diff --git a/servers/mackerel/server.yaml b/servers/mackerel/server.yaml
new file mode 100644
index 000000000..e9a6362f1
--- /dev/null
+++ b/servers/mackerel/server.yaml
@@ -0,0 +1,20 @@
+name: mackerel
+image: ghcr.io/mackerelio-labs/mcp-server
+type: server
+meta:
+  category: monitoring
+  tags:
+    - monitoring
+about:
+  title: Mackerel
+  description: Official Mackerel MCP Server. Interact with Mackerel over the Mackerel API. Retrieve metrics, traces, alerts and more.
+  icon: https://mackerel.io/assets/images/common/favicons/app-256.png
+source:
+  project: https://github.com/mackerelio-labs/mcp-server
+  commit: 0735a42a0d6443cdf69dbfb95fce23b9b98c3175
+config:
+  description: Configure the connection to Mackerel
+  secrets:
+    - name: mackerel.apikey
+      env: MACKEREL_APIKEY
+      example: <MACKEREL_APIKEY>