diff --git a/README.md b/README.md
index acbf717f0..c8a55ea7b 100644
--- a/README.md
+++ b/README.md
@@ -539,15 +539,15 @@ The following sets of tools are available (all are on by default):
   - `repo`: Repository name (string, required)
 
 - **list_issues** - List issues
-  - `direction`: Sort direction (string, optional)
+  - `after`: Cursor for pagination. Use the endCursor from the previous page's PageInfo for GraphQL APIs. (string, optional)
+  - `direction`: Order direction. If provided, the 'orderBy' also needs to be provided. (string, optional)
   - `labels`: Filter by labels (string[], optional)
+  - `orderBy`: Order issues by field. If provided, the 'direction' also needs to be provided. (string, optional)
   - `owner`: Repository owner (string, required)
-  - `page`: Page number for pagination (min 1) (number, optional)
   - `perPage`: Results per page for pagination (min 1, max 100) (number, optional)
   - `repo`: Repository name (string, required)
   - `since`: Filter by date (ISO 8601 timestamp) (string, optional)
-  - `sort`: Sort order (string, optional)
-  - `state`: Filter by state (string, optional)
+  - `state`: Filter by state, by default both open and closed issues are returned when not provided (string, optional)
 
 - **list_sub_issues** - List sub-issues
   - `issue_number`: Issue number (number, required)
diff --git a/pkg/github/__toolsnaps__/list_issues.snap b/pkg/github/__toolsnaps__/list_issues.snap
index 4fe155f09..f63da9c85 100644
--- a/pkg/github/__toolsnaps__/list_issues.snap
+++ b/pkg/github/__toolsnaps__/list_issues.snap
@@ -3,14 +3,18 @@
     "title": "List issues",
     "readOnlyHint": true
   },
-  "description": "List issues in a GitHub repository.",
+  "description": "List issues in a GitHub repository. For pagination, use the 'endCursor' from the previous response's 'pageInfo' in the 'after' parameter.",
   "inputSchema": {
     "properties": {
+      "after": {
+        "description": "Cursor for pagination. Use the endCursor from the previous page's PageInfo for GraphQL APIs.",
+        "type": "string"
+      },
       "direction": {
-        "description": "Sort direction",
+        "description": "Order direction. If provided, the 'orderBy' also needs to be provided.",
         "enum": [
-          "asc",
-          "desc"
+          "ASC",
+          "DESC"
         ],
         "type": "string"
       },
@@ -21,15 +25,18 @@
         },
         "type": "array"
       },
+      "orderBy": {
+        "description": "Order issues by field. If provided, the 'direction' also needs to be provided.",
+        "enum": [
+          "CREATED_AT",
+          "UPDATED_AT"
+        ],
+        "type": "string"
+      },
       "owner": {
         "description": "Repository owner",
         "type": "string"
       },
-      "page": {
-        "description": "Page number for pagination (min 1)",
-        "minimum": 1,
-        "type": "number"
-      },
       "perPage": {
         "description": "Results per page for pagination (min 1, max 100)",
         "maximum": 100,
@@ -44,21 +51,11 @@
         "description": "Filter by date (ISO 8601 timestamp)",
         "type": "string"
       },
-      "sort": {
-        "description": "Sort order",
-        "enum": [
-          "created",
-          "updated",
-          "comments"
-        ],
-        "type": "string"
-      },
       "state": {
-        "description": "Filter by state",
+        "description": "Filter by state, by default both open and closed issues are returned when not provided",
         "enum": [
-          "open",
-          "closed",
-          "all"
+          "OPEN",
+          "CLOSED"
         ],
         "type": "string"
       }
diff --git a/pkg/github/issues.go b/pkg/github/issues.go
index de35dac12..ad0a0749b 100644
--- a/pkg/github/issues.go
+++ b/pkg/github/issues.go
@@ -18,6 +18,128 @@ import (
 	"github.com/shurcooL/githubv4"
 )
 
