Spraay X402 MCP Server

by plagtechio.github.plagtech/spraay-x402-mcpv3.1.1

Onchain data, AI models and batch USDC payments on Base via x402: swap quotes, token prices, wallet balances, ENS resolution and multi-recipient transfers.

4Node.jsstdioofficial registry

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security

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freshness

Slowing3mo ago

Install Spraay X402 MCP server

claude mcp add spraay-x402 -e X402_WALLET_PRIVATE_KEY='<x402-wallet-private-key>' -- npx -y spraay-x402-mcp

{
  "mcpServers": {
    "spraay-x402": {
      "command": "npx",
      "args": [
        "-y",
        "spraay-x402-mcp"
      ],
      "env": {
        "X402_WALLET_PRIVATE_KEY": "<x402-wallet-private-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "spraay-x402": {
      "command": "npx",
      "args": [
        "-y",
        "spraay-x402-mcp"
      ],
      "env": {
        "X402_WALLET_PRIVATE_KEY": "<x402-wallet-private-key>"
      }
    }
  }
}

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

{
  "servers": {
    "spraay-x402": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "spraay-x402-mcp"
      ],
      "env": {
        "X402_WALLET_PRIVATE_KEY": "<x402-wallet-private-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "spraay-x402": {
      "command": "npx",
      "args": [
        "-y",
        "spraay-x402-mcp"
      ],
      "env": {
        "X402_WALLET_PRIVATE_KEY": "<x402-wallet-private-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
X402_WALLET_PRIVATE_KEY	yes	yes	Private key for the wallet that pays for x402 requests (USDC on Base)

Freshness

Slowing — last maintenance signal 3mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-07-01 · 3mo ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-03-09 · 7mo ago · official registry · v3.1.1

FAQ

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

Run: claude mcp add spraay-x402 -e X402_WALLET_PRIVATE_KEY='<x402-wallet-private-key>' -- npx -y spraay-x402-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Spraay X402 require an API key?

Yes. It expects X402_WALLET_PRIVATE_KEY, of which 1 is a secret.

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

No hosted endpoint is published; it runs locally over stdio.

›Is Spraay X402 in the official MCP registry?

Yes, as io.github.plagtech/spraay-x402-mcp.