Pre-sign safety check for agent wallets: tx, EIP-712, EIP-7702, x402. By Crypto Money Maker
Scored across 1 tool
With only one tool, there is zero possibility of misselection. check_signature has a single, clearly bounded purpose: decoding and risk-scoring signature requests before signing.
The single name check_signature follows a clean verb_noun convention in snake_case. There is no cross-tool inconsistency to evaluate.
One tool for an entire server is on the thin side, even though the tool itself does substantial work. A preview/full-check split or separate decode vs. risk operations could plausibly justify additional tools.
The tool covers a wide range of payload types (transactions, EIP-712, EIP-7702, x402) with a clear SAFE/CAUTION/DANGER output and paid enrichment. Minor gaps exist, such as no batch checking or standalone token/spender metadata lookup, but core lifecycle is covered.
Call BEFORE your agent signs or sends anything from a wallet. Decodes a transaction, an EIP-712 typed-data request (Permit, Permit2, EIP-3009 USDC authorizations, Seaport orders), an EIP-7702 delegation or an x402 payment (402 terms + payload) into plain English and returns SAFE / CAUTION / DANGER with risk flags (unlimited approvals, setApprovalForAll, fake USDC domains, x402 overpay or wrong payTo, OFAC SDN counterparties). Free preview tier (offline). The paid x402 endpoint /v1/check adds reasons, on-chain facts (spender is a wallet or contract, token metadata) and an eth_call simulation.
Inputs: tx, chain, typed_data, authorization, +2 more.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Add one secure layer between your agents and this server.