+// IssueFragment represents a fragment of an issue node in the GraphQL API.
+type IssueFragment struct {
+	Number     githubv4.Int
+	Title      githubv4.String
+	Body       githubv4.String
+	State      githubv4.String
+	DatabaseID int64
+
+	Author struct {
+		Login githubv4.String
+	}
+	CreatedAt githubv4.DateTime
+	UpdatedAt githubv4.DateTime
+	Labels    struct {
+		Nodes []struct {
+			Name        githubv4.String
+			ID          githubv4.String
+			Description githubv4.String
+		}
+	} `graphql:"labels(first: 100)"`
+}
+
+// Common interface for all issue query types
+type IssueQueryResult interface {
+	GetIssueFragment() IssueQueryFragment
+}
+
+type IssueQueryFragment struct {
+	Nodes    []IssueFragment `graphql:"nodes"`
+	PageInfo struct {
+		HasNextPage     githubv4.Boolean
+		HasPreviousPage githubv4.Boolean
+		StartCursor     githubv4.String
+		EndCursor       githubv4.String
+	}
+	TotalCount int
+}
+
+// ListIssuesQuery is the root query structure for fetching issues with optional label filtering.
+type ListIssuesQuery struct {
+	Repository struct {
+		Issues IssueQueryFragment `graphql:"issues(first: $first, after: $after, states: $states, orderBy: {field: $orderBy, direction: $direction})"`
+	} `graphql:"repository(owner: $owner, name: $repo)"`
+}
+
+// ListIssuesQueryTypeWithLabels is the query structure for fetching issues with optional label filtering.
+type ListIssuesQueryTypeWithLabels struct {
+	Repository struct {
+		Issues IssueQueryFragment `graphql:"issues(first: $first, after: $after, labels: $labels, states: $states, orderBy: {field: $orderBy, direction: $direction})"`
+	} `graphql:"repository(owner: $owner, name: $repo)"`
+}
+
+// ListIssuesQueryWithSince is the query structure for fetching issues without label filtering but with since filtering.
+type ListIssuesQueryWithSince struct {
+	Repository struct {
+		Issues IssueQueryFragment `graphql:"issues(first: $first, after: $after, states: $states, orderBy: {field: $orderBy, direction: $direction}, filterBy: {since: $since})"`
+	} `graphql:"repository(owner: $owner, name: $repo)"`
+}
+
+// ListIssuesQueryTypeWithLabelsWithSince is the query structure for fetching issues with both label and since filtering.
+type ListIssuesQueryTypeWithLabelsWithSince struct {
+	Repository struct {
+		Issues IssueQueryFragment `graphql:"issues(first: $first, after: $after, labels: $labels, states: $states, orderBy: {field: $orderBy, direction: $direction}, filterBy: {since: $since})"`
+	} `graphql:"repository(owner: $owner, name: $repo)"`
+}
+
+// Implement the interface for all query types
+func (q *ListIssuesQueryTypeWithLabels) GetIssueFragment() IssueQueryFragment {
+	return q.Repository.Issues
+}
+
+func (q *ListIssuesQuery) GetIssueFragment() IssueQueryFragment {
+	return q.Repository.Issues
+}
+
+func (q *ListIssuesQueryWithSince) GetIssueFragment() IssueQueryFragment {
+	return q.Repository.Issues
+}
+
+func (q *ListIssuesQueryTypeWithLabelsWithSince) GetIssueFragment() IssueQueryFragment {
+	return q.Repository.Issues
+}
+
+func getIssueQueryType(hasLabels bool, hasSince bool) any {
+	switch {
+	case hasLabels && hasSince:
+		return &ListIssuesQueryTypeWithLabelsWithSince{}
+	case hasLabels:
+		return &ListIssuesQueryTypeWithLabels{}
+	case hasSince:
+		return &ListIssuesQueryWithSince{}
+	default:
+		return &ListIssuesQuery{}
+	}
+}
+
+func fragmentToIssue(fragment IssueFragment) *github.Issue {
+	// Convert GraphQL labels to GitHub API labels format
+	var foundLabels []*github.Label
+	for _, labelNode := range fragment.Labels.Nodes {
+		foundLabels = append(foundLabels, &github.Label{
+			Name:        github.Ptr(string(labelNode.Name)),
+			NodeID:      github.Ptr(string(labelNode.ID)),
+			Description: github.Ptr(string(labelNode.Description)),
+		})
+	}
+
+	return &github.Issue{
+		Number:    github.Ptr(int(fragment.Number)),
+		Title:     github.Ptr(string(fragment.Title)),
+		CreatedAt: &github.Timestamp{Time: fragment.CreatedAt.Time},
+		UpdatedAt: &github.Timestamp{Time: fragment.UpdatedAt.Time},
+		User: &github.User{
+			Login: github.Ptr(string(fragment.Author.Login)),
+		},
+		State:  github.Ptr(string(fragment.State)),
+		ID:     github.Ptr(fragment.DatabaseID),
+		Body:   github.Ptr(string(fragment.Body)),
+		Labels: foundLabels,
+	}
+}
+
 // GetIssue creates a tool to get details of a specific issue in a GitHub repository.
 func GetIssue(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
 	return mcp.NewTool("get_issue",
@@ -724,9 +846,9 @@ func CreateIssue(getClient GetClientFn, t translations.TranslationHelperFunc) (t
 }
 
