feat: add basic code scanning methods

README.md

@@ -166,6 +166,21 @@ and set it as the GITHUB_PERSONAL_ACCESS_TOKEN environment variable.
   - `page`: Page number (number, optional)
   - `per_page`: Results per page (number, optional)
 
+### Code Scanning
+
+- **get_code_scanning_alert** - Get a code scanning alert
+
+  - `owner`: Repository owner (string, required)
+  - `repo`: Repository name (string, required)
+  - `alert_number`: Alert number (number, required)
+
+- **list_code_scanning_alerts** - List code scanning alerts for a repository
+  - `owner`: Repository owner (string, required)
+  - `repo`: Repository name (string, required)
+  - `ref`: Git reference (string, optional)
+  - `state`: Alert state (string, optional)
+  - `severity`: Alert severity (string, optional)
+
 ## Standard input/output server
 
 ```sh

pkg/github/code_scanning.go

@@ -0,0 +1,108 @@
+package github
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+
+	"github.com/google/go-github/v69/github"
+	"github.com/mark3labs/mcp-go/mcp"
+	"github.com/mark3labs/mcp-go/server"
+)
+
+func getCodeScanningAlert(client *github.Client) (tool mcp.Tool, handler server.ToolHandlerFunc) {
+	return mcp.NewTool("get_code_scanning_alert",
+			mcp.WithDescription("Get details of a specific code scanning alert in a GitHub repository."),
+			mcp.WithString("owner",
+				mcp.Required(),
+				mcp.Description("The owner of the repository."),
+			),
+			mcp.WithString("repo",
+				mcp.Required(),
+				mcp.Description("The name of the repository."),
+			),
+			mcp.WithNumber("alert_number",
+				mcp.Required(),
+				mcp.Description("The number of the alert."),
+			),
+		),
+		func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
+			owner, _ := request.Params.Arguments["owner"].(string)
+			repo, _ := request.Params.Arguments["repo"].(string)
+			alertNumber, _ := request.Params.Arguments["alert_number"].(float64)
+
+			alert, resp, err := client.CodeScanning.GetAlert(ctx, owner, repo, int64(alertNumber))
+			if err != nil {
+				return nil, fmt.Errorf("failed to get alert: %w", err)
+			}
+			defer func() { _ = resp.Body.Close() }()
+
+			if resp.StatusCode != 200 {
+				body, err := io.ReadAll(resp.Body)
+				if err != nil {
+					return nil, fmt.Errorf("failed to read response body: %w", err)
+				}
+				return mcp.NewToolResultError(fmt.Sprintf("failed to get alert: %s", string(body))), nil
+			}
+
+			r, err := json.Marshal(alert)
+			if err != nil {
+				return nil, fmt.Errorf("failed to marshal alert: %w", err)
+			}
+
+			return mcp.NewToolResultText(string(r)), nil
+		}
+}
+
+func listCodeScanningAlerts(client *github.Client) (tool mcp.Tool, handler server.ToolHandlerFunc) {
+	return mcp.NewTool("list_code_scanning_alerts",
+			mcp.WithDescription("List code scanning alerts in a GitHub repository."),
+			mcp.WithString("owner",
+				mcp.Required(),
+				mcp.Description("The owner of the repository."),
+			),
+			mcp.WithString("repo",
+				mcp.Required(),
+				mcp.Description("The name of the repository."),
+			),
+			mcp.WithString("ref",
+				mcp.Description("The Git reference for the results you want to list."),
+			),
+			mcp.WithString("state",
+				mcp.Description("State of the code scanning alerts to list. Set to closed to list only closed code scanning alerts. Default: open"),
+				mcp.DefaultString("open"),
+			),
+			mcp.WithString("severity",
+				mcp.Description("Only code scanning alerts with this severity will be returned. Possible values are: critical, high, medium, low, warning, note, error."),
+			),
+		),
+		func(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {
+			owner, _ := request.Params.Arguments["owner"].(string)
+			repo, _ := request.Params.Arguments["repo"].(string)
+			ref, _ := request.Params.Arguments["ref"].(string)
+			state, _ := request.Params.Arguments["state"].(string)
+			severity, _ := request.Params.Arguments["severity"].(string)
+
+			alerts, resp, err := client.CodeScanning.ListAlertsForRepo(ctx, owner, repo, &github.AlertListOptions{Ref: ref, State: state, Severity: severity})
+			if err != nil {
+				return nil, fmt.Errorf("failed to list alerts: %w", err)
+			}
+			defer func() { _ = resp.Body.Close() }()
+
+			if resp.StatusCode != 200 {
+				body, err := io.ReadAll(resp.Body)
+				if err != nil {
+					return nil, fmt.Errorf("failed to read response body: %w", err)
+				}
+				return mcp.NewToolResultError(fmt.Sprintf("failed to list alerts: %s", string(body))), nil
+			}
+
+			r, err := json.Marshal(alerts)
+			if err != nil {
+				return nil, fmt.Errorf("failed to marshal alerts: %w", err)
+			}
+
+			return mcp.NewToolResultText(string(r)), nil
+		}
+}

pkg/github/server.go

@@ -51,6 +51,10 @@ func NewServer(client *github.Client) *server.MCPServer {
 	// Add GitHub tools - Users
 	s.AddTool(getMe(client))
 
+	// Add GitHub tools - Code Scanning
+	s.AddTool(getCodeScanningAlert(client))
+	s.AddTool(listCodeScanningAlerts(client))
+
 	return s
 }