X402 MCP Server

ai.maxwellinternational/datav0.2.0

Local providers worldwide, plus travel and public data. Free search; paid answers via x402.

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Active9d ago

Install X402 MCP server

claude mcp add ai-maxwellinternational-data -- npx -y @maxwellintl/x402-mcp

{
  "mcpServers": {
    "ai-maxwellinternational-data": {
      "command": "npx",
      "args": [
        "-y",
        "@maxwellintl/x402-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "ai-maxwellinternational-data": {
      "command": "npx",
      "args": [
        "-y",
        "@maxwellintl/x402-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "ai-maxwellinternational-data": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@maxwellintl/x402-mcp"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "ai-maxwellinternational-data": {
      "command": "npx",
      "args": [
        "-y",
        "@maxwellintl/x402-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
MAXWELL_WALLET_KEY_FILE	—	—	File with a Base (EVM) private key for paying; without a wallet, paid tools only quote
MAXWELL_SOLANA_KEY_FILE	—	—	File with a Solana secret key for paying in USDC on Solana
MAXWELL_MAX_PER_CALL_USD	—	—	Per-call cap; above it the user is asked (default 0.05)
MAXWELL_DAILY_BUDGET_USD	—	—	Daily spend cap in USD (default 2)

Remote endpoints

streamable-httphttps://api.maxwellinternational.ai/mcp

Freshness

Active — last maintenance signal 9d ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-01 · 9d ago · official registry · v0.2.0

FAQ

›How do I install the X402 MCP server in Claude Code?

Run: claude mcp add ai-maxwellinternational-data -- npx -y @maxwellintl/x402-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does X402 require an API key?

No required environment variables are declared in its published metadata.

›Can I use X402 as a remote (hosted) MCP server?

Yes — it offers both a hosted endpoint and a local stdio package.

›Is X402 in the official MCP registry?

Yes, as ai.maxwellinternational/data.