 // ListIssues creates a tool to list and filter repository issues
-func ListIssues(getClient GetClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
+func ListIssues(getGQLClient GetGQLClientFn, t translations.TranslationHelperFunc) (tool mcp.Tool, handler server.ToolHandlerFunc) {
 	return mcp.NewTool("list_issues",
-			mcp.WithDescription(t("TOOL_LIST_ISSUES_DESCRIPTION", "List issues in a GitHub repository.")),
+			mcp.WithDescription(t("TOOL_LIST_ISSUES_DESCRIPTION", "List issues in a GitHub repository. For pagination, use the 'endCursor' from the previous response's 'pageInfo' in the 'after' parameter.")),
 			mcp.WithToolAnnotation(mcp.ToolAnnotation{
 				Title:        t("TOOL_LIST_ISSUES_USER_TITLE", "List issues"),
 				ReadOnlyHint: ToBoolPtr(true),
@@ -740,8 +862,8 @@ func ListIssues(getClient GetClientFn, t translations.TranslationHelperFunc) (to
 				mcp.Description("Repository name"),
 			),
 			mcp.WithString("state",
-				mcp.Description("Filter by state"),
-				mcp.Enum("open", "closed", "all"),
+				mcp.Description("Filter by state, by default both open and closed issues are returned when not provided"),
+				mcp.Enum("OPEN", "CLOSED"),
 			),
 			mcp.WithArray("labels",
 				mcp.Description("Filter by labels"),
@@ -751,18 +873,18 @@ func ListIssues(getClient GetClientFn, t translations.TranslationHelperFunc) (to
 					},
 				),
 			),
-			mcp.WithString("sort",
-				mcp.Description("Sort order"),
-				mcp.Enum("created", "updated", "comments"),
+			mcp.WithString("orderBy",
+				mcp.Description("Order issues by field. If provided, the 'direction' also needs to be provided."),
+				mcp.Enum("CREATED_AT", "UPDATED_AT"),
 			),
 			mcp.WithString("direction",
-				mcp.Description("Sort direction"),
-				mcp.Enum("asc", "desc"),
+				mcp.Description("Order direction. If provided, the 'orderBy' also needs to be provided."),
+				mcp.Enum("ASC", "DESC"),
 			),
 			mcp.WithString("since",
 				mcp.Description("Filter by date (ISO 8601 timestamp)"),
 			),
-			WithPagination(),
+			WithCursorPagination(),
 		),
 		func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 			owner, err := RequiredParam[string](request, "owner")
@@ -774,74 +896,164 @@ func ListIssues(getClient GetClientFn, t translations.TranslationHelperFunc) (to
 				return mcp.NewToolResultError(err.Error()), nil
 			}
 
-			opts := &github.IssueListByRepoOptions{}
-
 			// Set optional parameters if provided
-			opts.State, err = OptionalParam[string](request, "state")
+			state, err := OptionalParam[string](request, "state")
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
 
+			// If the state has a value, cast into an array of strings
+			var states []githubv4.IssueState
+			if state != "" {
+				states = append(states, githubv4.IssueState(state))
+			} else {
+				states = []githubv4.IssueState{githubv4.IssueStateOpen, githubv4.IssueStateClosed}
+			}
+
 			// Get labels
-			opts.Labels, err = OptionalStringArrayParam(request, "labels")
+			labels, err := OptionalStringArrayParam(request, "labels")
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
 
-			opts.Sort, err = OptionalParam[string](request, "sort")
+			orderBy, err := OptionalParam[string](request, "orderBy")
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
 
-			opts.Direction, err = OptionalParam[string](request, "direction")
+			direction, err := OptionalParam[string](request, "direction")
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
 
+			// These variables are required for the GraphQL query to be set by default
+			// If orderBy is empty, default to CREATED_AT
+			if orderBy == "" {
+				orderBy = "CREATED_AT"
+			}
+			// If direction is empty, default to DESC
+			if direction == "" {
+				direction = "DESC"
+			}
+
 			since, err := OptionalParam[string](request, "since")
 			if err != nil {
 				return mcp.NewToolResultError(err.Error()), nil
 			}
+
+			// There are two optional parameters: since and labels.
+			var sinceTime time.Time
+			var hasSince bool
 			if since != "" {
-				timestamp, err := parseISOTimestamp(since)
+				sinceTime, err = parseISOTimestamp(since)
 				if err != nil {
 					return mcp.NewToolResultError(fmt.Sprintf("failed to list issues: %s", err.Error())), nil
 				}
-				opts.Since = timestamp
+				hasSince = true
 			}
+			hasLabels := len(labels) > 0
 
