diff --git a/comps/cores/mega/http_service.py b/comps/cores/mega/http_service.py
index 470059b824..86c5ba8d5f 100644
--- a/comps/cores/mega/http_service.py
+++ b/comps/cores/mega/http_service.py
@@ -4,6 +4,7 @@
 from typing import Optional
 
 from fastapi import FastAPI
+from prometheus_fastapi_instrumentator import Instrumentator
 from uvicorn import Config, Server
 
 from .base_service import BaseService
@@ -32,6 +33,7 @@ def __init__(
         self.uvicorn_kwargs = uvicorn_kwargs or {}
         self.cors = cors
         self._app = self._create_app()
+        Instrumentator().instrument(self._app).expose(self._app)
 
     @property
     def app(self):
diff --git a/requirements.txt b/requirements.txt
index 12e0cdd9cb..6a453d50fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,7 @@ httpx
 opentelemetry-api
 opentelemetry-exporter-otlp
 opentelemetry-sdk
+prometheus-fastapi-instrumentator
 pyyaml
 requests
 shortuuid
diff --git a/tests/cores/mega/test_microservice.py b/tests/cores/mega/test_microservice.py
index 126fb03ca5..dbaff9a760 100644
--- a/tests/cores/mega/test_microservice.py
+++ b/tests/cores/mega/test_microservice.py
@@ -31,6 +31,8 @@ def test_add_route(self):
         response = self.client.post("/v1/add", json={"text": "Hello, "})
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.json()["text"], "Hello, OPEA Project!")
+        response = self.client.get("/metrics")
+        self.assertEqual(response.status_code, 200)
 
 
 if __name__ == "__main__":