prometheus-mcp

Instructions

Implementation Reference

• src/server/tools.ts:186-187 (handler)

  Handler function that executes the prometheus_query_range tool by calling the PrometheusClient's queryRange method with the provided query, start, end, and step parameters.

  handle: async (client: PrometheusClient, args) =>
    client.queryRange(args.query, args.start, args.end, args.step),

• src/server/tools.ts:57-62 (schema)

  Zod input schema defining parameters for the prometheus_query_range tool: query (string), start (string), end (string), step (string).

  const PrometheusQueryRangeSchema = z.object({
    query: z.string().describe("prometheus query expression"),
    start: z.string().describe("start timestamp (RFC3339 or unix timestamp)"),
    end: z.string().describe("end timestamp (RFC3339 or unix timestamp)"),
    step: z.string().describe("query resolution step width"),
  });

• src/server/tools.ts:179-188 (registration)

  Registration of the prometheus_query_range tool using defineTool, specifying capability, name, title, description, input schema, type, and handler. This object is included in the exported tools array.

  defineTool<typeof PrometheusQueryRangeSchema, QueryResult>({
    capability: "query",
    name: "prometheus_query_range",
    title: "Prometheus Query Range",
    description: "Execute a Prometheus range query",
    inputSchema: PrometheusQueryRangeSchema,
    type: "readonly",
    handle: async (client: PrometheusClient, args) =>
      client.queryRange(args.query, args.start, args.end, args.step),
  }),