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Connect Phone Validator Engine to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Turn messy phone strings into valid E.164 numbers.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 1 capability

We ship only the actions that matter.

Capability set01 / 01

01

1 capability in this set.

Part of 1 available through libphonenumber.

  1. 01

    Validate phone

    This capability validates and formats phone numbers using libphonenumber-js. It takes a raw string and an optional country code to return a clean E.164 formatted number and carrier details.

Real work

What teams actually run

01

SMS Automation

Clean user-provided numbers before sending them to Twilio or Zenvia.

02

CRM Data Cleaning

Standardize contact lists by converting various phone formats into a single standard.

03

Customer Support Bots

Ensure the agent captures a valid phone number during a chat session.

04

User Registration

Validate phone numbers at the point of entry to prevent fake or invalid signups.

Automate a task

Put libphonenumber to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

libphonenumber works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put libphonenumber to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

970ms average. Fast in production.

libphonenumber is checked daily against the live service.

Daily averagePeak 1200ms
Oct 13Today
Fastest day
750ms
Slowest day
1200ms
14-day trend
Slowing+31%

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.

Connector linkhttps://edge.vinkius.com/vk_preview_a4rO76QU4hpaLVzku0ujm4wJySTCbzZmujpGIE88/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — libphonenumber capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "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

Guided setup for Claude? Set up libphonenumber in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work libphonenumber owners hand off.

Developers and automation engineers building communication workflows that rely on accurate user data.

  • 01

    Backend Developers

    They hand off raw user input to the AI to be cleaned before database entry.

  • 02

    Automation Engineers

    They use the MCP to ensure SMS or voice workflows don't fail due to bad formatting.

  • 03

    AI Agents Builders

    They integrate this into agentic workflows to prevent LLM hallucinations in telecom tasks.

FAQ

Questions libphonenumber owners ask.

  • 01

    What format does this MCP output?

    It outputs numbers in the strict E.164 standard, which is the global standard for telecommunications.

  • 02

    How does this prevent LLM hallucinations?

    Instead of the LLM guessing how a number should look, it uses a deterministic library to calculate the correct format.

  • 03

    Which libraries does this use?

    This MCP uses Google's libphonenumber-js to perform all validation and formatting.

  • 04

    Can I validate numbers for specific countries?

    Yes, you can pass an optional country code to the capability to ensure the number is validated against specific regional rules.

  • 05

    Does this work with Twilio?

    Yes, it is designed to prepare numbers so they are ready to be sent to services like Twilio or Zenvia without errors.

  • 06

    Does it support Brazilian numbers?

    Yes, perfectly handles the 9-digit rule.

  • 07

    Can it extract the country?

    Yes, it returns the Alpha-2 country code.

  • 08

    Is it local?

    Yes, 100% local regex/metadata evaluation.

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