Cypher eSIM MCP Server

by cypheresim Your server? Claim it

answering

Cypher eSIM is answering right now. Last checked 9 min ago. It exposes 9 tools.

Buy no-KYC travel eSIMs and eSIMs with a real phone number in 180+ countries, paid in crypto.

Uptime history 49 hours of history

49 hours agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

213 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Cypher 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 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

Settings → Connectors → Add custom connector, then paste this address

https://cypheresim.com/mcp

~/.codex/config.toml

[mcp_servers.esim]
url = "https://cypheresim.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "esim": {
      "url": "https://cypheresim.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "esim": {
      "type": "http",
      "url": "https://cypheresim.com/mcp"
    }
  }
}

Available tools 9

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

order

create_order

Create a crypto invoice for one new eSIM. Before calling, confirm the plan with the person and tell them when validity starts and the plan notes (number plans: validity starts at installation; Europe number is French +33; UK number plan: install only after arrival). Returns order_id, order_token, the exact amount and the address. The person must send exactly that amount on that network before expires_at. Then poll get_order. Unpaid invoices per client are limited; cancel unused ones with cancel_order.

get_order

Order status: pending (waiting for payment), paid (issuing), delivered, expired, failed. When delivered, returns for each eSIM: QR code (also as an image), LPA activation code, ICCID, and one-tap iOS/Android install links. Call at most once every 5 seconds.

cancel

cancel_order

Cancel an unpaid order the person decided not to pay. Do not cancel after the payment was sent.

destinations

search_destinations

Find a country, region or "world" destination by name or ISO code. Returns destination codes for list_plans (country: ISO2 like "JP"; region: like "R-EUROPE"; world: "WORLD"), starting prices in USD, and how many data and phone-number plans exist. An empty query lists all destinations.

payment

list_payment_coins

Coins and networks accepted for payment. Pass coin and network to create_order. Sending on a different network loses the funds.

plan

get_plan

Full details of one plan: all covered countries, data, days, phone number (if any), install rules, when validity starts, and notes. Read the notes to the person before create_order.

plans

list_plans

List purchasable plans for a destination, cheapest first. type "data" = data-only eSIM: validity starts on first connection at the destination. type "number" = eSIM with a phone number, calls and SMS: validity starts at installation, so install it just before use; Europe plans give a French +33 number; the UK number plan must be installed only after arrival in the UK. For a country without its own plans, regional and world plans that cover it are returned. Prices are final USD prices; the crypto amount is set at create_order.

topup

create_topup

Create a crypto invoice that adds a data plan to an existing eSIM (no new QR, nothing to install). plan_id must come from list_topups for this ICCID. Payment and polling work exactly like create_order.

topups

list_topups

Check whether an installed Cypher eSIM can be topped up and list the plans that can be added to it.

Endpoints

URL	Transport	State	Latency	Checked
https://cypheresim.com/mcp	streamable-http	answering	206 ms	9 min ago

Alternatives to Cypher eSIM

same job, measured the same way

Buyukesim

by buyukesim

No-logs VPN, real UK +44 number eSIMs and travel-data eSIMs, bought with crypto. No KYC, no account.

21 tools answering

PikaSim

by pikasim

Anonymous eSIMs, phone numbers, and SMS codes in 190+ countries. Crypto-paid; agents self-onboard.

31 tools answering

Hardline Phone

by hardlinephone

Dedicated remote-access US-based Android phones with a real US number. Pay crypto, control via MCP.

answering

AgentRoam

by agentroam

Buy travel eSIMs, gift cards and mobile top-ups with crypto — user confirms before any order.

11 tools answering

Worldcitisim eSIM

by worldcitisim

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

29 installs/wk local only

Siima eSIM

by siima

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

5 tools answering

Tanod Image OCR (Apify, card-paid)

by tanod

Image OCR via Apify. Pay by card with an Apify account, no crypto wallet.

answering

Occultron

by luckyjupiter

Crypto-paid uncensored LLM inference with signed execution receipts. No account.

local only

Cypher eSIM — questions

Answers built from our own checks of this server.

What can Cypher eSIM do?

It exposes 9 tools, read directly from the server on our last check. Among them: cancel_order, create_order, create_topup, get_order, get_plan, list_payment_coins and 3 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 Cypher 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 213 ms. The bar chart above shows every period we have measured.

How do I connect Cypher 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 Cypher eSIM need an API key?

No. Cypher eSIM completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 9 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Cypher eSIM?

It answers our handshake in 213 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.