-			if page, ok := request.GetArguments()["page"].(float64); ok {
-				opts.ListOptions.Page = int(page)
+			// Get pagination parameters and convert to GraphQL format
+			pagination, err := OptionalCursorPaginationParams(request)
+			if err != nil {
+				return nil, err
 			}
 
-			if perPage, ok := request.GetArguments()["perPage"].(float64); ok {
-				opts.ListOptions.PerPage = int(perPage)
+			// Check if someone tried to use page-based pagination instead of cursor-based
+			if _, pageProvided := request.GetArguments()["page"]; pageProvided {
+				return mcp.NewToolResultError("This tool uses cursor-based pagination. Use the 'after' parameter with the 'endCursor' value from the previous response instead of 'page'."), nil
 			}
 
-			client, err := getClient(ctx)
+			// Check if pagination parameters were explicitly provided
+			_, perPageProvided := request.GetArguments()["perPage"]
+			paginationExplicit := perPageProvided
+
+			paginationParams, err := pagination.ToGraphQLParams()
 			if err != nil {
-				return nil, fmt.Errorf("failed to get GitHub client: %w", err)
+				return nil, err
+			}
+
+			// Use default of 30 if pagination was not explicitly provided
+			if !paginationExplicit {
+				defaultFirst := int32(DefaultGraphQLPageSize)
+				paginationParams.First = &defaultFirst
 			}
-			issues, resp, err := client.Issues.ListByRepo(ctx, owner, repo, opts)
+
+			client, err := getGQLClient(ctx)
 			if err != nil {
-				return nil, fmt.Errorf("failed to list issues: %w", err)
+				return mcp.NewToolResultError(fmt.Sprintf("failed to get GitHub GQL client: %v", err)), nil
 			}
-			defer func() { _ = resp.Body.Close() }()
 
-			if resp.StatusCode != http.StatusOK {
-				body, err := io.ReadAll(resp.Body)
-				if err != nil {
-					return nil, fmt.Errorf("failed to read response body: %w", err)
+			vars := map[string]interface{}{
+				"owner":     githubv4.String(owner),
+				"repo":      githubv4.String(repo),
+				"states":    states,
+				"orderBy":   githubv4.IssueOrderField(orderBy),
+				"direction": githubv4.OrderDirection(direction),
+				"first":     githubv4.Int(*paginationParams.First),
+			}
+
+			if paginationParams.After != nil {
+				vars["after"] = githubv4.String(*paginationParams.After)
+			} else {
+				// Used within query, therefore must be set to nil and provided as $after
+				vars["after"] = (*githubv4.String)(nil)
+			}
+
+			// Ensure optional parameters are set
+			if hasLabels {
+				// Use query with labels filtering - convert string labels to githubv4.String slice
+				labelStrings := make([]githubv4.String, len(labels))
+				for i, label := range labels {
+					labelStrings[i] = githubv4.String(label)
 				}
-				return mcp.NewToolResultError(fmt.Sprintf("failed to list issues: %s", string(body))), nil
+				vars["labels"] = labelStrings
 			}
 
-			r, err := json.Marshal(issues)
+			if hasSince {
+				vars["since"] = githubv4.DateTime{Time: sinceTime}
+			}
+
+			issueQuery := getIssueQueryType(hasLabels, hasSince)
+			if err := client.Query(ctx, issueQuery, vars); err != nil {
+				return mcp.NewToolResultError(err.Error()), nil
+			}
+
+			// Extract and convert all issue nodes using the common interface
+			var issues []*github.Issue
+			var pageInfo struct {
+				HasNextPage     githubv4.Boolean
+				HasPreviousPage githubv4.Boolean
+				StartCursor     githubv4.String
+				EndCursor       githubv4.String
+			}
+			var totalCount int
+
+			if queryResult, ok := issueQuery.(IssueQueryResult); ok {
+				fragment := queryResult.GetIssueFragment()
+				for _, issue := range fragment.Nodes {
+					issues = append(issues, fragmentToIssue(issue))
+				}
+				pageInfo = fragment.PageInfo
+				totalCount = fragment.TotalCount
+			}
+
+			// Create response with issues
+			response := map[string]interface{}{
+				"issues": issues,
+				"pageInfo": map[string]interface{}{
+					"hasNextPage":     pageInfo.HasNextPage,
+					"hasPreviousPage": pageInfo.HasPreviousPage,
+					"startCursor":     string(pageInfo.StartCursor),
+					"endCursor":       string(pageInfo.EndCursor),
+				},
+				"totalCount": totalCount,
+			}
+			out, err := json.Marshal(response)
 			if err != nil {
 				return nil, fmt.Errorf("failed to marshal issues: %w", err)
 			}
-
-			return mcp.NewToolResultText(string(r)), nil
+			return mcp.NewToolResultText(string(out)), nil
 		}
 }
 
