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Compare MCP and x402, learn how agents discover and call paid tools, and add policy, budgets, approvals, and constrained signing for production use.

Learn why AI agent payment safety needs scoped policies, exact approvals, constrained signing, idempotent retries, and budgets—not spending caps alone.

Learn why production stablecoin payments need explicit order states, deterministic transfer matching, finality tracking, idempotency, and reliable webhooks.

Learn how to refund finalized stablecoin payments with verified addresses, exact amounts, signed transactions, idempotent webhooks, and on-chain reconciliation.

Learn how crypto deposit monitoring uses unique addresses, finality, idempotent webhooks, and reconciliation to credit customer deposits safely.

Build AI agent payments with buyer-side policies, budgets, approvals, and customer-controlled signing, plus seller-side payment orders, finality, webhooks, and reconciliation.

Learn crypto payment reconciliation across business orders, payment events, and on-chain transfers with a safe script and daily and monthly checklists.

An underpaid crypto payment, overpayment, wrong-network transfer, or late payment should never silently complete an order. Learn how to detect, resolve, and prevent each mismatch.

There is no single best chain for stablecoin payments. Compare payer-side fees, finality, and wallet distribution, then accept a set of chains and match each transfer to an order.

Use x402 for HTTP-native agent payments, but keep merchant-side order state, policy, finality, webhooks, and audit trails separate.