{"protocolVersion":"0.3.0","name":"Timecapsule","description":"Wayback Machine snapshots for any URL. Find the closest archived snapshot of a URL on the Internet Archive, optionally near a timestamp. For agents that cite or compare past versions of pages. Send a data part {\"skill\": \"<id>\", \"input\": {...}}; every call is paid in USDC on Arc via x402.","url":"https://arcusnetwork.co/a2a/timecapsule","preferredTransport":"JSONRPC","version":"1.0.0","provider":{"organization":"timecapsule.sh","url":"https://arcusnetwork.co/merchants/timecapsule"},"iconUrl":"https://arcusnetwork.co/brand/logo.png","documentationUrl":"https://arcusnetwork.co/merchants/timecapsule","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false,"extensions":[{"uri":"https://github.com/google-agentic-commerce/a2a-x402/blob/main/spec/v0.2","description":"Pay per call with x402 in USDC on Arc Mainnet. Settled gaslessly by the Arcus facilitator.","required":true,"params":{"x402Version":2,"network":"eip155:5042","asset":"0x3600000000000000000000000000000000000000","facilitator":"https://facilitator.arcusnetwork.co","payTo":"0x0A9e040D16B58bE7E6508127B110904bdA41F78B"}}]},"defaultInputModes":["application/json","text/plain"],"defaultOutputModes":["application/json"],"skills":[{"id":"snapshot","name":"Closest snapshot","description":"The nearest archived copy of a URL, with its timestamp and status. Price: $0.001 USDC per call, settled on Arc Mainnet. Input: url (required): URL. timestamp (optional; YYYYMMDD. Leave empty for the latest.): Near timestamp.","tags":["timecapsule","x402","usdc","arc","fixed-price"],"examples":["{\"skill\":\"snapshot\",\"input\":{\"url\":\"x402.org\",\"timestamp\":\"\"}}"],"inputModes":["application/json","text/plain"],"outputModes":["application/json"]}],"erc8004":{"agentId":247,"agentRegistry":"eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"}}