diff --git a/pkg/github/issues_test.go b/pkg/github/issues_test.go
index 3de27c8e6..2a530ef48 100644
--- a/pkg/github/issues_test.go
+++ b/pkg/github/issues_test.go
@@ -648,8 +648,8 @@ func Test_CreateIssue(t *testing.T) {
 
 func Test_ListIssues(t *testing.T) {
 	// Verify tool definition
-	mockClient := github.NewClient(nil)
-	tool, _ := ListIssues(stubGetClientFn(mockClient), translations.NullTranslationHelper)
+	mockClient := githubv4.NewClient(nil)
+	tool, _ := ListIssues(stubGetGQLClientFn(mockClient), translations.NullTranslationHelper)
 	require.NoError(t, toolsnaps.Test(tool.Name, tool))
 
 	assert.Equal(t, "list_issues", tool.Name)
@@ -658,166 +658,288 @@ func Test_ListIssues(t *testing.T) {
 	assert.Contains(t, tool.InputSchema.Properties, "repo")
 	assert.Contains(t, tool.InputSchema.Properties, "state")
 	assert.Contains(t, tool.InputSchema.Properties, "labels")
-	assert.Contains(t, tool.InputSchema.Properties, "sort")
+	assert.Contains(t, tool.InputSchema.Properties, "orderBy")
 	assert.Contains(t, tool.InputSchema.Properties, "direction")
 	assert.Contains(t, tool.InputSchema.Properties, "since")
-	assert.Contains(t, tool.InputSchema.Properties, "page")
+	assert.Contains(t, tool.InputSchema.Properties, "after")
 	assert.Contains(t, tool.InputSchema.Properties, "perPage")
 	assert.ElementsMatch(t, tool.InputSchema.Required, []string{"owner", "repo"})
 
-	// Setup mock issues for success case
-	mockIssues := []*github.Issue{
+	// Mock issues data
+	mockIssuesAll := []map[string]any{
+		{
+			"number":     123,
+			"title":      "First Issue",
+			"body":       "This is the first test issue",
+			"state":      "OPEN",
+			"databaseId": 1001,
+			"createdAt":  "2023-01-01T00:00:00Z",
+			"updatedAt":  "2023-01-01T00:00:00Z",
+			"author":     map[string]any{"login": "user1"},
+			"labels": map[string]any{
+				"nodes": []map[string]any{
+					{"name": "bug", "id": "label1", "description": "Bug label"},
+				},
+			},
+		},
 		{
-			Number:    github.Ptr(123),
-			Title:     github.Ptr("First Issue"),
-			Body:      github.Ptr("This is the first test issue"),
-			State:     github.Ptr("open"),
-			HTMLURL:   github.Ptr("https://github.com/owner/repo/issues/123"),
-			CreatedAt: &github.Timestamp{Time: time.Date(2023, 1, 1, 0, 0, 0, 0, time.UTC)},
+			"number":     456,
+			"title":      "Second Issue",
+			"body":       "This is the second test issue",
+			"state":      "OPEN",
+			"databaseId": 1002,
+			"createdAt":  "2023-02-01T00:00:00Z",
+			"updatedAt":  "2023-02-01T00:00:00Z",
+			"author":     map[string]any{"login": "user2"},
+			"labels": map[string]any{
+				"nodes": []map[string]any{
+					{"name": "enhancement", "id": "label2", "description": "Enhancement label"},
+				},
+			},
 		},
+	}
+
+	mockIssuesOpen := []map[string]any{mockIssuesAll[0], mockIssuesAll[1]}
+	mockIssuesClosed := []map[string]any{
 		{
-			Number:    github.Ptr(456),
-			Title:     github.Ptr("Second Issue"),
-			Body:      github.Ptr("This is the second test issue"),
-			State:     github.Ptr("open"),
-			HTMLURL:   github.Ptr("https://github.com/owner/repo/issues/456"),
-			Labels:    []*github.Label{{Name: github.Ptr("bug")}},
-			CreatedAt: &github.Timestamp{Time: time.Date(2023, 2, 1, 0, 0, 0, 0, time.UTC)},
+			"number":     789,
+			"title":      "Closed Issue",
+			"body":       "This is a closed issue",
+			"state":      "CLOSED",
+			"databaseId": 1003,
+			"createdAt":  "2023-03-01T00:00:00Z",
+			"updatedAt":  "2023-03-01T00:00:00Z",
+			"author":     map[string]any{"login": "user3"},
+			"labels": map[string]any{
+				"nodes": []map[string]any{},
+			},
 		},
 	}
 
