Hosted agent spend controls for autonomous wallets: approval-risk gate, per-call and per-counterparty limits, wallet risk score, transaction-pattern burst signals, risky spender approvals, and autopay spend policy from fresh D1 wallet snapshots plus live allowance reads. Price 0.25 USDC on Base via x402. Demo: https://wallet-portfolio-history-mcp.mtree.workers.dev/demo/tools/agent_spend_controls. Contact: https://wallet-portfolio-history-mcp.mtree.workers.dev/contact.