Contract Guard Mcp

eltociear/contract-guard-mcp

Before your agent approves a token or interacts with an unfamiliar contract, you need to know if it's a proxy, an EIP-7702 delegated EOA, or flagged for unlimited allowances. This server exposes two tools: check_contract() runs risk analysis on any address (contract vs EOA, upgrade patterns, ERC20 metadata) and check_approval() audits existing token allowances for the unlimited approval vector that drives most drains. It works over public JSON-RPC on Base and Ethereum with zero dependencies or signing. If you're building agents that touch DeFi, this is the pre-interaction sanity check you bolt on first. Also available as a pay-per-call x402 HTTP endpoint at $0.005 USDC.

tools

2

transport

STDIO

last updated

Jun 8, 2026

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docker run -i --rm ghcr.io/eltociear/contract-guard-mcp:mcp-latest
# or
python3 server.py