MCP server for a live x402 payment gateway on Base (USDC). Lets AI agents discover, preview for free, then pay per call — with prepaid gasless payments, signed receipts, and delta delivery.
Enables AI agents to autonomously quote, execute, and verify USDG payments on Robinhood Chain 4663 under configurable spending caps, while accessing PONS price, token, balance, and launch-market intelligence through MCP tools.
A wallet for AI agents with spending limits: pays x402 and MPP APIs in USDC (Base, Solana, Algorand) and RLUSD (XRP Ledger), checks every payment with presign-guard first, and asks for approval on your phone above your limits. Source in the wallet-mcp folder; npm: presign-guard-wallet-mcp.