chainlink-sentinel

Instructions

Implementation Reference

• src/mcp/server.ts:71-107 (handler)

  The "sentinel_chain" tool is registered and implemented as a handler in src/mcp/server.ts, using `readAllFeeds` and `detectAnomalies`.

  server.tool(
    "sentinel_chain",
    "Scan all Chainlink price feeds on a specific chain",
    {
      chain: z
        .enum(chains as [string, ...string[]])
        .describe("Chain to scan (ethereum, polygon, arbitrum, base, avalanche, bnb)"),
    },
    async ({ chain }) => {
      const feeds = await readAllFeeds(chain);
      if (feeds.length === 0) {
        return { content: [{ type: "text", text: `No feeds available for ${chain}` }] };
      }
      const anomalies = detectAnomalies(feeds);
      const lines = feeds.map(
        (f) =>
          `${f.pair.padEnd(10)} $${f.price.toFixed(4).padStart(12)} | staleness: ${Math.floor(f.staleness / 60)}m | round: ${f.roundId}`
      );
  
      return {
        content: [
          {
            type: "text",
            text: [
              `**${chain.toUpperCase()} — ${feeds.length} feeds**`,
              "```",
              ...lines,
              "```",
              anomalies.length > 0
                ? `\n**${anomalies.length} anomalies:** ${anomalies.map((a) => a.details).join("; ")}`
                : "\nNo anomalies.",
            ].join("\n"),
          },
        ],
      };
    }
  );