added: list-k8s-namespaces prompt

README.md

@@ -10,7 +10,8 @@ Currently available:
 - tool: list-k8s-events in a given context and namespace
 - tool: list-k8s-services in a given context and namespace
 - tool: get-k8s-pod-logs in a given context and namespace
-- prompt: list k8s pods in current context and with given namespace
+- prompt: list-k8s-namespaces in a given context
+- prompt: list-k8s-pods in current context and with given namespace
 
 ## Example usage with Inspector
 

internal/prompts/namespaces.go

@@ -0,0 +1,100 @@
+package prompts
+
+import (
+	"context"
+	"fmt"
+	"sort"
+
+	"github.com/strowk/foxy-contexts/pkg/fxctx"
+	"github.com/strowk/foxy-contexts/pkg/mcp"
+	"github.com/strowk/mcp-k8s-go/internal/content"
+	"github.com/strowk/mcp-k8s-go/internal/k8s"
+	"github.com/strowk/mcp-k8s-go/internal/utils"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+func NewListNamespacesPrompt(pool k8s.ClientPool) fxctx.Prompt {
+	return fxctx.NewPrompt(
+		mcp.Prompt{
+			Name: "list-k8s-namespaces",
+			Description: utils.Ptr(
+				"List Kubernetes Namespaces in the specified context",
+			),
+			Arguments: []mcp.PromptArgument{
+				{
+					Name: "context",
+					Description: utils.Ptr(
+						"Context to list namespaces in, defaults to current context",
+					),
+					Required: utils.Ptr(false),
+				},
+			},
+		},
+		func(req *mcp.GetPromptRequest) (*mcp.GetPromptResult, error) {
+			k8sContext := req.Params.Arguments["context"]
+			clientset, err := pool.GetClientset(k8sContext)
+			if err != nil {
+				return nil, fmt.Errorf("failed to get k8s client: %w", err)
+			}
+
+			namespaces, err := clientset.
+				CoreV1().
+				Namespaces().
+				List(context.Background(), metav1.ListOptions{})
+			if err != nil {
+				return nil, fmt.Errorf("failed to list namespaces: %w", err)
+			}
+
+			sort.Slice(namespaces.Items, func(i, j int) bool {
+				return namespaces.Items[i].Name < namespaces.Items[j].Name
+			})
+
+			ofContextMsg := ""
+			currentContext, err := k8s.GetCurrentContext()
+			if err == nil && currentContext != "" {
+				ofContextMsg = fmt.Sprintf(", context '%s'", currentContext)
+			}
+
+			var messages []mcp.PromptMessage = make(
+				[]mcp.PromptMessage,
+				len(namespaces.Items)+1,
+			)
+			messages[0] = mcp.PromptMessage{
+				Content: mcp.TextContent{
+					Type: "text",
+					Text: fmt.Sprintf(
+						"There are %d namespaces%s:",
+						len(namespaces.Items),
+						ofContextMsg,
+					),
+				},
+				Role: mcp.RoleUser,
+			}
+
+			type NamespaceInList struct {
+				Name string `json:"name"`
+			}
+
+			for i, namespace := range namespaces.Items {
+				content, err := content.NewJsonContent(NamespaceInList{
+					Name: namespace.Name,
+				})
+				if err != nil {
+					return nil, fmt.Errorf("failed to create content: %w", err)
+				}
+				messages[i+1] = mcp.PromptMessage{
+					Content: content,
+					Role:    mcp.RoleUser,
+				}
+			}
+
+			return &mcp.GetPromptResult{
+				Description: utils.Ptr(
+					fmt.Sprintf("Namespaces%s", ofContextMsg),
+				),
+				Messages: messages,
+			}, nil
+		},
+	)
+}

main.go

@@ -78,6 +78,7 @@ func main() {
 		WithTool(tools.NewListPodsTool).
 		WithTool(tools.NewListServicesTool).
 		WithPrompt(prompts.NewListPodsPrompt).
+		WithPrompt(prompts.NewListNamespacesPrompt).
 		WithResourceProvider(resources.NewContextsResourceProvider).
 		WithServerCapabilities(getCapabilities()).
 		// setting up server

packages/npm-mcp-k8s/README.md

@@ -10,7 +10,8 @@ Currently available:
 - tool: list-k8s-events in a given context and namespace
 - tool: list-k8s-services in a given context and namespace
 - tool: get-k8s-pod-logs in a given context and namespace
-- prompt: list k8s pods in current context and with given namespace
+- prompt: list-k8s-namespaces in a given context
+- prompt: list-k8s-pods in current context and with given namespace
 
 ## Example usage with Claude Desktop
 

testdata/list_prompts_test.yaml

@@ -7,6 +7,17 @@ out:
     "result":
       {
         "prompts": [
+          {
+            "name": "list-k8s-namespaces",
+            "description": "List Kubernetes Namespaces in the specified context",
+            "arguments": [
+              {
+                "description": "Context to list namespaces in, defaults to current context",
+                "name": "context",
+                "required": false,
+              },
+            ]
+          },
           {
             "name": "list-k8s-pods",
             "description": "List Kubernetes Pods with name and namespace in the current context",

testdata/with_k3d/list_k8s_namespaces_test.yaml

@@ -1,3 +1,5 @@
+case: List k8s namespaces using tool
+
 in:
   {
     "jsonrpc": "2.0",
@@ -42,3 +44,68 @@ out:
         "isError": false,
       },
   }
+
+---
+
+case: List k8s namespaces using prompt
+
+in: {
+  "jsonrpc": "2.0",
+  "method": "prompts/get",
+  "id": 3,
+  "params": {
+    "name": "list-k8s-namespaces"
+  }
+}
+
+out: {
+  "jsonrpc": "2.0",
+  "id": 3,
+  "result": {
+    "description": "Namespaces, context 'k3d-mcp-k8s-integration-test'",
+    "messages": [
+      {
+        "content": {
+          "type": "text",
+          "text": "There are 5 namespaces, context 'k3d-mcp-k8s-integration-test':"
+        },
+        "role": "user"
+      },
+      {
+        "content": {
+          "type": "text",
+          "text": "{\"name\":\"default\"}"
+        },
+        "role": "user"
+      },
+      {
+        "content": {
+          "type": "text",
+          "text": "{\"name\":\"kube-node-lease\"}"
+        },
+        "role": "user"
+      },
+      {
+        "content": {
+          "type": "text",
+          "text": "{\"name\":\"kube-public\"}"
+        },
+        "role": "user"
+      },
+      {
+        "content": {
+          "type": "text",
+          "text": "{\"name\":\"kube-system\"}"
+        },
+        "role": "user"
+      },
+      {
+        "content": {
+          "type": "text",
+          "text": "{\"name\":\"test\"}"
+        },
+        "role": "user"
+      }
+    ]
+  }
+}