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eSIM SOS

by esimsos.net · remote · no sign-in to list tools · v1.0.0 · published by net.esimsos

Find travel eSIM plans, compare prices and create an order the user pays by link.

Changes · 2
CompareRegistry entry

6 tools: 2 change things and 4 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http esimsos https://esimsos.net/api/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warninstall_instructions

    The server marks "install_instructions" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "install_instructions" says "install": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Changes things 2Claude Code: ask
  • create_orderCreate an unpaid eSIM order and get a payment link.No findings

    Why it is in this group

    • The name "create_order" says "create": a word for a change.
    Description, as the server wrote it
    Create an unpaid eSIM order and get a payment link. Payment is always done by the human: give the user the payment link, never try to pay yourself and never ask for card details. Ask the user for their email first: the eSIM QR code is sent there. Creates a real order, so call it only after the user picked the plan.

    Annotations the server declares

    • title: Create order (returns payment link)
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
  • install_instructionsAfter payment: link to the order page with the QR code and step-by-step eSIM install instructions for iPhone and Android.1 finding

    Why it is in this group

    • The name "install_instructions" says "install": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "install_instructions" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "install_instructions" says "install": a word for a change.

      What this check looks for
    Description, as the server wrote it
    After payment: link to the order page with the QR code and step-by-step eSIM install instructions for iPhone and Android. Requires order_id and email.

    Annotations the server declares

    • title: Install instructions
    • readOnlyHint: true
    • openWorldHint: false
Only reads 4Claude Code: allow
  • compare_pricesCompare eSIM prices of several providers for a country and data size using the open esimdar.com dataset (CC BY 4.0).No findings

    Why it is in this group

    • The name "compare_prices" says "compare": a word for reading.
    Description, as the server wrote it
    Compare eSIM prices of several providers for a country and data size using the open esimdar.com dataset (CC BY 4.0). Disclosure: esimdar.com is owned and run by eSIM SOS, the shop behind this server; eSIM SOS is listed as an ordinary row. Tell the user about this ownership and present the results neutrally.

    Annotations the server declares

    • title: Compare eSIM prices
    • readOnlyHint: true
    • openWorldHint: true
  • list_plansList eSIM data plans for a country with final prices in RUB (one price for every payment method).No findings

    Why it is in this group

    • The name "list_plans" says "list": a word for reading.
    Description, as the server wrote it
    List eSIM data plans for a country with final prices in RUB (one price for every payment method). Local plans first, then regional ones.

    Annotations the server declares

    • title: List eSIM plans
    • readOnlyHint: true
    • openWorldHint: false
  • order_statusCheck the payment and delivery status of an order.No findings

    Why it is in this group

    • The name "order_status" says "status": a word for reading.
    Description, as the server wrote it
    Check the payment and delivery status of an order. Requires both order_id and the email used for the order.

    Annotations the server declares

    • title: Order status
    • readOnlyHint: true
    • openWorldHint: false
  • search_destinationsFind a travel destination (country) sold by eSIM SOS by name in English or Russian, or by ISO code.No findings

    Why it is in this group

    • The name "search_destinations" says "search": a word for reading.
    Description, as the server wrote it
    Find a travel destination (country) sold by eSIM SOS by name in English or Russian, or by ISO code. Returns country codes for list_plans.

    Annotations the server declares

    • title: Search destinations
    • readOnlyHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http esimsos https://esimsos.net/api/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__esimsos__search_destinations",
      "mcp__esimsos__list_plans",
      "mcp__esimsos__compare_prices",
      "mcp__esimsos__order_status"
    ],
    "ask": [
      "mcp__esimsos__create_order",
      "mcp__esimsos__install_instructions"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as esimsos. Review it before you use it.