CRA AGENT MCP Server

io.github.giupy997/cra-agent

Repository Registry

What is the CRA AGENT MCP server?

Lets an agent pay for x402 APIs in USDC on Arc, under a spending policy it cannot change.

How to install CRA AGENT

Copy-paste configuration for popular MCP clients.

transport: stdio

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

Environment / auth

CRA_NETWORK
required
arc (mainnet) or arcTestnet
CRA_KEY_FILE
required
Path to a chmod 600 file holding the agent's private key. Never put the key in a prompt.
CRA_POLICY
Spending limits, e.g. daily=5,per_seller=0.5,per_payment=0.05
CRA_RPC_URL
Optional RPC endpoints, comma separated, in priority order
DATABASE_URL
Optional Postgres for the ledger; in memory without it

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

{
  "mcpServers": {
    "cra-agent": {
      "command": "npx",
      "args": [
        "-y",
        "@cra-agent/mcp"
      ],
      "env": {
        "CRA_NETWORK": "<YOUR_CRA_NETWORK>",
        "CRA_KEY_FILE": "<YOUR_CRA_KEY_FILE>",
        "CRA_POLICY": "<YOUR_CRA_POLICY>",
        "CRA_RPC_URL": "<YOUR_CRA_RPC_URL>",
        "DATABASE_URL": "<YOUR_DATABASE_URL>"
      }
    }
  }
}

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