{"openapi":"3.1.0","info":{"title":"Guardian transaction intent preflight","version":"1.0.0","description":"Guardian performs bounded static checks of submitted Base transaction intent before signing. It does not simulate onchain execution or guarantee safety.","x-guidance":"POST transactionData describing a Base transaction to the Guardian gateway. An unsigned request returns a 1.99 USDC x402 challenge. Guardian makes static checks only."},"servers":[{"url":"https://tpnvisfsoateycjrkrie.supabase.co/functions/v1/guardian-x402-gateway"}],"paths":{"/":{"post":{"summary":"Request a paid static preflight check","x-payment-info":{"price":{"mode":"fixed","currency":"USD","amount":"1.99"},"protocols":[{"x402":{}}]},"description":"Unpaid POST returns x402 payment challenge. Every check costs 1.99 USDC on Base.","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","properties":{"transactionData":{"type":"object"},"requestedPrice":{"type":"string","enum":["1.99"]}},"required":["transactionData"]}}}},"responses":{"200":{"description":"Static transaction intent assessment"},"402":{"description":"x402 payment required"}}}}}}