ALT eSIM MCP Server

by altesim Your server? Claim it

answering

ALT eSIM is answering right now. Last checked 3 min ago. It exposes 5 tools.

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

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

1232 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 79

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

18 Sep a tool changed version

11 Sep a tool changed version7 times that day

5 Sep a tool changed version

3 Sep a tool changed version

29 Aug a tool changed version4 times that day

28 Aug a tool changed version5 times that day

25 Aug a tool changed version5 times that day

23 Aug a tool changed version

22 Aug a tool changed version14 times that day

22 Aug a tool changed the parameters it asks for2 times that day create_checkout

and 69 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.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add esim --transport http https://altesim.com/api/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "esim": {
      "url": "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

{
  "mcpServers": {
    "esim": {
      "url": "https://altesim.com/api/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

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), '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.

Endpoints

URL	Transport	State	Latency	Checked
https://altesim.com/api/mcp	streamable-http	answering	1974 ms	3 min ago

Alternatives to ALT eSIM

same job, measured the same way

Siima eSIM

by siima

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

5 tools answering

eSIM Tabby

by esimtabby

Buy and manage travel eSIM data plans in the conversation. Pay by card (Stripe) or USDC over x402.

11 tools answering

LocationLists

by kylehawke-stack

US business location data: search, sample, count, query rows or buy CSVs (Stripe or x402 USDC).

16 tools answering

Worldcitisim eSIM

by worldcitisim

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

93 installs/wk local only

Zen

by krystiangw

Unofficial MCP server for the ZEN.com Payment Gateway: payment links, transactions, refunds.

22 installs/wk local only

X402 Middleware

by gadgethumans-swarm

One-line x402 + Stripe payment middleware for MCP servers. The Stripe for the agent economy.

local only

Flowcheck

by eliaskress

Stripe payouts, Shopify orders, and bank transactions unified for reconciliation and cash flow

28 installs/wk local only

STRIDE Sneaker Shop

by sneaker-hub

Pre-owned sneaker shop catalog: search in-stock shoes by keyword/brand/price, get buy links.

3 tools answering

ALT eSIM — questions

Answers built from our own checks of this server.

What can ALT eSIM do?

It exposes 5 tools, read directly from the server on our last check. Among them: create_checkout, get_esim_plan, get_qr_code, list_destinations, 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 ALT eSIM working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 1232 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 with the file path 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 5 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 1232 ms on average, which is faster than 4% 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.