check_agent_purchase

com.davisvillelabs/exitproof · Verify this server

Inspect one autonomous HTTP purchase before the calling agent pays it. This $0.01 machine-payment operation validates a real 402 challenge, compares advertised price/protocol/network/asset/payment destination when supplied, checks x402 v2 exact resource binding when available, and surfaces retry or settled-delivery recovery signals. ExitProof never forwards payment credentials and never sends a live POST, PUT, PATCH, or DELETE probe; for those methods the caller supplies an already-observed 402 challenge. Conflicting, malformed, inaccessible, non-402, or unsafe targets are rejected before ExitProof issues its own payment challenge. Use check_reversibility instead for cancellation/refund terms on a real-world commitment, create_exit_manifest to preserve an eligible exit path, and build_exit_pack when an exit is actually needed. A successful check is not a recommendation, merchant-identity guarantee, delivery guarantee, legal opinion, or authorization to spend.