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Siima eSIM MCP Server

answering

Siima eSIM is answering right now. Last checked 15 min ago. It exposes 5 tools.

Search travel eSIM plans for 150+ countries and buy via Stripe link; eSIM QR delivered by email.

Uptime history 91 days of history · worst day 96%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
5
Tools
read from the server
233 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 13

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 11 August 2026. No other catalogue keeps this.

4 Oct 4 tool descriptions were rewritten create_checkout_link, get_esim_plan, list_regions and 1 more
21 Sep 3 tool descriptions were rewritten create_checkout_link, get_esim_plan, search_esim_plans
21 Sep a tool changed the parameters it asks for create_checkout_link
13 Aug a tool description was rewritten create_checkout_link
11 Aug 2 tool descriptions were rewritten list_destinations, search_esim_plans
11 Aug a tool appeared list_regions
11 Aug a tool changed the parameters it asks for search_esim_plans

Nothing serious here today

Today is the operative word: we check Siima eSIM every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

run in your terminal
claude mcp add esim --transport http https://api.siima.online/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.siima.online/mcp
~/.codex/config.toml
[mcp_servers.esim]
url = "https://api.siima.online/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "esim": {
      "url": "https://api.siima.online/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "esim": {
      "type": "http",
      "url": "https://api.siima.online/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

esim
get_esim_plan
Fetch full details of a single Siima eSIM plan by its id (from search_esim_plans). To buy: call create_checkout_link with the plan id, give the returned URL to the user. They confirm their email with a 6-digit code and pay there; nothing is ordered until they do. After payment they are emailed a link to their eSIM; opening it on their phone gives a one-tap install, the QR code and manual codes. No account needed.
search_esim_plans
Search prepaid travel eSIM data plans by destination country (ISO 3166-1 alpha-2, e.g. "JP"), region (e.g. "Europe"), minimum data in GB, maximum total price, or plan duration in days. Plans come in three coverage types: "country" (one country), "regional" (a named multi-country area such as "Europe+" or "South East Asia"), and "global" (worldwide). A country filter matches every plan that covers it, of any coverage type — so searching country="FR" returns France-only plans alongside the Europe and worldwide plans that include France. For a trip through several countries, filter coverage_type="regional" or "global" to get one eSIM for the whole route; for a single-country trip a "country" plan is usually cheapest. Returned price is the final amount the customer pays at checkout (all fees included), in the requested currency. To buy: call create_checkout_link with the plan id, give the returned URL to the user. They confirm their email with a 6-digit code and pay there; nothing is ordered until they do. After payment they are emailed a link to their eSIM; opening it on their phone gives a one-tap install, the QR code and manual codes. No account needed.
checkout
create_checkout_link
Create a secure payment link on siima.online for a Siima eSIM plan (Stripe-powered, but hosted on our own site — never a redirect to checkout.stripe.com). Give the returned url to the user to complete payment. Optionally pass the buyer's email to pre-fill the checkout form. The buyer confirms it with a 6-digit code we email them, then pays — nothing is ordered until they do. After payment the buyer is emailed a link to their eSIM within a minute; opening it on their phone gives a one-tap install, the QR code and manual installation codes. No account or signup is required.
destinations
list_destinations
List all countries Siima sells a single-country eSIM plan for, with plan counts and the cheapest total price per country. Country codes are ISO 3166-1 alpha-2. Counts and prices cover country plans only, so they stay comparable — many more countries are reachable via multi-country plans; call list_regions for those.
regions
list_regions
List every multi-country coverage area Siima sells — regional areas such as "Europe+", "South East Asia" or "CENAM", and worldwide plans — with the countries every plan in it covers, how many plans it has, and its cheapest total price. Use this for a trip crossing several countries: pick a coverage area whose `countries` list contains the whole itinerary, then pass its name as `coverage` to search_esim_plans. `countries_on_some_plans` lists countries only some of the area's plans include — if the itinerary needs one, confirm the chosen plan covers it with get_esim_plan before buying. For a single-country trip use list_destinations instead.

Endpoints

URLTransportStateLatencyChecked
https://api.siima.online/mcp streamable-http answering 218 ms 15 min ago

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Siima eSIM — questions

Answers built from our own checks of this server.

What can Siima eSIM do?
It exposes 5 tools, read directly from the server on our last check. Among them: create_checkout_link, get_esim_plan, list_destinations, list_regions, search_esim_plans. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Siima eSIM working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 233 ms. The bar chart above shows every period we have measured.
How do I connect Siima eSIM?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Siima eSIM need an API key?
No. Siima eSIM completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Siima eSIM?
It answers our handshake in 233 ms on average, which is faster than 61% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.