+	// Mock responses
+	mockResponseListAll := githubv4mock.DataResponse(map[string]any{
+		"repository": map[string]any{
+			"issues": map[string]any{
+				"nodes": mockIssuesAll,
+				"pageInfo": map[string]any{
+					"hasNextPage":     false,
+					"hasPreviousPage": false,
+					"startCursor":     "",
+					"endCursor":       "",
+				},
+				"totalCount": 2,
+			},
+		},
+	})
+
+	mockResponseOpenOnly := githubv4mock.DataResponse(map[string]any{
+		"repository": map[string]any{
+			"issues": map[string]any{
+				"nodes": mockIssuesOpen,
+				"pageInfo": map[string]any{
+					"hasNextPage":     false,
+					"hasPreviousPage": false,
+					"startCursor":     "",
+					"endCursor":       "",
+				},
+				"totalCount": 2,
+			},
+		},
+	})
+
+	mockResponseClosedOnly := githubv4mock.DataResponse(map[string]any{
+		"repository": map[string]any{
+			"issues": map[string]any{
+				"nodes": mockIssuesClosed,
+				"pageInfo": map[string]any{
+					"hasNextPage":     false,
+					"hasPreviousPage": false,
+					"startCursor":     "",
+					"endCursor":       "",
+				},
+				"totalCount": 1,
+			},
+		},
+	})
+
+	mockErrorRepoNotFound := githubv4mock.ErrorResponse("repository not found")
+
+	// Variables matching what GraphQL receives after JSON marshaling/unmarshaling
+	varsListAll := map[string]interface{}{
+		"owner":     "owner",
+		"repo":      "repo",
+		"states":    []interface{}{"OPEN", "CLOSED"},
+		"orderBy":   "CREATED_AT",
+		"direction": "DESC",
+		"first":     float64(30),
+		"after":     (*string)(nil),
+	}
+
+	varsOpenOnly := map[string]interface{}{
+		"owner":     "owner",
+		"repo":      "repo",
+		"states":    []interface{}{"OPEN"},
+		"orderBy":   "CREATED_AT",
+		"direction": "DESC",
+		"first":     float64(30),
+		"after":     (*string)(nil),
+	}
+
+	varsClosedOnly := map[string]interface{}{
+		"owner":     "owner",
+		"repo":      "repo",
+		"states":    []interface{}{"CLOSED"},
+		"orderBy":   "CREATED_AT",
+		"direction": "DESC",
+		"first":     float64(30),
+		"after":     (*string)(nil),
+	}
+
+	varsWithLabels := map[string]interface{}{
+		"owner":     "owner",
+		"repo":      "repo",
+		"states":    []interface{}{"OPEN", "CLOSED"},
+		"labels":    []interface{}{"bug", "enhancement"},
+		"orderBy":   "CREATED_AT",
+		"direction": "DESC",
+		"first":     float64(30),
+		"after":     (*string)(nil),
+	}
+
+	varsRepoNotFound := map[string]interface{}{
+		"owner":     "owner",
+		"repo":      "nonexistent-repo",
+		"states":    []interface{}{"OPEN", "CLOSED"},
+		"orderBy":   "CREATED_AT",
+		"direction": "DESC",
+		"first":     float64(30),
+		"after":     (*string)(nil),
+	}
+
 	tests := []struct {
-		name           string
-		mockedClient   *http.Client
-		requestArgs    map[string]interface{}
-		expectError    bool
-		expectedIssues []*github.Issue
-		expectedErrMsg string
+		name          string
+		reqParams     map[string]interface{}
+		expectError   bool
+		errContains   string
+		expectedCount int
+		verifyOrder   func(t *testing.T, issues []*github.Issue)
 	}{
 		{
-			name: "list issues with minimal parameters",
-			mockedClient: mock.NewMockedHTTPClient(
-				mock.WithRequestMatch(
-					mock.GetReposIssuesByOwnerByRepo,
-					mockIssues,
-				),
-			),
-			requestArgs: map[string]interface{}{
+			name: "list all issues",
+			reqParams: map[string]interface{}{
 				"owner": "owner",
 				"repo":  "repo",
 			},
-			expectError:    false,
-			expectedIssues: mockIssues,
+			expectError:   false,
+			expectedCount: 2,
 		},
 		{
-			name: "list issues with all parameters",
-			mockedClient: mock.NewMockedHTTPClient(
-				mock.WithRequestMatchHandler(
-					mock.GetReposIssuesByOwnerByRepo,
-					expectQueryParams(t, map[string]string{
-						"state":     "open",
-						"labels":    "bug,enhancement",
-						"sort":      "created",
-						"direction": "desc",
-						"since":     "2023-01-01T00:00:00Z",
-						"page":      "1",
-						"per_page":  "30",
-					}).andThen(
-						mockResponse(t, http.StatusOK, mockIssues),
-					),
-				),
-			),
-			requestArgs: map[string]interface{}{
-				"owner":     "owner",
-				"repo":      "repo",
-				"state":     "open",
-				"labels":    []any{"bug", "enhancement"},
-				"sort":      "created",
-				"direction": "desc",
-				"since":     "2023-01-01T00:00:00Z",
-				"page":      float64(1),
-				"perPage":   float64(30),
+			name: "filter by open state",
+			reqParams: map[string]interface{}{
+				"owner": "owner",
+				"repo":  "repo",
+				"state": "OPEN",
 			},
-			expectError:    false,
-			expectedIssues: mockIssues,
+			expectError:   false,
+			expectedCount: 2,
 		},
 		{
-			name: "invalid since parameter",
-			mockedClient: mock.NewMockedHTTPClient(
-				mock.WithRequestMatch(
-					mock.GetReposIssuesByOwnerByRepo,
-					mockIssues,
-				),
-			),
-			requestArgs: map[string]interface{}{
+			name: "filter by closed state",
+			reqParams: map[string]interface{}{
 				"owner": "owner",
 				"repo":  "repo",
-				"since": "invalid-date",
+				"state": "CLOSED",
 			},
-			expectError:    true,
-			expectedErrMsg: "invalid ISO 8601 timestamp",
+			expectError:   false,
+			expectedCount: 1,
 		},
 		{
-			name: "list issues fails with error",
-			mockedClient: mock.NewMockedHTTPClient(
-				mock.WithRequestMatchHandler(
-					mock.GetReposIssuesByOwnerByRepo,
-					http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-						w.WriteHeader(http.StatusNotFound)
-						_, _ = w.Write([]byte(`{"message": "Repository not found"}`))
-					}),
-				),
-			),
-			requestArgs: map[string]interface{}{
-				"owner": "nonexistent",
-				"repo":  "repo",
+			name: "filter by labels",
+			reqParams: map[string]interface{}{
+				"owner":  "owner",
+				"repo":   "repo",
+				"labels": []any{"bug", "enhancement"},
 			},
-			expectError:    true,
-			expectedErrMsg: "failed to list issues",
+			expectError:   false,
+			expectedCount: 2,
+		},
+		{
+			name: "repository not found error",
+			reqParams: map[string]interface{}{
+				"owner": "owner",
+				"repo":  "nonexistent-repo",
+			},
+			expectError: true,
+			errContains: "repository not found",
 		},
 	}
 
