cartapi.io / install v0.2

install cartapi

Add cartapi to any AI assistant. One URL, no API keys.

Once installed, your assistant can find and buy mobile top-ups, travel eSIMs, gift cards, and VPN credits on your behalf — with your explicit consent on every charge.

the endpoint

MCP https://mcp.cartapi.io/mcp

cartapi speaks the Model Context Protocol (MCP) over Streamable HTTP. That's the same URL for every client below.

ChatGPT Plus · Pro · Business · Enterprise

  1. Open Settings → Connectors
  2. Click Add custom connector
  3. Name: cartapi   URL: https://mcp.cartapi.io/mcp
  4. Save, start a new chat, try a prompt below

Free-tier ChatGPT accounts can't add custom connectors yet.

Claude claude.ai · Claude Desktop

  1. Open Settings → Connectors → Add custom connector
  2. URL: https://mcp.cartapi.io/mcp
  3. Save and start a new chat

Perplexity Pro · Comet browser

  1. Open Comet → Settings → Model Context Protocol
  2. Click Add MCP server
  3. URL: https://mcp.cartapi.io/mcp
  4. Save. Available in any Perplexity Space

Free-tier Perplexity accounts can't add custom MCP servers.

Claude Code CLI

$ claude mcp add cartapi https://mcp.cartapi.io/mcp

Cursor IDE

  1. Open Cursor Settings → MCP (or Cmd+Shift+J)
  2. Click Add new global MCP server
  3. Name: cartapi   URL: https://mcp.cartapi.io/mcp

Or edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "cartapi": { "url": "https://mcp.cartapi.io/mcp" }
  }
}

Windsurf IDE

  1. Open Cascade → MCP servers (hammer icon)
  2. Click Add server
  3. URL: https://mcp.cartapi.io/mcp
  4. Save and refresh Cascade

Zed editor

Open settings.json (Cmd+,) and add:

{
  "context_servers": {
    "cartapi": {
      "source": "custom",
      "url": "https://mcp.cartapi.io/mcp"
    }
  }
}

Warp terminal

  1. Open Settings → AI → MCP servers
  2. Click + Add
  3. Name: cartapi   URL: https://mcp.cartapi.io/mcp
  4. Save. Warp's agent will use cartapi for any matching prompt

Gemini API / Vertex AI / AI Studio

Register https://mcp.cartapi.io/mcp as a tool source in your agent config.

The consumer Gemini app (gemini.google.com) doesn't support arbitrary MCP connectors yet — only Google-curated Extensions. If that's your target, cartapi is not installable there today.

Any other MCP client fallback

If your client only supports stdio MCP, bridge to the HTTP endpoint:

$ npx mcp-remote https://mcp.cartapi.io/mcp

try it

Payment happens on a hosted checkout page. cartapi never sees your card, and your assistant asks before every charge.