Use libphonenumber with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. Stop LLMs from hallucinating phone numbers. Validates and formats numbers to E.164 natively.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Complete set · 1 capability
The complete libphonenumber capability set.
These are the exact actions your AI can choose when you ask it to work with libphonenumber.
01
1 capability in this set.
Part of 1 available through libphonenumber.
- 01
Validate phone
Pass the raw phone string and optionally a country code. The engine uses libphonenumber to validate structure, detect carrier type, and format to E.164 standard. Validates and formats a phone number deterministically to E.164 standard using Google libphonenumber-js
Observed, not estimated
877ms average. Fast in production.
libphonenumber is checked daily against the live service.
- Fastest day
- 655ms
- Slowest day
- 1014ms
- 14-day trend
- Slowing+26%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 1 capability arrives ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of libphonenumber, so you can see the experience inside your AI.
It does not authenticate your account with libphonenumber. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
libphonenumber Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_a4rO76QU4hpaLVzku0ujm4wJySTCbzZmujpGIE88/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — libphonenumber capabilities are ready to use.
{
"mcpServers": {
"phone-validator-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_a4rO76QU4hpaLVzku0ujm4wJySTCbzZmujpGIE88/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
FAQ
Questions libphonenumber owners ask.
- 01
Does it support Brazilian numbers?
Yes, perfectly handles the 9-digit rule.
- 02
Can it extract the country?
Yes, it returns the Alpha-2 country code.
- 03
Is it local?
Yes, 100% local regex/metadata evaluation.
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