Agent Cards Skill — AI skill for Claude Code

agent-card skill

Give your AI agent a debit card. [Agent Cards](https://agentcard.sh) lets AI agents create and spend prepaid virtual Visa cards — each with a fixed budget, real card credentials, and full MCP integration. This skill teaches your agent how to use them.

Works with Claude Code, Codex, and any agent that supports [skills.sh](https://skills.sh).

Setup

1. Create an Agent Cards account

npx agent-cards signup

2. Connect the MCP server

**Option A — Automatic (Claude Code)**

npx agent-cards setup-mcp

This auto-configures Claude Code with the hosted MCP server. Restart Claude Code after running.

**Option B — Manual (any MCP client)**

Add to your MCP client config (Claude Desktop, Cursor, etc.):

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

Get your JWT from `~/.agent-cards/config.json` after signing up.

See the [MCP server repo](https://github.com/agent-cards/mcp) for more options (stdio, self-hosted, etc.).

3. Install the skill

npx skills add agent-cards/skill

What it does

Once installed, your agent knows how to:

• Create cards — set a dollar amount, complete Stripe Checkout, get a card back
• Check balances — quick balance lookup, formatted as dollars
• View card credentials — full card number, CVV, expiry (with email approval for security)
• Close cards — permanent closure with user confirmation
• Get support — open and manage support conversations

Usage

Use the `/agent-card` slash command in Claude Code:

/agent-card

Or just ask naturally — the skill activates when your agent detects card management intent.

Example prompts

• "List my cards"
• "Create a $50 test card"
• "What's the balance on my card?"
• "I need the card number to pay for something"
• "Close card xyz"
• "I need help with my card"

MCP Tools

...