High-risk tools in MetaMask MCP
5 of the 29 tools in MetaMask MCP are classified as high 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 high risk
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deploy-contractExecuteDeploy a contract to the network, given bytecode, and constructor arguments.
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callExecuteExecuting a new message call immediately without submitting a transaction to the network.
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sign-messageExecuteSign a message.
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switch-chainExecuteSwitch the target chain.
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write-contractExecuteExecute a write function on a contract.
Attacks that target this class
High-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.