{"resource":"https://goodsong.dev/verify/seller","service":"realx402-seller","areas":["other"],"answering":true,"http_status":402,"latency_ms":266,"price_usdc":0.005,"buyers_30d":1,"calls_30d":1,"description":"Verify an x402 seller before paying it: does it exist and respond with a well-formed 402 challenge, is its own declared input/output schema internally consistent, and is its payout address sanctioned? Checked live against the seller itself ","id":"61563e432198","category":"Payments and on-ramps","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/61563e432198"}