Slashtel

Travel data eSIMs in about 200 destinations and mobile top-ups in 100+ countries, live prices.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Travel data eSIMs in about 200 destinations and mobile top-ups in 100+ countries, live prices.

    How to connect

    How to connect Slashtel to Claude

    The server address to paste into Claude settings:

    https://slashtel.com/api/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect Slashtel to ChatGPT

    The server address to paste into ChatGPT settings:

    https://slashtel.com/api/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect Slashtel to Cursor

    The server address to paste into Cursor settings:

    https://slashtel.com/api/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (4)

    Raw names from tools/list. Only developers need these.

    list_esim_destinationsCountries and regions Slashtel sells travel eSIMs for, with the lowest live price (USD) and number of plans. Optional search text filters by name.
    get_esim_plansLive travel eSIM plans for one destination: data (GB), validity (days), price (USD) and price per GB. Use an ISO-2 country code (e.g. TR, JP, US, GB) or a destination code from list_esim_destinations. Optional filters narrow the list.
    get_topup_plansDetects the operator of a mobile number and returns the live top-up options for it: what the recipient receives, validity where it applies, and the price in USD. The number must include the country code, e.g. +911234567890.
    create_checkout_linkReturns a slashtel.com link with the chosen eSIM plan or top-up already selected. Share it with the user: they enter their email and pay on the site. For type 'esim' pass plan_id. For type 'topup' pass phone, operator_code and send_value from get_topup_plans.