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Virtual phone numbers for SMS verification, OTP receipt, and number management.
About
Virtual phone numbers for SMS verification, OTP receipt, and number management.
Remote endpoints: streamable-http: https://mcp.quackr.io/
Security Report
10.0
Low Risk10.0Low RiskValid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
Endpoint verified · Requires authentication · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-quackr-quackr": {
"url": "https://mcp.quackr.io/"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Quackr MCP Server
Official MCP server for Quackr — virtual phone numbers for SMS verification and OTP receipt. Use Claude (or any MCP-compatible client) to check pricing and inventory, purchase temporary numbers, and read incoming SMS programmatically.
Hosted endpoint: https://mcp.quackr.io/
Transport: Streamable HTTP
Auth: Authorization: Bearer YOUR_API_KEY header
Tools
| Tool | Description |
|---|---|
get-balance | Get the current account balance in USD |
get-pricing | Get phone number rental pricing for a specific country |
get-inventory | Check available phone number inventory for a country |
purchase-number | Purchase a temporary number for receiving SMS (deducts from balance) |
check-sms | Check SMS messages received on a rented number |
list-active-numbers | List all currently active (rented) numbers on the account |
Getting an API Key
- Sign in at quackr.io
- Open your profile page
- Copy the API key from the API section
Claude Code Setup
Add to your ~/.claude.json (or a project .mcp.json):
{
"mcpServers": {
"quackr": {
"type": "http",
"url": "https://mcp.quackr.io/",
"headers": {
"Authorization": "Bearer YOUR_API_KEY_HERE"
}
}
}
}
Or via the CLI:
claude mcp add --transport http quackr https://mcp.quackr.io/ --header "Authorization: Bearer YOUR_API_KEY_HERE"
Claude Desktop Setup
Claude Desktop's JSON config only supports local (stdio) servers, so add Quackr as a remote connector instead: Settings → Connectors → Add custom connector, enter https://mcp.quackr.io/, and add an Authorization header with the value Bearer YOUR_API_KEY.
Other MCP Clients
Any client supporting remote Streamable HTTP MCP servers with custom headers works. Point it at https://mcp.quackr.io/ and pass your key via the Authorization: Bearer YOUR_API_KEY header.
REST API
Quackr also exposes a full REST API at https://api.quackr.io/ — see api.quackr.io/swagger.json for the full spec. Same x-api-key auth.
Support
- Website: quackr.io
- Issues: file in this repo
- Email: support@quackr.io
License
MIT — see LICENSE.
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