diff --git a/chart/templates/deployment.yaml b/chart/templates/deployment.yaml
index 1b608e6..fa52790 100644
--- a/chart/templates/deployment.yaml
+++ b/chart/templates/deployment.yaml
@@ -170,7 +170,7 @@ spec:
         - name: fetch-mcp
           image: "{{ .Values.mcp.sidecars.fetch.image.repository }}:{{ .Values.mcp.sidecars.fetch.image.tag }}"
           imagePullPolicy: Always
-          command: ["fastmcp", "run", "--transport", "sse", "--host", "0.0.0.0", "--port", "{{ .Values.mcp.sidecars.fetch.port }}"]
+          command: ["npx", "-y", "@modelcontextprotocol/server-fetch"]
           ports:
             - name: fetch
               containerPort: {{ .Values.mcp.sidecars.fetch.port }}
@@ -191,7 +191,7 @@ spec:
         - name: sequentialthinking-mcp
           image: "{{ .Values.mcp.sidecars.sequentialthinking.image.repository }}:{{ .Values.mcp.sidecars.sequentialthinking.image.tag }}"
           imagePullPolicy: Always
-          command: ["fastmcp", "run", "--transport", "sse", "--host", "0.0.0.0", "--port", "{{ .Values.mcp.sidecars.sequentialthinking.port }}"]
+          command: ["npx", "-y", "@modelcontextprotocol/server-sequential-thinking"]
           ports:
             - name: seqthinking
               containerPort: {{ .Values.mcp.sidecars.sequentialthinking.port }}
diff --git a/chart/values.schema.json b/chart/values.schema.json
index 8208fb9..2a68a78 100644
--- a/chart/values.schema.json
+++ b/chart/values.schema.json
@@ -4,6 +4,7 @@
   "title": "Dev Container Helm Chart Values Schema",
   "description": "Schema for validating values.yaml in the Dev Container Helm chart",
   "type": "object",
+  "additionalProperties": true,
   "properties": {
     "name": {
       "type": "string",
diff --git a/chart/values.yaml b/chart/values.yaml
index 69b114b..fb387b6 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -112,8 +112,8 @@ mcp:
     fetch:
       enabled: true
       image:
-        repository: mcp/fetch
-        tag: latest
+        repository: node
+        tag: 22-slim
       port: 8082
       resources:
         requests:
@@ -127,8 +127,8 @@ mcp:
     sequentialthinking:
       enabled: true
       image:
-        repository: mcp/sequentialthinking
-        tag: latest
+        repository: node
+        tag: 22-slim
       port: 8083
       resources:
         requests: