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Worldcitisim eSIM

Official registry Productivity

Travel eSIMs for 193 countries. Stripe + Bitcoin checkout. QR by email in 30s. No API key.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @worldcitisim/mcp-esim
Claude Code 
claude mcp add worldcitisim-esim -- npx -y @worldcitisim/mcp-esim@0.2.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "worldcitisim-esim": {
            "command": "npx",
            "args": [
                "-y",
                "@worldcitisim/mcp-esim@0.2.2"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. @worldcitisim/mcp-esim
  2. Install
  3. Tools exposed
  4. Example interaction
  5. Environment
  6. Runtime
  7. Development
  8. Related
  9. License

@worldcitisim/mcp-esim

MCP server that lets Claude and other MCP-compatible agents search and buy WorldCitiSim eSIM plans. Wraps https://shop.worldcitisim.com/wp-json/esim/v1/*.

Install

Claude Desktop / Claude Code
claude mcp add --scope user wcs-esim npx -y @worldcitisim/mcp-esim

Or paste into ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "worldcitisim-esim": {
      "command": "npx",
      "args": ["-y", "@worldcitisim/mcp-esim"]
    }
  }
}
Cursor / Windsurf / other MCP clients

Same shape — command: "npx", args: ["-y", "@worldcitisim/mcp-esim"].

ChatGPT Developer Mode

Settings → Developer Mode → Add MCP server → same npx command.

Tools exposed

ToolPurpose
esim_search_plansFilter catalog by country / region / days / GB. Returns matching plans with their first 5 variations.
esim_get_planFetch one plan by slug with all variations.
esim_create_orderCreate a pending order. payment_method: "stripe" (default) returns a Stripe Checkout URL for the user to tap; payment_method: "btc" returns an on-chain btc block (address + amount + QR) to show the user directly. Both return an order_token for polling.
esim_check_orderPoll an order's status. Returns activation data (ICCID, QR URL) once payment clears.

Example interaction

User: I'm going to Japan for 10 days, what eSIM should I get?

Claude calls: esim_search_plans({ country: "japan", min_days: 7, max_days: 15 })
→ returns matching plans with variations priced and in stock.

Claude picks the best match, presents 2–3 options to the user.

User: the 10GB one

Claude: "Pay by card or Bitcoin?"

User: card

Claude calls: esim_create_order({ email: "user@example.com", variation_id: 44941 })
→ returns { order_id, order_token, payment_link_url }.

Claude: "Tap this link to pay: <Stripe URL>. You'll get the eSIM QR in your email within ~30 seconds."

User pays. Claude optionally polls esim_check_order until status=completed.

For Bitcoin, Claude calls esim_create_order({ ..., payment_method: "btc" }) and gets back a btc block — { address, sats_amount, btc_amount, qr_data_uri, expires_at } — which it shows the user to pay from any on-chain wallet. No redirect. If BTC is declined for a small order during a network-fee spike, the call returns a btc_unavailable error and Claude offers card instead. Either way, esim_check_order polls until status=completed.

Environment

  • WCS_ESIM_API_BASE — override the API base URL. Default: https://shop.worldcitisim.com/wp-json/esim/v1.

Runtime

  • Node 20.11+ (for native fetch + ESM).
  • No secrets. No Stripe credentials touch this process. Payment happens on Stripe's hosted checkout page; the MCP just hands the agent the URL.
  • Catalog is client-side cached 5 minutes + ETag-aware; multiple search calls within a minute don't hit the network.

Development

npm install
npm run dev                 # stdio MCP server on this terminal
npm run build               # compile to dist/

Point a Claude Code session at the local dev build:

claude mcp add wcs-esim-dev node "$(pwd)/dist/index.js"

License

MIT

Frequently asked questions

What is Worldcitisim eSIM?

Travel eSIMs for 193 countries. Stripe + Bitcoin checkout. QR by email in 30s. No API key.

How do I install Worldcitisim eSIM?

It runs on your machine. In Claude Code: claude mcp add worldcitisim-esim -- npx -y @worldcitisim/mcp-esim@0.2.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Worldcitisim eSIM need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Worldcitisim eSIM open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Worldcitisim eSIM?

It is published by isabellaliebgott. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.