MCP Server

crosscheck MCP Server

com.crosscheckapi/crosscheck

Repository Registry

What is the crosscheck MCP server?

Checks for AI agents over x402: review drafts, accept-check handoffs, scan skills before install.

How to install crosscheck

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

CROSSCHECK_WALLET_KEY
secret
Private key of a dedicated EVM wallet with a few dollars of USDC on Base (or test USDC on Base Sepolia). Pays for checks.
CROSSCHECK_MAX_USD
Refuse to pay more than this per check. Default 0.10.
CROSSCHECK_NETWORKS
Networks to pay on, in order of preference. Default eip155:8453,eip155:84532. Set eip155:84532 for test USDC only.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "crosscheck": {
      "command": "npx",
      "args": [
        "-y",
        "crosscheckapi"
      ],
      "env": {
        "CROSSCHECK_WALLET_KEY": "<YOUR_CROSSCHECK_WALLET_KEY>",
        "CROSSCHECK_MAX_USD": "<YOUR_CROSSCHECK_MAX_USD>",
        "CROSSCHECK_NETWORKS": "<YOUR_CROSSCHECK_NETWORKS>"
      }
    }
  }
}

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