Pay-per-call x402 security tools for tool-call preflight, prompt-injection detection, response sanitization and schema-drift detection.
All paid calls use x402 V2 and settle as USDC on Solana mainnet. Unpaid calls return HTTP 402 with machine-readable payment requirements.
POST /v1/tool-call-dry-runPOST /v1/tool-response-shieldPOST /v1/schema-drift-guard