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What it does

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

Description as published by the publisher in the official MCP Registry, read 10 Oct 2026. Not written or verified by Few Servers.

Facts

Registry name	`io.quackr/quackr`
Publisher	quackr.io Namespace verified by the registry through the publisher's domain.
Category	Communication and email sorted by our keyword rules
Transport	remote (streamable-http), local package (npm)
Version	1.0.3
This version published	18 Jun 2026
Last seen	10 Oct 2026, in our crawl of the official MCP Registry
Tested by Few Servers	No

Remote endpoint (streamable-http), as published: https://mcp.quackr.io/
npm package, as published: quackr-mcp · version 1.0.1 · transport stdio
```
npx -y quackr-mcp
```
Standard run command for npm packages. The registry publishes the package name, not a command; check the repository for required arguments.

Install details read from the registry record on 12 Oct 2026. We have not run this server.

Needs a key or token: the registry record marks a secret value as required. Declared by the publisher:

Authorization (header, secret, required): Bearer token in the form 'Bearer <your Quackr API key>', from your profile page at quackr.io
QUACKR_API_KEY (environment variable, secret, required): Your Quackr API key, from your profile page at quackr.io

Being listed is not a safety check. Read the repository and check what a server asks for before you connect it. How the directory works.

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