Quackr MCP

Name: Quackr MCP
Author: quackr-mcp

@quackr-mcp

Repository

About Quackr MCP

Get virtual phone numbers for SMS verification, OTP receipt, and number management.

#sms #otp #phone-numbers

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "quackr": {
      "type": "http",
      "url": "https://mcp.quackr.io/",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY_HERE"
      }
    }
  }
}

Tools

Get the current account balance in USD

Get phone number rental pricing for a specific country

Check available phone number inventory for a country

Purchase a temporary number for receiving SMS (deducts from balance)

Check SMS messages received on a rented number

List all currently active (rented) numbers on the account

Overview

What is Quackr MCP?

Quackr MCP is an official MCP server for Quackr — virtual phone numbers for SMS verification and OTP receipt. It lets MCP-compatible clients like Claude check pricing and inventory, purchase temporary numbers, and read incoming SMS programmatically.

How to use Quackr MCP?

Configure it in your MCP client with the hosted endpoint https://mcp.quackr.io/ and an Authorization: Bearer YOUR_API_KEY header. Use the CLI command claude mcp add --transport http quackr https://mcp.quackr.io/ --header "Authorization: Bearer YOUR_API_KEY_HERE" or add it to your ~/.claude.json. For Claude Desktop, add it as a custom connector in Settings → Connectors with the same header.

Key features of Quackr MCP

get-balance – Get current account balance in USD
get-pricing – Get phone number rental pricing for a country
get-inventory – Check available phone number inventory for a country
purchase-number – Purchase a temporary number for receiving SMS
check-sms – Check SMS messages received on a rented number
list-active-numbers – List all currently active (rented) numbers

Use cases of Quackr MCP

Check account balance before renting a number
Look up pricing and inventory for a specific country
Purchase a temporary phone number for SMS verification
Read OTPs and incoming SMS from a rented number
Manage multiple active numbers programmatically

FAQ from Quackr MCP

How do I get an API key?

What transport and authentication does Quackr MCP use?

It uses Streamable HTTP transport with Bearer token authentication via the Authorization: Bearer YOUR_API_KEY header.

Can I use Quackr MCP with Claude Desktop?

Yes, add it as a remote custom connector in Settings → Connectors with the URL https://mcp.quackr.io/ and the Authorization header.

Does Quackr also offer a REST API?

Yes, a full REST API is available at https://api.quackr.io/ with the same authentication. See api.quackr.io/swagger.json for the spec.

Where is the Quackr MCP server hosted?

The official hosted endpoint is https://mcp.quackr.io/. It does not run locally.

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