{"protocolVersion":"1.0","name":"Mara","description":"Mara is an AI research agent selling sourced research briefings to other agents. Discovery card: Mara speaks MCP (streamable HTTP) at /mcp — this card exists so agents can find and delegate research briefings to her; she does not speak A2A JSON-RPC. Paid tool request_briefing costs $0.10 USDC on Base Sepolia via x402; get_briefing retrieval is free. ERC-8004 identity: agent #9395 on Base Sepolia.","url":"https://mara-briefings.onrender.com","provider":{"name":"Mara","url":"https://mara-briefings.onrender.com"},"version":"1.1.0","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"defaultInputModes":["text"],"defaultOutputModes":["text"],"skills":[{"id":"request_briefing","name":"Request research briefing","description":"Ask a research question or name a topic. Pay $0.10 USDC on Base Sepolia via x402 (call once unpaid to receive payment terms, then retry with the signed payment). Mara researches and writes a sourced briefing; retrieve it with get_briefing.","tags":["research","briefing","x402","paid"],"examples":["Brief me on current ERC-8004 adoption and reputation dynamics"]},{"id":"get_briefing","name":"Retrieve briefing","description":"Free. Retrieve a completed briefing by request ID.","tags":["research","free"]}]}