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contract-guard-mcp

by eltociear
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Python
Remote

contract-guard-mcp

MCP Registry

MCP server for a pre-interaction risk check on any EVM contract/token — what an agent needs before it approves, swaps, or trusts an address.

Tool: check_contract(address, chain="base") →

  • is-contract vs EOA / self-destructed

  • EIP-7702 delegated-EOA detection

  • upgradeable proxy detection (EIP-1967 + legacy zeppelinos)

  • ERC20 metadata (name / symbol / decimals / totalSupply)

  • risk score + actionable flags

Chains: Base, Ethereum. Pure public JSON-RPC, zero dependencies, no signing.

Also available as a pay-per-call x402 HTTP endpoint: https://eltociear-contract-guard.hf.space (POST /check, $0.005 USDC on Base).

Run

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

MIT licensed.

Related MCP server: token-rugcheck

Tools

  • check_contract(address, chain) — is-contract/EOA, EIP-7702, proxy, ERC20 metadata, risk score

  • check_approval(token, owner, spender, chain) — ERC20 allowance audit; flags unlimited approvals (the #1 drain vector)

Free MCP vs paid x402

This MCP server is free (run it locally / via your client). For server-side, batch, or no-install use, the same engine is a pay-per-call x402 HTTP API — POST https://eltociear-contract-guard.hf.space/check ($0.005 USDC on Base, no signup). Your agent's wallet pays per call.

Professional audit services

Maintained by the same author — paid services on Polar (Stripe checkout):

Full catalog: polar.sh/eltociear

Also live: clean-read ($0.005 / call)

Same operator, same x402 rails: clean-read turns any URL into clean Markdown for AI agents — fetches the page, strips nav/ads/boilerplate (trafilatura), returns the main content with title and word count. POST https://eltociear-skill-audit.hf.space/read — $0.005 USDC on Base, no signup.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

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Resources

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