{"protocol":"capi2.verifiable_commerce/1.0","brand":"CAPI2","promise":"Verifiable commerce for autonomous agents.","purpose":"Give autonomous buyers evidence of who authorized a purchase, what was ordered, what was delivered, how it was verified and how payment settled.","flow":["request","authority_check","policy_check","quote","payment","delivery","delivery_verification","commerce_receipt"],"products":[{"id":"agent_preflight","name":"Agent Preflight","stage":"before_payment","result":"allow, deny or require_human_review with reasons","available_now":true,"execute":"POST /v1/claim-verify","usage":"Verify buyer-supplied authority, policy or seller claims before signing payment."},{"id":"delivery_verify","name":"Delivery Verify","stage":"after_delivery","result":"supported, contradicted or uncertain with cited evidence","available_now":true,"execute":"POST /v1/claim-verify","usage":"Compare a precise delivery claim with buyer-supplied public evidence."},{"id":"commerce_receipt","name":"Commerce Receipt","stage":"after_verification_and_settlement","result":"portable machine-readable evidence envelope","available_now":true,"status":"canonical issuance and integrity verification available; Ed25519 signatures activate when a persistent signing seed is configured","issue":"POST /v1/commerce-receipts/issue","verify":"POST /v1/commerce-receipts/verify","signing_key":"GET /v1/commerce-receipts/signing-key","fields":["receipt_id","request_id","buyer_agent","seller","authority","policy_decision","price","asset","network","request_sha256","delivery_sha256","verification","settlement","issued_at"]}],"current_paid_engine":{"method":"POST","url":"https://capi2-agent-commerce.vercel.app/v1/claim-verify","price":"$0.01","payment_protocol":"x402","network":"eip155:8453","asset":"USDC"},"principles":["Payment proves settlement, not delivery quality.","Every verdict identifies its evidence and limitations.","High-impact or regulated actions require an authorized human review path.","Receipts must be portable across wallets, agent frameworks and payment rails."]}