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ALT eSIM MCP Server

by altesim Your server? Claim it
answering

ALT eSIM is answering right now. Last checked 8 min ago. It exposes 7 tools.

Search & buy travel data eSIMs for 70+ destinations — pay by Stripe link, get the eSIM QR. USD.

Uptime history 90 days of history · worst day 94%
90 days agonow
100.0%
Uptime 24h
91 of 91 checks
7
Tools
read from the server
756 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 130

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 August 2026. No other catalogue keeps this.

28 Oct 2 tools appeared get_shop_facts, recommend_plans
28 Oct a tool description was rewritten list_destinations
28 Oct a tool changed version
27 Oct a tool changed version2 times that day
26 Oct a tool changed version
21 Oct a tool changed version
19 Oct a tool changed version2 times that day
16 Oct a tool changed version4 times that day
14 Oct a tool changed version3 times that day
13 Oct a tool changed version
and 119 more, back to 8 August 2026

Nothing serious here today

Today is the operative word: we check ALT 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 8 min ago.

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

Available tools 7

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
Get one Alt eSIM plan by its sku or id. Returns full details: title, data amount, validity days, USD price, coverage carriers, product URL.
search_esim_plans
Search Alt eSIM travel data plans. Filter by destination country slug (e.g. 'japan', 'usa', 'europe'), region, and/or max USD price. Returns plans with sku, data amount, validity days, USD price and coverage carriers. All prices are USD.
checkout
create_checkout
Create a secure Stripe payment link for an Alt eSIM plan. Returns a payment URL the BUYER opens to pay (the agent never handles card details) AND a checkout_session_id. After the buyer pays, call get_qr_code with that checkout_session_id to fetch the eSIM QR and show it to the buyer. The QR is also emailed. Charged in USD. You MUST collect the buyer's real email.
code
get_qr_code
Fetch the eSIM QR code(s) for an order, to show the buyer directly. Pass the checkout_session_id from create_checkout. Returns a clear `status`: 'awaiting_payment' (buyer has NOT paid — tell them to pay), 'processing' (paid, eSIM still provisioning — retry in ~30s), 'manual_review' (paid, activation paused for security review; ask buyer to contact [email protected] with the order reference), 'ready' (returns the QR image(s) + ICCID(s) to display), 'expired', 'refunded', or 'failed'. Use the status to tell the buyer exactly what's happening — never assume payment succeeded.
destinations
list_destinations
List all Alt eSIM destinations (country/region slugs with English names and region). Use a slug as the 'country' argument for search_esim_plans / recommend_plans.
recommend
recommend_plans
Recommend up to a few real catalog plans for one destination. Ranks existing SKUs by trip days and usage (light≈0.5 / normal≈1.5 / heavy≈4 GB/day) — never invents prices or URLs. Prefer this for 'what should I buy?'.
shop
get_shop_facts
Shop rules for Alt eSIM in the shop's own words: product model, currency, refund policy, payment/delivery, and how agents must quote prices/URLs. Call this before recommending or buying.

Endpoints

URLTransportStateLatencyChecked
https://altesim.com/api/mcp streamable-http answering 489 ms 8 min ago

Alternatives to ALT eSIM

same job, measured the same way
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ALT eSIM — questions

Answers built from our own checks of this server.

What can ALT eSIM do?
It exposes 7 tools, read directly from the server on our last check. Among them: create_checkout, get_esim_plan, get_qr_code, get_shop_facts, list_destinations, recommend_plans and 1 more. 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 ALT 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 756 ms. The bar chart above shows every period we have measured.
How do I connect ALT 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 ALT eSIM need an API key?
No. ALT eSIM completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is ALT eSIM?
It answers our handshake in 756 ms on average, which is faster than 12% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.