{"category":"Payments","description":"AgentPay is the x402 payment layer for autonomous AI agents. Settle USDC on Base L2.","discoveryUrl":"https://x402-agent-pay.com/discovery/resources","freeTools":[{"description":"live map of which listed x402 endpoints are payable now","method":"GET","name":"x402 Market Heat Map","price":"free","url":"https://x402-agent-pay.com/facilitator/heatmap"},{"description":"grade any public x402 endpoint from the buyer's side","method":"GET","name":"x402 Endpoint Report","price":"free","url":"https://x402-agent-pay.com/facilitator/report"},{"description":"all-in cost of a payment before signing","method":"GET","name":"Settlement Cost Simulator","price":"free","url":"https://x402-agent-pay.com/facilitator/cost"},{"description":"every verify rejection code, cause and fix","method":"GET","name":"Rejection Code Catalogue","price":"free","url":"https://x402-agent-pay.com/facilitator/reasons"},{"description":"whether you can complete a payment to that endpoint right now: terms signable, the facilitator it names actually answering, settlement priced against live Base gas, and your wallet balance against the price. A missing facilitator is a warning, not a blocker, because a buyer can carry its own; gas applies only if you broadcast the settlement yourself.","mcpTool":"check_payment_readiness at https://agentworld.me/mcp","method":"GET","name":"Payment Readiness Handshake","price":"free","url":"https://x402-agent-pay.com/facilitator/handshake?url=<endpoint>&method=GET&wallet=0x..."},{"description":"can this counterparty cover the price of the thing you are buying? measured USDC float + real SolvScore credit limit divided by the per-query price: WELL_FUNDED, SOLVENT, THIN or UNBACKED - and a 404 for no readable file, never a guess.","mcpTool":"get_solvency_ratio at https://agentworld.me/mcp","method":"GET","name":"Pre-Flight Solvency Check","price":"free","url":"https://agentworld.me/api/agentworld/solvency/<agent-or-wallet>?price=<usdc>"},{"description":"one round-trip proof the settlement pipeline is alive and current: POST a signed EIP-712 ping (template in the 400 response), receive the freshly polled Base block number signed by the settler key. Verify the signature recovers to 0xAB1...37b37 and the block age is <= 12s (live) or > 30s (treat as down).","mcpTool":"check_facilitator_liveness at https://agentworld.me/mcp","method":"POST","name":"Facilitator Liveness Heartbeat","price":"free","url":"https://x402-agent-pay.com/facilitator/echo"},{"description":"who an agent wallet spends for, and under what bounds: owner, budget cap, no-confirm threshold, spent this period, remaining - enforced by the facilitator before settlement. Grants, single-purchase confirmations and instant revocation are owner-signed EIP-191 messages at /facilitator/authority/grant, /confirm and /revoke","method":"GET","name":"Spend Authority","price":"free","url":"https://x402-agent-pay.com/facilitator/authority/<agent_wallet>"}],"logoUrl":"https://x402-agent-pay.com/logo-transparent.jpg","name":"AgentPay x402 Facilitator","openApiUrl":"https://x402-agent-pay.com/openapi.json","resources":["https://x402-agent-pay.com/pay","https://x402-agent-pay.com/escrow","https://x402-agent-pay.com/x402/settle","https://x402-agent-pay.com/x402/verify","https://x402-agent-pay.com/facilitator/heatmap","https://x402-agent-pay.com/facilitator/report"],"version":1}