Agent402.Tools: pay-per-call web tools MCP Server

io.github.MikeyPetrillo/agent402

Repository Registry

What is the Agent402.Tools: pay-per-call web tools MCP server?

Agentic Finance: 500+ agent tools, multi-chain USDC over x402 or MPP, free via PoW or card credits

How to install Agent402.Tools: pay-per-call web tools

Copy-paste configuration for popular MCP clients.

transport: stdio

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

Environment / auth

AGENT_KEY
secret
Hex private key of an EVM wallet funded with USDC on any EVM rail the server offers (Base, Polygon, Arbitrum, Monad, Celo, Avalanche, Sei, Optimism) or USDG on Robinhood Chain; use SOLANA_AGENT_KEY for Solana. Stellar and Algorand are not signed by this package. Unset = proof-of-work mode (free pure-CPU tools).
AGENT402_BUDGET
Optional hard cap on total USDC spent per session (e.g. 1.00). Refused before any payment is signed.
AGENT402_MAX_PER_CALL
Optional max USD price for any single call (e.g. 0.01).
AGENT402_CREDITS_KEY
secret
Prepaid card-credits key (a402_...) from https://agent402.tools/credits. With it set and no wallet key, every tool pays by card; the list price is debited only on a successful call.
SOLANA_AGENT_KEY
secret
Optional base58 (or JSON byte-array) secret key of a Solana wallet funded with USDC on Solana.
AGENT402_NETWORKS
Optional: restrict and order the chains to pay on (e.g. "base,solana" or a CAIP-2 like eip155:4663).

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

{
  "mcpServers": {
    "agent402": {
      "command": "npx",
      "args": [
        "-y",
        "agent402-mcp"
      ],
      "env": {
        "AGENT_KEY": "<YOUR_AGENT_KEY>",
        "AGENT402_BUDGET": "<YOUR_AGENT402_BUDGET>",
        "AGENT402_MAX_PER_CALL": "<YOUR_AGENT402_MAX_PER_CALL>",
        "AGENT402_CREDITS_KEY": "<YOUR_AGENT402_CREDITS_KEY>",
        "SOLANA_AGENT_KEY": "<YOUR_SOLANA_AGENT_KEY>",
        "AGENT402_NETWORKS": "<YOUR_AGENT402_NETWORKS>"
      }
    }
  }
}

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