Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "name": "On-Chain Activity Index",
  "description": "Computes a 0-100 quantitative DeFi Protocol Activity Index from real DefiLlama data (TVL trend, fee/volume activity trend, diversification, scale). Pure descriptive metric, not a trading signal or financial advice.",
  "url": "https://onchain-activity-index-325572559480.us-central1.run.app",
  "version": "1.0.0",
  "documentationUrl": "https://onchain-activity-index-325572559480.us-central1.run.app/docs",
  "provider": {
    "organization": "nexus-mcp-infra",
    "url": "https://github.com/nexus-mcp-infra"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "additionalInterfaces": [
    {
      "url": "https://onchain-activity-index-325572559480.us-central1.run.app/mcp",
      "transport": "MCP"
    }
  ],
  "skills": [
    {
      "id": "nexus_onchain_activity_index_get_onchain_activity_index",
      "name": "Get On-Chain Activity Index",
      "description": "Compute a 0-100 quantitative DeFi protocol activity index from real TVL/fee/volume/diversification data. Not financial advice.",
      "tags": [
        "defi",
        "on-chain",
        "analytics",
        "activity-index"
      ]
    }
  ],
  "metadata": {
    "protocol_note": "This service implements the Model Context Protocol (MCP) at /mcp, not A2A's own task methods. POST /activity-index is charged $0.30 via x402 (Base Sepolia TESTNET, not real funds). Payment settles BEFORE computation runs, at the ASGI middleware layer ahead of request validation: a call is charged even if it returns a 404 (unknown protocol_slug) or 422 (no usable data). The MCP tool is currently free -- see README. IMPORTANT: the activity_index returned is a pure descriptive metric of on-chain activity level, NOT a trading signal, price prediction, or recommendation to buy/sell/hold any asset -- it must not be represented as investment advice downstream."
  }
}