Cypher eSIM MCP

This official MCP server allows AI agents to purchase no-KYC travel eSIMs and data plans in 180+ countries using cryptocurrency. It supports searching destinations, listing plans, creating crypto invoices, polling order status, and retrieving QR codes or installation links for eSIM activation without requiring user authentication or API keys for standard usage.

Visit Cypher eSIM

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Vendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-01Operated by Cypher eSIM

MCP endpoint (Streamable HTTP)

https://cypheresim.com/mcp

Vendor documentation

What you can do with it

Search for available eSIM destinations and plans
Create a crypto payment invoice for an eSIM
Retrieve QR codes and installation links after payment
Top up existing eSIMs with additional data

Source and maintenance

Vendor evidenceRegistry 1.0.0

mcp-registry: com.cypheresim/esim@1.0.0 Project website

Protocol and capabilities

Server: cypher-esim 1.0.0
MCP protocol: 2025-06-18
Tools: 9 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Cypher eSIM sells prepaid travel eSIMs (data-only, and plans with a phone number) for crypto. No account, no name, no email. Flow: search_destinations → list_plans → get_plan → tell the person the plan notes → create_order → the person pays the exact amount → get_order until status is "delivered" → give the person the QR code (qr_png_url) or the iOS/Android install link. Before create_order, always tell the person: when validity starts, and any plan notes. Number plans: validity starts at installation; the number is French (+33) for Europe plans; the UK number plan must be installed only after arrival in the UK. Never invent prices or coverage: use only what the tools return. Keep order_token private: it is the only key to the eSIM QR code.

Tools

9 advertised

search_destinations — Search destinations

Advertised by the server during the last successful anonymous check.

Advertised read-only

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.

search_destinations input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 300,
      "minimum": 1,
      "description": "Max results, default 20"
    },
    "query": {
      "type": "string",
      "maxLength": 60,
      "description": "Country or region name, or ISO2 code, e.g. \"Japan\", \"JP\", \"Europe\""
    }
  },
  "additionalProperties": false
}

search_destinations annotations

{
  "title": "Search destinations",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

list_plans — List plans

Advertised by the server during the last successful anonymous check.

Advertised read-only

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.

list_plans input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "destination"
  ],
  "properties": {
    "type": {
      "enum": [
        "data",
        "number"
      ],
      "type": "string",
      "description": "\"data\" (default) or \"number\" (plan with a phone number)"
    },
    "destination": {
      "type": "string",
      "maxLength": 40,
      "minLength": 2,
      "description": "Destination code from search_destinations, or a country ISO2 code"
    },
    "include_regional": {
      "type": "boolean",
      "description": "For a country: also return regional/world plans covering it"
    }
  },
  "additionalProperties": false
}

list_plans annotations

{
  "title": "List plans",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

get_plan — Get plan

Advertised by the server during the last successful anonymous check.

Advertised read-only

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.

get_plan input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "plan_id"
  ],
  "properties": {
    "plan_id": {
      "type": "string",
      "maxLength": 80,
      "minLength": 3,
      "description": "plan_id from list_plans"
    }
  },
  "additionalProperties": false
}

get_plan annotations

{
  "title": "Get plan",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

list_payment_coins — List payment coins

Advertised by the server during the last successful anonymous check.

Advertised read-only

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

list_payment_coins input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

list_payment_coins annotations

{
  "title": "List payment coins",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

create_order — Create order

Advertised by the server during the last successful anonymous check.

Open-world

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.

create_order input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "plan_id",
    "coin"
  ],
  "properties": {
    "ref": {
      "type": "string",
      "maxLength": 32,
      "description": "Optional partner/referral code"
    },
    "coin": {
      "type": "string",
      "maxLength": 10,
      "minLength": 2,
      "description": "Coin code from list_payment_coins, e.g. \"USDT\", \"BTC\", \"XMR\""
    },
    "network": {
      "type": "string",
      "maxLength": 40,
      "minLength": 2,
      "description": "Network from list_payment_coins, e.g. \"tron\", \"solana\". Required for USDT (several networks)."
    },
    "plan_id": {
      "type": "string",
      "maxLength": 80,
      "minLength": 3,
      "description": "plan_id from list_plans"
    },
    "quantity": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1,
      "description": "Resellers with an API key only: number of identical eSIMs on one invoice (1-50). Omit otherwise."
    },
    "client_ref": {
      "type": "string",
      "maxLength": 64,
      "description": "Resellers only: your own order reference, returned as is."
    }
  },
  "additionalProperties": false
}

create_order annotations

{
  "title": "Create order",
  "readOnlyHint": false,
  "openWorldHint": true,
  "idempotentHint": false,
  "destructiveHint": false
}

get_order — Get order

Advertised by the server during the last successful anonymous check.

