Let an AI agent buy gift cards with USDC over x402, within limits the wallet owner sets.
Streamable HTTP
https://x402.spendthebits.com/mcpclaude mcp add --transport http stb-giftcards https://x402.spendthebits.com/mcp@spendthebits/mcp-giftcards · npm 0.1.2 · stdio
claude mcp add --transport stdio stb-giftcards -- npx -y @spendthebits/mcp-giftcards@0.1.2