OpenTelemetry MCP Server

Instructions

Implementation Reference

• src/tools/prometheus_tools.py:184-216 (handler)

  The actual implementation of the 'list_labels' tool, which queries Prometheus for label names.

  async def list_labels(
      client: PrometheusClient,
      metric: Optional[str] = None
  ) -> Dict[str, Any]:
      """
      Get all label names in Prometheus.
      
      Args:
          client: Prometheus client
          metric: Optional metric to get labels for
          
      Returns:
          List of label names
      """
      try:
          match = [f"{{{metric}}}"] if metric else None
          result = await client.labels(match)
          
          if result.get("status") == "success":
              labels = result.get("data", [])
              return {
                  "success": True,
                  "count": len(labels),
                  "labels": labels
              }
          else:
              return {
                  "success": False,
                  "error": "Failed to fetch labels"
              }
      except Exception as e:
          logger.error(f"Error listing labels: {e}")
          return {