Agent MCP Server

by xenarch-aiio.github.xenarch-ai/xenarch-mcpv1.3.1

Xenarch — x402 MCP server for AI agent payments. Non-custodial, USDC on Base L2.

1Node.jsstdioremoteofficial registry

context tax

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security

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cold start

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freshness

Maintained2mo ago

Install Agent MCP server

claude mcp add agent-xenarch-ai -e XENARCH_PRIVATE_KEY='<xenarch-private-key>' -- npx -y @xenarch/agent-mcp

{
  "mcpServers": {
    "agent-xenarch-ai": {
      "command": "npx",
      "args": [
        "-y",
        "@xenarch/agent-mcp"
      ],
      "env": {
        "XENARCH_PRIVATE_KEY": "<xenarch-private-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "agent-xenarch-ai": {
      "command": "npx",
      "args": [
        "-y",
        "@xenarch/agent-mcp"
      ],
      "env": {
        "XENARCH_PRIVATE_KEY": "<xenarch-private-key>"
      }
    }
  }
}

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

{
  "servers": {
    "agent-xenarch-ai": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@xenarch/agent-mcp"
      ],
      "env": {
        "XENARCH_PRIVATE_KEY": "<xenarch-private-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "agent-xenarch-ai": {
      "command": "npx",
      "args": [
        "-y",
        "@xenarch/agent-mcp"
      ],
      "env": {
        "XENARCH_PRIVATE_KEY": "<xenarch-private-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
XENARCH_PRIVATE_KEY	—	yes	Wallet private key (hex, 0x-prefixed). Auto-generates on first run if omitted.
XENARCH_RPC_URL	—	—	Base RPC endpoint URL
XENARCH_NETWORK	—	—	Network for payments (base or base-sepolia)
XENARCH_MAX_PAYMENT_USD	—	—	Local per-call payment cap in USDC (default 1.00). The only spending ceiling in standalone mode; set 0 to disable. Connect XENARCH_API_TOKEN for managed per-tx/daily/monthly caps.
PORT	—	—	Port for HTTP server (default: 3000)
TRANSPORT	yes	—	Set to 'http' to enable HTTP transport

Freshness

Maintained — last maintenance signal 2mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-08-01 · 2mo ago · GitHub
Latest release
2026-07-08 · 3mo ago · GitHub · v1.3.1
Package published
no data · npm/PyPI
Registry entry updated
2026-07-08 · 3mo ago · official registry · v1.3.1

FAQ

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

Run: claude mcp add agent-xenarch-ai -e XENARCH_PRIVATE_KEY='<xenarch-private-key>' -- npx -y @xenarch/agent-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Agent require an API key?

Yes. It expects TRANSPORT, XENARCH_PRIVATE_KEY, of which 1 is a secret.

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

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

›Is Agent in the official MCP registry?

Yes, as io.github.xenarch-ai/xenarch-mcp.