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AgentCard MCP Server

@agent-cards

代码仓库

基本信息

分类

AI 与智能体

许可证

MIT

传输方式

stdio

作者

agent-cards

提交者

Karen Serfaty

关于 AgentCard MCP Server

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

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

AgentCard MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

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

AgentCard MCP Server 工具

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

概览

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

常见问题

1

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.

2

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.

3

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.

4

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.

5

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.

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