Joltsms MCP Server

MCP server for JoltSMS — provision real-SIM phone numbers and receive OTP codes

Local serverstdio

What is the Joltsms MCP server?

Connect Joltsms to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP server for JoltSMS — provision real-SIM phone numbers and receive OTP codes. The joltsms mcp server is what makes that connection.

What the server does

MCP server for JoltSMS — provision dedicated real-SIM US phone numbers and receive SMS/OTP codes through AI agents.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • joltsms_list_numbers — List active numbers with service labels, tags, and unread counts
  • joltsms_get_number — Full details for a single number
  • joltsms_update_number — Set service label, tags, or notes on a number
  • joltsms_provision_number — Rent a new dedicated real-SIM US number ($50/mo)
  • joltsms_release_number — Cancel/release a number at end of billing period
  • joltsms_list_messages — List recent SMS with parsed OTP codes
  • joltsms_mark_read — Mark single or bulk messages as read
  • joltsms_wait_for_sms — Poll until an SMS arrives (key tool for OTP flows)
  • joltsms_get_latest_otp — Get the most recent parsed verification code
  • joltsms_billing_status — Check all subscriptions with billing health

Credentials and setup notes

Configuration is passed through the environment: JOLTSMS_API_KEY, JOLTSMS_API_URL. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

  • Node.js 18+ - A JoltSMS account with a payment method on file - Your first number must be ordered through the Dashboard to complete initial 3D Secure verification

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Where it fits

This sits in the payments and commerce group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Joltsms's toolset — joltsms_list_numbers, joltsms_get_number, joltsms_update_number and 7 more — is a fair guide to whether it matches your workflow. It is maintained by rchanllc; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Joltsms's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • With 10 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Joltsms.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
joltsms_list_numbersList active numbers with service labels, tags, and unread counts
joltsms_get_numberFull details for a single number
joltsms_update_numberSet service label, tags, or notes on a number
joltsms_provision_numberRent a new dedicated real-SIM US number ($50/mo)
joltsms_release_numberCancel/release a number at end of billing period
joltsms_list_messagesList recent SMS with parsed OTP codes
joltsms_mark_readMark single or bulk messages as read
joltsms_wait_for_smsPoll until an SMS arrives (key tool for OTP flows)
joltsms_get_latest_otpGet the most recent parsed verification code
joltsms_billing_statusCheck all subscriptions with billing health

How to install the Joltsms MCP server

{
  "mcpServers": {
    "joltsms": {
      "command": "npx",
      "args": ["-y", "@joltsms/mcp-server"],
      "env": {
        "JOLTSMS_API_KEY": "jolt_sk_your_key_here"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Node.js 18+ - A JoltSMS account with a payment method on file - Your first number must be ordered through the Dashboard to complete initial 3D Secure verification
VariableDescriptionRequired
JOLTSMS_API_KEYCredential the server authenticates with.Yes
JOLTSMS_API_URLEndpoint or connection string the server talks to.Yes

Example prompts to try

  • Use Joltsms to joltsms list numbers.
  • Use Joltsms to joltsms get number.
  • Use Joltsms to joltsms update number.

Frequently asked questions

It connects Joltsms to MCP-compatible AI assistants such as Claude and Cursor, exposing 10 tools (joltsms_list_numbers, joltsms_get_number, joltsms_update_number, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Joltsms directly.