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AgentCard

@agent-cards

リポジトリ

AgentCard について

MCP server for Agent Cards — prepaid virtual Visa cards for AI agents

#payments#virtual-card#fintech#ai-agent#mcp#mastercard#debit-card

基本情報

カテゴリ

AI とエージェント

ライセンス

MIT

ランタイム

node

トランスポート

stdio

公開者

agent-cards

投稿者

Karen Serfaty

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "agent-cards": {
      "url": "https://mcp.agentcard.sh/mcp",
      "headers": {
        "Authorization": "Bearer <your-jwt>"
      }
    }
  }
}

ツール

16

List all virtual cards with balances, expiry, and status

Create a new virtual debit card with a fixed USD budget

Get decrypted PAN, CVV, expiry (may require human approval)

Fast balance check without exposing credentials

Permanently close a virtual card

List transactions for a card with optional status filter

Approve or deny a pending human-in-the-loop request

Submit identity info for card issuance verification

Set up a payment method for funding cards

Remove a saved payment method

Auto-detect and pay a checkout page using an AgentCard

Detect checkout forms on the current browser tab

Fill card credentials into a payment form in the browser

Start a support conversation

Send a message in a support thread

Read support conversation history

概要

What is AgentCard?

AgentCard lets AI agents create and spend virtual debit cards, each with a fixed budget, real card credentials, and full MCP integration. Your agent can create a card, pay for things, check its balance, and auto-fill checkout forms without ever needing your personal card.

How to use AgentCard?

The fastest setup is via the CLI: run npx agent-cards signup (one-time) then npx agent-cards setup-mcp to auto-configure Claude Code. Alternatively, you can manually add a Streamable HTTP or stdio MCP server entry to your client config, providing your JWT token via header or environment variable.

Key features of AgentCard

  • Create virtual debit cards with a fixed USD budget
  • Retrieve decrypted PAN, CVV, and expiry (with human approval)
  • Auto-detect and pay checkout pages in the browser
  • Fill card credentials into payment forms automatically
  • List cards, check balances, and list transactions
  • Human-in-the-loop approval for sensitive operations

Use cases of AgentCard

  • An AI assistant pays for an online service using a dedicated virtual card
  • An agent fills checkout forms with its own card credentials, keeping your personal card safe
  • A developer gives their AI agent a prepaid budget to purchase tools or subscriptions autonomously
  • An agent closes or replaces a compromised virtual card without human intervention
  • A support bot starts a human chat when a request requires manual approval

FAQ from AgentCard

How do I get a JWT token to authenticate my MCP client?

Run npx agent-cards login; the JWT is stored in ~/.agent-cards/config.json. Use it in the Authorization header for HTTP mode or as the AGENT_CARDS_JWT environment variable for stdio mode.

What transport protocols does AgentCard support?

AgentCard supports both Streamable HTTP (recommended) and stdio transports. The server auto‑discovers its MCP endpoint via the /.well-known/mcp/server-card.json path.

What environment variables are required?

AGENT_CARDS_API_URL is required for all modes. For stdio mode you must also set AGENT_CARDS_JWT. The PORT variable is optional (defaults to 3002) for HTTP mode.

Are there human‑in‑the‑loop approval steps?

Yes. Getting decrypted card details (get_card_details) may require human approval. Use the approve_request tool to approve or deny pending requests.

How can I contact support through the server?

Use the start_support_chat tool to begin a conversation, then send_support_message and read_support_chat to interact with the support thread.

コメント

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