Agent Card — Payment Skill#

Give your AI agent a virtual MasterCard. Agent Card lets agents autonomously create, fund, and manage virtual MasterCard cards by paying in USDC on the Stellar blockchain.

What It Does#

• Create cards — Issue virtual MasterCards with per-card spend limits
• Fund cards — Top up existing cards with USDC
• Manage cards — List, freeze, unfreeze, and inspect card details
• On-chain payments — Every transaction uses the x402 protocol on Stellar with verifiable on-chain proof

Setup#

bash

npx @asgcard/cli onboard -y

This creates a Stellar wallet ( ~/.asgcard/wallet.json), configures the MCP server, and installs the payment skill. Your agent is ready to pay in under 30 seconds.

MCP Tools (9 available)#

ToolDescriptionget_wallet_statusWallet address, USDC balance, readinesscreate_cardCreate virtual MasterCard (x402 payment)fund_cardTop up existing cardlist_cardsList all wallet cardsget_cardCard summaryget_card_detailsPAN, CVV, expiry (nonce-protected)freeze_cardFreeze a cardunfreeze_cardRe-enable a cardget_pricingCurrent tier pricing

Use Cases#

• Pay for API credits (Anthropic, OpenAI, Google Cloud)
• Provision cloud infrastructure (DigitalOcean, Vercel)
• Buy domains, SaaS subscriptions, and developer tools
• Any merchant that accepts MasterCard

Links#

• Documentation
• npm SDK
• GitHub