Critical-risk tools in EVM MCP Server
3 of the 25 tools in EVM MCP Server are classified as critical risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.
Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.
Tools at critical risk
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transfer_erc20FinancialTransfer ERC20 tokens to an address. Uses the configured wallet.
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transfer_nativeFinancialTransfer native tokens (ETH, MATIC, etc.) to an address. Uses the configured wallet.
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approve_token_spendingFinancialApprove a spender (contract) to spend tokens on your behalf. Required before interacting with DEXes, lending protocols, etc.
Attacks that target this class
Critical-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.