What is the key difference between Phone Number Validation API and Plugin?

Phone Number Validation API belongs to the Finance & Fintech category with local stdio execution, while Plugin belongs to the Finance & Fintech category with cloud HTTP/SSE execution.

How do I install Phone Number Validation API or Plugin in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Phone Number Validation API and Plugin free or paid?

Phone Number Validation API operates under a Free / Open Source model (No auth required). Plugin operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Phone Number Validation API lists 0 tools with 0 views and 0 GitHub stars. Plugin lists 0 tools with 0 views and 0 GitHub stars.

Can I use both Phone Number Validation API and Plugin together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Phone Number Validation API or Plugin in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Phone Number Validation API and Plugin free to use, or do they require API keys?

Phone Number Validation API is listed under a Free / Open Source model with No auth required . Plugin operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Phone Number Validation API and Plugin at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both phone-number-validation-api and plugin as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Phone Number Validation API has a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. Plugin holds a Quality Score of 45 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Phone Number Validation API vs Plugin

In-depth architectural comparison of the Phone Number Validation API and Plugin MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Phone Number Validation API

Finance & Fintech · Local stdio

Quality: 27/100 (Emerging) | Auth: No auth required

Plugin

Finance & Fintech · Remote HTTP/SSE

Quality: 45/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Phone Number Validation API if you need specialized Finance & Fintech tools running via a local process. Choose Plugin if your workspace requires Finance & Fintech integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Phone Number Validation API when:

You need dedicated capabilities in the Finance & Fintech domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Phone Number Validation API Details

Choose Plugin when:

You need dedicated capabilities in the Finance & Fintech domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Plugin Details

Feature & Specification Comparison

Specification	P Phone Number Validation API Finance & Fintech	Plugin Finance & Fintech
Summary	Validate phone numbers worldwide: carrier, line type, country, E.164. x402.	Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.
Category & Scope	Finance & Fintech	Finance & Fintech
Quality signal

Tools & Capabilities Breakdown

Phone Number Validation API Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Plugin Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Phone Number Validation API Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "phone-number-validation-api": {
      "command": "npx",
      "args": [
        "-y",
        "phone-number-validation-api"
      ]
    }
  }
}

Plugin Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "plugin": {
      "url": "http://127.0.0.1:8787"
    }
  }
}

Frequently Asked Questions

Phone Number Validation API is categorized under Finance & Fintech and uses a local stdio subprocess. In contrast, Plugin belongs to Finance & Fintech using remote streaming HTTP/SSE transport. Select Phone Number Validation API when you need capabilities focused on finance & fintech and Plugin when you require tools for finance & fintech.

More alternatives to Phone Number Validation API More alternatives to Plugin Finance & Fintech category hub