CDP Bazaar. 38 origins returned 502/503 "facilitator unavailable" for a rejected payment that was simply unfunded, 41 returned HTTP 500, and 3 served paid results without payment.

• 4,256 routes from 1,735 origins probed; 2,262 correctly rejected the payment for balance
• 38 origins report a facilitator outage instead of a balance error, triggering agent retries
• 41 origins returned HTTP 500, 20 listings 404'd, 3 served results without payment
• Some failures stem from descriptions over ~500 characters rejected by the CDP facilitator