402-LAB MCP Server

io.github.Kairose-master/402-lab

Repository Registry

What is the 402-LAB MCP server?

Budget-capped x402 buyer: delegate USDC in plain words, agent discovers and pays per call.

How to install 402-LAB

Copy-paste configuration for popular MCP clients.

transport: stdio

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

Environment / auth

BUYER_PRIVATE_KEY
required
secret
0x-prefixed private key of the paying wallet (keep only small amounts)
NETWORK
eip155:84532 (Base Sepolia, default) or eip155:8453 (Base mainnet)
MANDATE_MAX_USDC
Absolute cap any mandate may reach
CATALOG_URLS
Comma-separated seller product.json URLs searched besides the x402 Bazaar

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

{
  "mcpServers": {
    "402-lab": {
      "command": "https://github.com/Kairose-master/handsel-mandate/releases/download/mcp-v0.1.0/402-lab.mcpb",
      "args": [],
      "env": {
        "BUYER_PRIVATE_KEY": "<YOUR_BUYER_PRIVATE_KEY>",
        "NETWORK": "<YOUR_NETWORK>",
        "MANDATE_MAX_USDC": "<YOUR_MANDATE_MAX_USDC>",
        "CATALOG_URLS": "<YOUR_CATALOG_URLS>"
      }
    }
  }
}

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