Slashtel MCP server

Which servers in the official MCP registry are Slashtel's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

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Whose server it is

Registry namecom.slashtel/slashtelverified in the MCP registry

The registry name sits under slashtel.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19

Stateanswerschecked 2026-10-19
Tools4
Server calls itselfslashtel
Server version1.0.1
Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 190 ms.

Measured dailydaily checks: 2, the first on 2026-10-19

Answeredmeasuring2 of the 7 daily checks it takes to print a share
Median first answer203 ms
Space in an agent's context≈ 528 tokensthe definitions of all its tools (4), which an agent carries on every turn
Tool definitionsA · 96 of 100

Parameters without a description: in 1 of 4

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers4 tools · read 2026-10-19

list_esim_destinations
Countries and regions Slashtel sells travel eSIMs for, with the lowest live price (USD) and number of plans. Optional search text filters by name.
get_esim_plans
Live travel eSIM plans for one destination: data (GB), validity (days), price (USD) and price per GB. Use an ISO-2 country code (e.g. TR, JP, US, GB) or a destination code from list_esim_destinations. Optional filters narrow the list.
get_topup_plans
Detects the operator of a mobile number and returns the live top-up options for it: what the recipient receives, validity where it applies, and the price in USD. The number must include the country code, e.g. +911234567890.
create_checkout_link
Returns a slashtel.com link with the chosen eSIM plan or top-up already selected. Share it with the user: they enter their email and pay on the site. For type 'esim' pass plan_id. For type 'topup' pass phone, operator_code and send_value…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "slashtel": {
      "type": "http",
      "url": "https://slashtel.com/api/mcp"
    }
  }
}

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.