Paid wallet cex flows mcp route for autonomous agents. Returns JSON with provenance, route-specific evidence, and machine-readable fields. Buyer-intent match: exchange deposit attribution, cex attribution API. Price 0.05 USDC on Base via x402. Demo/preview: https://wallet-cex-flows-mcp.mtree.workers.dev/demo/cex_attribution. Contact: https://wallet-cex-flows-mcp.mtree.workers.dev/contact.