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Nishvault x402 Pre-Send Guard

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0.01 USDC on Base for pre-send EVM transaction simulation for AI agents. Returns an x402 v2 challenge and, after payment, a preflight result and proof receipt; never broadcasts the transaction.

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Seller site: https://api.nishvault.com/elizaos-action · JSON · kit.json · buy here: /api/v1/call/x402.nishvault-x402-pre-send-guard
Data source: x402-list.com (CC BY 4.0)
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