{"name":"Agent Purchase Guard — A2A paper access test","description":"Deterministic paper-only purchase preflight. Send one JSON purchase intent as an A2A text part. No payment, wallet, signature, credential or live commerce.","version":"a2a-shadow-1.0","documentationUrl":"https://merchant-scout-purchase-guard-a2a.malcolmscott73.workers.dev/capabilities","supportedInterfaces":[{"url":"https://merchant-scout-purchase-guard-a2a.malcolmscott73.workers.dev/","protocolBinding":"JSONRPC","protocolVersion":"1.0"}],"capabilities":{"streaming":false,"pushNotifications":false},"defaultInputModes":["text/plain","application/json"],"defaultOutputModes":["text/plain"],"skills":[{"id":"paper_purchase_preflight","name":"Paper purchase preflight","description":"Submit a JSON object as the entire message text. Required: agent_id, session_id, payment_id, scheme=exact, network=mock or eip155:84532, asset=PAPER_USDC or TEST_USDC, amount_usd, max_amount_usd, pay_to, resource_url, method and operation_id. Include your public HTTPS agent_card_url for separate operator review. price_accepted and accepted_price_usd are non-binding signals. Never send secrets or payment material.","tags":["paper-commerce","purchase-safety","preflight"],"examples":["{\"agent_id\":\"example-agent\",\"session_id\":\"example-session\",\"agent_card_url\":\"https://agent.example/.well-known/agent-card.json\",\"payment_id\":\"paper-example-0001\",\"scheme\":\"exact\",\"network\":\"mock\",\"asset\":\"PAPER_USDC\",\"amount_usd\":0.03,\"max_amount_usd\":0.05,\"pay_to\":\"paper:example\",\"resource_url\":\"https://service.example/data\",\"method\":\"POST\",\"operation_id\":\"example-data\",\"price_accepted\":false,\"accepted_price_usd\":0}"],"inputModes":["text/plain","application/json"],"outputModes":["text/plain"]}]}