Cypher eSIM
Buy no-KYC travel eSIMs and eSIMs with a real phone number in 180+ countries, paid in crypto.
What it does
Cypher eSIM is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.
From the publisher's description, Electra Index matched it to one capability: travel booking. That makes it a candidate for tasks such as book travel.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 2h ago (live check)Hosted endpoint
https://cypheresim.com/mcpstreamable-http
In Claude Code: claude mcp add --transport http cypher-esim https://cypheresim.com/mcp
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"cypher-esim": {
"url": "https://cypheresim.com/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 2h agoONLINE Cypher eSIM answered an MCP connection on 23 Oct 2026 and introduced itself as cypher-esim 1.0.0 (MCP protocol 2025-06-18).
9 tools offered to AI assistants
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 planslist_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 insget_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.list_payment_coins· Coins and networks accepted for payment. Pass coin and network to create_order. Sending on a different network loses the funds.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: inget_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 oncecancel_order· Cancel an unpaid order the person decided not to pay. Do not cancel after the payment was sent.list_topups· Check whether an installed Cypher eSIM can be topped up and list the plans that can be added to it.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.
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.
Tasks it helps with
Share of each task's required capabilities it covers| Book travel Travel Booking | 50% |
Similar tools
Listed for the same task: book travel- hoteloracleREMOTELOCALHotel Intelligence MCP — search, price compare, area guides, price calendars via Google Hotels
- travelpayouts-mcpREMOTELOCALMCP server for Travelpayouts API -- flight search, popular routes, price calendar
- AviasalesREMOTELOCALCheap flight search via Aviasales Data API: fares by route, price calendar, cheapest destinations
- airbnb-dataREMOTELOCALAirbnb search, listing details, and calendar availability as clean structured data
- SlickTripREMOTELOCALLive flight, hotel and seat prices, cheapest-day calendars, and price-drop alerts
- Best Time to Book HotelsREMOTELOCALBest-time-to-book verdicts, live last-minute hotel deals, and city price calendars, from data
Ready-made AI agents
- $15/mo · free plan
- Lindy80$49.99/mo · free plan
- $30/mo
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Hosted endpoint | https://cypheresim.com/mcp | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Local install (package) | no | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Website | https://cypheresim.com/for-ai-agents | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Version | 1.0.0 | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 2h ago |
Change history
- NEW23 Oct 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is Cypher eSIM still online?
Free alerts · no accountQuestions about Cypher eSIM
How do I connect Cypher eSIM?
Use the hosted endpoint https://cypheresim.com/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does Cypher eSIM offer?
When Electra Index connected on 23 Oct 2026, it listed 9 tools: search_destinations, list_plans, get_plan, list_payment_coins, create_order, get_order, cancel_order, list_topups and more. The full list is in "Live check" above.
Is Cypher eSIM online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 2h ago.
What can I use Cypher eSIM for?
Based on its description, it is most relevant to: book travel.