Address Validator API vs Alchemy MCP Server

In-depth architectural comparison of the Address Validator API and Alchemy MCP Server 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.

Which MCP Server Should You Choose?

Choose Address Validator API 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).
• Primary tools included: address_validate, address.

Explore Address Validator API Details

Choose Alchemy MCP Server when:

• You need dedicated capabilities in the Finance & Fintech domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
• You have access to required keys: ALCHEMY_API_KEY, AGENT_WALLET_SERVER.
• Primary tools included: Token prices by symbol or contract address, Historical price queries with date and time-frame filters, Multichain token and NFT ownership lookups.

Feature & Specification Comparison

Specification	Address Validator API Finance & Fintech	Alchemy MCP Server alchemy Finance & Fintech
Summary	Parse, validate and normalize postal addresses. Detect country, verify format. x402.	Allow AI agents to interact with Alchemy's blockchain APIs.
Category & Scope	Finance & Fintech	Finance & Fintech

Tools & Capabilities Breakdown

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).

{
  "mcpServers": {
    "address-validator-api": {
      "url": "https://address-validator.api.klymax402.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "alchemy-alchemy-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@alchemy/mcp-server"
      ],
      "env": {
        "ALCHEMY_API_KEY": "YOUR_ALCHEMY_API_KEY_HERE",
        "AGENT_WALLET_SERVER": "YOUR_AGENT_WALLET_SERVER_HERE"
      }
    }
  }
}

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