Advertised read-only

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.

get_order input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "order_id",
    "order_token"
  ],
  "properties": {
    "order_id": {
      "type": "string",
      "maxLength": 40,
      "minLength": 10,
      "description": "order_id returned by create_order"
    },
    "order_token": {
      "type": "string",
      "maxLength": 64,
      "minLength": 20,
      "description": "order_token returned by create_order"
    }
  },
  "additionalProperties": false
}

get_order annotations

{
  "title": "Get order",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": false,
  "destructiveHint": false
}

cancel_order — Cancel order

Advertised by the server during the last successful anonymous check.

Advertised destructive

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

cancel_order input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "order_id",
    "order_token"
  ],
  "properties": {
    "order_id": {
      "type": "string",
      "maxLength": 40,
      "minLength": 10,
      "description": "order_id returned by create_order"
    },
    "order_token": {
      "type": "string",
      "maxLength": 64,
      "minLength": 20,
      "description": "order_token returned by create_order"
    }
  },
  "additionalProperties": false
}

cancel_order annotations

{
  "title": "Cancel order",
  "readOnlyHint": false,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": true
}

list_topups — List top-ups

Advertised by the server during the last successful anonymous check.

Advertised read-only

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

list_topups input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "iccid"
  ],
  "properties": {
    "iccid": {
      "type": "string",
      "maxLength": 26,
      "minLength": 18,
      "description": "ICCID of the installed eSIM (18-22 digits, printed in the eSIM settings)"
    }
  },
  "additionalProperties": false
}

list_topups annotations

{
  "title": "List top-ups",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

create_topup — Create top-up

Advertised by the server during the last successful anonymous check.

Open-world

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.

create_topup input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "iccid",
    "plan_id",
    "coin"
  ],
  "properties": {
    "coin": {
      "type": "string",
      "maxLength": 10,
      "minLength": 2,
      "description": "Coin code from list_payment_coins, e.g. \"USDT\", \"BTC\", \"XMR\""
    },
    "iccid": {
      "type": "string",
      "maxLength": 26,
      "minLength": 18,
      "description": "ICCID of the installed eSIM (18-22 digits, printed in the eSIM settings)"
    },
    "network": {
      "type": "string",
      "maxLength": 40,
      "minLength": 2,
      "description": "Network from list_payment_coins, e.g. \"tron\", \"solana\". Required for USDT (several networks)."
    },
    "plan_id": {
      "type": "string",
      "maxLength": 80,
      "minLength": 3,
      "description": "plan_id from list_plans"
    }
  },
  "additionalProperties": false
}

create_topup annotations

{
  "title": "Create top-up",
  "readOnlyHint": false,
  "openWorldHint": true,
  "idempotentHint": false,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 577 ms
95th percentile latency: 577 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 1, 2026, 7:24 AM UTC · probe · passed · 577 ms · metadata changed · 9 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

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

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add cypher-esim-mcp --url https://cypheresim.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cypher-esim-mcp in your MCP settings.

Cursor configuration

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

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "cypher-esim-mcp": {
      "type": "streamableHttp",
      "url": "https://cypheresim.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cypher-esim-mcp and inspect its tools.

VS Code configuration

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

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

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

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

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

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "cypher-esim-mcp": {
      "serverUrl": "https://cypheresim.com/mcp"
    }
  }
}

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Cypher eSIM MCP

Endpoint and access

What you can do with it

Source and maintenance

Protocol and capabilities

Server-provided instructions

Tools

Prompts

Resources

30-day availability

Maintenance history

Connect from your client

Claude Code

Codex

Cursor

Cline

VS Code

Gemini CLI

Claude Desktop

Windsurf

Let your agent find its tools

Other commerce servers

Do you run Cypher eSIM MCP?