+	// Define the actual query strings that match the implementation
+	qBasicNoLabels := "query($after:String$direction:OrderDirection!$first:Int!$orderBy:IssueOrderField!$owner:String!$repo:String!$states:[IssueState!]!){repository(owner: $owner, name: $repo){issues(first: $first, after: $after, states: $states, orderBy: {field: $orderBy, direction: $direction}){nodes{number,title,body,state,databaseId,author{login},createdAt,updatedAt,labels(first: 100){nodes{name,id,description}}},pageInfo{hasNextPage,hasPreviousPage,startCursor,endCursor},totalCount}}}"
+	qWithLabels := "query($after:String$direction:OrderDirection!$first:Int!$labels:[String!]!$orderBy:IssueOrderField!$owner:String!$repo:String!$states:[IssueState!]!){repository(owner: $owner, name: $repo){issues(first: $first, after: $after, labels: $labels, states: $states, orderBy: {field: $orderBy, direction: $direction}){nodes{number,title,body,state,databaseId,author{login},createdAt,updatedAt,labels(first: 100){nodes{name,id,description}}},pageInfo{hasNextPage,hasPreviousPage,startCursor,endCursor},totalCount}}}"
+
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
-			// Setup client with mock
-			client := github.NewClient(tc.mockedClient)
-			_, handler := ListIssues(stubGetClientFn(client), translations.NullTranslationHelper)
+			var httpClient *http.Client
+
+			switch tc.name {
+			case "list all issues":
+				matcher := githubv4mock.NewQueryMatcher(qBasicNoLabels, varsListAll, mockResponseListAll)
+				httpClient = githubv4mock.NewMockedHTTPClient(matcher)
+			case "filter by open state":
+				matcher := githubv4mock.NewQueryMatcher(qBasicNoLabels, varsOpenOnly, mockResponseOpenOnly)
+				httpClient = githubv4mock.NewMockedHTTPClient(matcher)
+			case "filter by closed state":
+				matcher := githubv4mock.NewQueryMatcher(qBasicNoLabels, varsClosedOnly, mockResponseClosedOnly)
+				httpClient = githubv4mock.NewMockedHTTPClient(matcher)
+			case "filter by labels":
+				matcher := githubv4mock.NewQueryMatcher(qWithLabels, varsWithLabels, mockResponseListAll)
+				httpClient = githubv4mock.NewMockedHTTPClient(matcher)
+			case "repository not found error":
+				matcher := githubv4mock.NewQueryMatcher(qBasicNoLabels, varsRepoNotFound, mockErrorRepoNotFound)
+				httpClient = githubv4mock.NewMockedHTTPClient(matcher)
+			}
 
