"Coinbase" matching MCP connectors:

Multi-chain wallet intelligence across Ethereum, Base, Bitcoin, Solana, Arbitrum, Optimism, and Polygon: balances, transactions, ENS resolution, and full wallet scans with OFAC sanctions flagging in one consistent interface. x402 USDC on Base & Solana via Coinbase CDP facilitator, $0.001-$0.03/call. No API keys.