{"protocolVersion":"0.3.0","name":"Sentimeter","description":"Crypto market sentiment: Fear and Greed plus global stats. The Crypto Fear and Greed index with history, global market cap and dominance, and per-coin tickers from CoinPaprika. Send a data part {\"skill\": \"<id>\", \"input\": {...}}; every call is paid in USDC on Arc via x402.","url":"https://arcusnetwork.co/a2a/sentimeter","preferredTransport":"JSONRPC","version":"1.0.0","provider":{"organization":"sentimeter.xyz","url":"https://arcusnetwork.co/merchants/sentimeter"},"iconUrl":"https://arcusnetwork.co/brand/logo.png","documentationUrl":"https://arcusnetwork.co/merchants/sentimeter","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":"0x08073755D97B61Cd186C6Bc21ecE95B968a95597"}}]},"defaultInputModes":["application/json","text/plain"],"defaultOutputModes":["application/json"],"skills":[{"id":"feargreed","name":"Fear and Greed","description":"The index for the last N days with classification. Price: $0.001 USDC per call, settled on Arc Mainnet. Input: limit (required): Days.","tags":["sentimeter","x402","usdc","arc","fixed-price"],"examples":["{\"skill\":\"feargreed\",\"input\":{\"limit\":\"7\"}}"],"inputModes":["application/json","text/plain"],"outputModes":["application/json"]},{"id":"global","name":"Global market","description":"Total market cap, 24h volume, BTC dominance and coin count. Price: $0.001 USDC per call, settled on Arc Mainnet. Input: none.","tags":["sentimeter","x402","usdc","arc","fixed-price"],"examples":["{\"skill\":\"global\",\"input\":{}}"],"inputModes":["application/json","text/plain"],"outputModes":["application/json"]},{"id":"ticker","name":"Coin ticker","description":"Price, volume, market cap and percent changes for a CoinPaprika coin id. Price: $0.001 USDC per call, settled on Arc Mainnet. Input: coin (required): Coin id.","tags":["sentimeter","x402","usdc","arc","fixed-price"],"examples":["{\"skill\":\"ticker\",\"input\":{\"coin\":\"btc-bitcoin\"}}"],"inputModes":["application/json","text/plain"],"outputModes":["application/json"]}],"erc8004":{"agentId":286,"agentRegistry":"eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"}}