chainlink-sentinel

Instructions

Implementation Reference

• src/mcp/server.ts:31-68 (handler)

  The handler for "sentinel_scan" tool. It calls `crossChainScan` and `detectAnomalies` to aggregate data and format it into a text response for the MCP client.

  server.tool(
    "sentinel_scan",
    "Run a full cross-chain Chainlink oracle scan across 6+ EVM chains. Returns all feed prices, staleness, and detected anomalies.",
    {},
    async () => {
      const feeds = await crossChainScan();
      const anomalies = detectAnomalies(feeds);
  
      const feedLines = feeds.map(
        (f) =>
          `${f.chain.padEnd(10)} ${f.pair.padEnd(10)} $${f.price.toFixed(4).padStart(12)} updated ${Math.floor(f.staleness / 60)}m ago`
      );
  
      const anomalyLines =
        anomalies.length > 0
          ? anomalies.map((a) => `[${a.severity.toUpperCase()}] ${a.type}: ${a.details}`)
          : ["No anomalies detected."];
  
      return {
        content: [
          {
            type: "text",
            text: [
              `**Chainlink Sentinel — Cross-Chain Scan**`,
              `Feeds: ${feeds.length} | Chains: ${[...new Set(feeds.map((f) => f.chain))].length} | Anomalies: ${anomalies.length}`,
              "",
              "```",
              ...feedLines,
              "```",
              "",
              "**Anomalies:**",
              ...anomalyLines,
            ].join("\n"),
          },
        ],
      };
    }
  );