-			// Create call request
-			request := createMCPRequest(tc.requestArgs)
+			gqlClient := githubv4.NewClient(httpClient)
+			_, handler := ListIssues(stubGetGQLClientFn(gqlClient), translations.NullTranslationHelper)
 
-			// Call handler
-			result, err := handler(context.Background(), request)
+			req := createMCPRequest(tc.reqParams)
+			res, err := handler(context.Background(), req)
+			text := getTextResult(t, res).Text
 
-			// Verify results
 			if tc.expectError {
-				if err != nil {
-					assert.Contains(t, err.Error(), tc.expectedErrMsg)
-				} else {
-					// For errors returned as part of the result, not as an error
-					assert.NotNil(t, result)
-					textContent := getTextResult(t, result)
-					assert.Contains(t, textContent.Text, tc.expectedErrMsg)
-				}
+				require.True(t, res.IsError)
+				assert.Contains(t, text, tc.errContains)
 				return
 			}
+			require.NoError(t, err)
 
+			// Parse the structured response with pagination info
+			var response struct {
+				Issues   []*github.Issue `json:"issues"`
+				PageInfo struct {
+					HasNextPage     bool   `json:"hasNextPage"`
+					HasPreviousPage bool   `json:"hasPreviousPage"`
+					StartCursor     string `json:"startCursor"`
+					EndCursor       string `json:"endCursor"`
+				} `json:"pageInfo"`
+				TotalCount int `json:"totalCount"`
+			}
+			err = json.Unmarshal([]byte(text), &response)
 			require.NoError(t, err)
 
-			// Parse the result and get the text content if no error
-			textContent := getTextResult(t, result)
+			assert.Len(t, response.Issues, tc.expectedCount, "Expected %d issues, got %d", tc.expectedCount, len(response.Issues))
 
-			// Unmarshal and verify the result
-			var returnedIssues []*github.Issue
-			err = json.Unmarshal([]byte(textContent.Text), &returnedIssues)
-			require.NoError(t, err)
+			// Verify order if verifyOrder function is provided
+			if tc.verifyOrder != nil {
+				tc.verifyOrder(t, response.Issues)
+			}
 
-			assert.Len(t, returnedIssues, len(tc.expectedIssues))
-			for i, issue := range returnedIssues {
-				assert.Equal(t, *tc.expectedIssues[i].Number, *issue.Number)
-				assert.Equal(t, *tc.expectedIssues[i].Title, *issue.Title)
-				assert.Equal(t, *tc.expectedIssues[i].State, *issue.State)
-				assert.Equal(t, *tc.expectedIssues[i].HTMLURL, *issue.HTMLURL)
+			// Verify that returned issues have expected structure
+			for _, issue := range response.Issues {
+				assert.NotNil(t, issue.Number, "Issue should have number")
+				assert.NotNil(t, issue.Title, "Issue should have title")
+				assert.NotNil(t, issue.State, "Issue should have state")
 			}
 		})
 	}
diff --git a/pkg/github/tools.go b/pkg/github/tools.go
index f293b4aa5..b41ba9467 100644
--- a/pkg/github/tools.go
+++ b/pkg/github/tools.go
@@ -51,7 +51,7 @@ func DefaultToolsetGroup(readOnly bool, getClient GetClientFn, getGQLClient GetG
 		AddReadTools(
 			toolsets.NewServerTool(GetIssue(getClient, t)),
 			toolsets.NewServerTool(SearchIssues(getClient, t)),
-			toolsets.NewServerTool(ListIssues(getClient, t)),
+			toolsets.NewServerTool(ListIssues(getGQLClient, t)),
 			toolsets.NewServerTool(GetIssueComments(getClient, t)),
 			toolsets.NewServerTool(ListSubIssues(getClient, t)),
 		).

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