get-balanceLABSCO SUMMARY
The verification step stops being the thing a human has to do.
Any flow that ends in entering a code from a text message breaks automation. Renting the number, watching it and reading the code back are three calls here, with pricing and inventory checked first so the country you need is confirmed before money moves.
What it is
The official MCP server for Quackr, a virtual phone number service for SMS verification and OTP receipt. Numbers are rented against an account balance, and the messages that land on them are read back programmatically.
What you get
- The current account balance in USD
- Rental pricing and available inventory for a country, before you commit
- A temporary number purchased for receiving SMS, deducted from the balance
- The SMS received on a rented number
- Every currently active number on the account
Requirements
A Quackr API key from your profile page at quackr.io. The hosted endpoint is https://mcp.quackr.io/ over Streamable HTTP with an Authorization: Bearer header; the npm launcher needs Node.js 18+ and takes QUACKR_API_KEY.
Setup effort
One command plus a key — npx -y quackr-mcp, then supply credentials
USE CASES
01
Getting through an SMS verification
Buy a number in the country the service expects, then read the code off it when it arrives.
02
Checking the cost before you commit
Read the pricing for the country and your current balance, so a rental does not fail halfway.
03
Finding a number you already have
List the active rentals rather than buying another one for the same purpose.
04
Testing your own SMS flow
Rent a number, send to it from your application, and read exactly what arrived.
6 tools
Listed in project docs. Your client may show a different list.
get-pricingget-inventorypurchase-numbercheck-smslist-active-numbersBEFORE YOU INSTALL
What to know first
Tools you get
6 tools named in the project's documentation.
Requires
- npx on PATH
- Node.js 18+
- QUACKR_API_KEY in your environment
Where it runs
Of the 2 documented clients, 1 runs the server on your machine and 1 connects to a hosted endpoint.
INSTALLATION
Connect your client
Server setup
npx
TERMINAL
npx -y quackr-mcpHosted endpoint
ENDPOINT URL
https://mcp.quackr.io/Add this hosted endpoint to your MCP client using the credentials listed under Requirements.
MCP Clients
Claude Code
CLAUDE CODE · JSON
{
"mcpServers": {
"quackr": {
"type": "http",
"url": "https://mcp.quackr.io/",
"headers": {
"Authorization": "Bearer <YOUR_QUACKR_API_KEY>"
}
}
}
}Claude Desktop
CLAUDE DESKTOP · JSON
{
"mcpServers": {
"quackr": {
"command": "npx",
"args": [
"-y",
"quackr-mcp"
],
"env": {
"QUACKR_API_KEY": "<YOUR_QUACKR_API_KEY>"
}
}
}
}
