Anchor X402 MCP Server

by hypeprinter007-stackio.github.hypeprinter007-stack/anchor-x402v0.3.2

x402 pay-per-call wallet tools on Base and Solana: OFAC screening, wallet intel, hash anchoring, signed attestations, tx decoding and ENS/SNS resolution.

1Node.jsstdioremoteofficial registry

context tax

queued

security

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cold start

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freshness

Maintained36d ago

Install Anchor X402 MCP server

claude mcp add anchor-x402 -e ANCHOR_WALLET_PRIVATE_KEY='<anchor-wallet-private-key>' -- npx -y anchor-x402-mcp

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

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

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

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

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

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

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

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

Configuration

Variable	Required	Secret	Description
ANCHOR_WALLET_PRIVATE_KEY	yes	yes	EVM private key (0x-prefixed hex). The wallet pays for x402 calls in USDC on Base mainnet. Fund with USDC before use.

Remote endpoints

streamable-httphttps://api.anchor-x402.com/mcp

Freshness

Maintained — last maintenance signal 36d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-04 · 36d ago · GitHub
Latest release
2026-06-24 · 4mo ago · GitHub · v0.2.1
Package published
no data · npm/PyPI
Registry entry updated
2026-08-14 · 57d ago · official registry · v0.3.2

FAQ

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

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

›Does Anchor X402 require an API key?

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

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

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

›Is Anchor X402 in the official MCP registry?

Yes, as io.github.hypeprinter007-stack/anchor-x402.