diff --git a/cnb-builder-shim/internal/devsandbox/vcs/types.go b/cnb-builder-shim/internal/devsandbox/vcs/types.go
index b4b0127c3..3c005083a 100644
--- a/cnb-builder-shim/internal/devsandbox/vcs/types.go
+++ b/cnb-builder-shim/internal/devsandbox/vcs/types.go
@@ -20,6 +20,7 @@
 package vcs
 
 import (
+	"path"
 	"slices"
 	"strings"
 )
@@ -49,15 +50,8 @@ type File struct {
 // Files 文件列表
 type Files []File
 
-// DirTree 目录树
-type DirTree struct {
-	Name  string     `json:"name"`
-	Dirs  []*DirTree `json:"dirs"`
-	Files Files      `json:"files"`
-}
-
 // AsTree 转换成目录树形式
-func (files Files) AsTree() DirTree {
+func (files Files) AsTree() *DirTree {
 	// 按照文件路径排序
 	slices.SortFunc(files, func(a, b File) int {
 		return strings.Compare(a.Path, b.Path)
@@ -90,5 +84,32 @@ func (files Files) AsTree() DirTree {
 		f.Path = parts[len(parts)-1]
 		cur.Files = append(cur.Files, f)
 	}
-	return root
+
+	// 压缩目录树，避免过多的嵌套层级
+	return root.Compress()
+}
+
+// DirTree 目录树
+type DirTree struct {
+	Name  string     `json:"name"`
+	Dirs  []*DirTree `json:"dirs"`
+	Files Files      `json:"files"`
+}
+
+// Compress 压缩
+func (t *DirTree) Compress() *DirTree {
+	// 根目录不需要压缩，只有子目录需要
+	for idx, dt := range t.Dirs {
+		t.Dirs[idx] = dt.compress(dt.Name)
+	}
+	return t
+}
+
+func (t *DirTree) compress(prefix string) *DirTree {
+	if len(t.Files) == 0 && len(t.Dirs) == 1 {
+		subDir := t.Dirs[0]
+		subDir.Name = path.Join(prefix, subDir.Name)
+		return subDir.compress(subDir.Name)
+	}
+	return t
 }
diff --git a/cnb-builder-shim/internal/devsandbox/vcs/types_test.go b/cnb-builder-shim/internal/devsandbox/vcs/types_test.go
index 2701a1d8f..9733d4053 100644
--- a/cnb-builder-shim/internal/devsandbox/vcs/types_test.go
+++ b/cnb-builder-shim/internal/devsandbox/vcs/types_test.go
@@ -38,7 +38,7 @@ var _ = Describe("Test Types", func() {
 				{Action: FileActionModified, Path: "docs/example.txt"},
 			}
 
-			excepted := DirTree{
+			excepted := &DirTree{
 				Name: "/",
 				Dirs: []*DirTree{
 					{
@@ -79,5 +79,69 @@ var _ = Describe("Test Types", func() {
 			}
 			Expect(files.AsTree()).To(Equal(excepted))
 		})
+
+		It("AsTree with compress", func() {
+			files := Files{
+				{Action: FileActionAdded, Path: "webfe/static/example.css"},
+				{Action: FileActionAdded, Path: "webfe/static/example.js"},
+				{Action: FileActionDeleted, Path: "api/main.py"},
+				{Action: FileActionDeleted, Path: "api/utils/stringx.py"},
+				{Action: FileActionModified, Path: "backend/cmd/main.go"},
+				{Action: FileActionModified, Path: "backend/pkg/types.go"},
+				{Action: FileActionModified, Path: "docs/common/example.txt"},
+				{Action: FileActionDeleted, Path: "mako/templates/mako/about_us.mako"},
+			}
+
+			excepted := &DirTree{
+				Name: "/",
+				Dirs: []*DirTree{
+					{
+						Name: "api",
+						Dirs: []*DirTree{
+							{
+								Name: "utils", Files: Files{
+									{Action: FileActionDeleted, Path: "stringx.py"},
+								},
+							},
+						},
+						Files: Files{
+							{Action: FileActionDeleted, Path: "main.py"},
+						},
+					},
+					{
+						Name: "backend", Dirs: []*DirTree{
+							{
+								Name: "cmd", Files: Files{
+									{Action: FileActionModified, Path: "main.go"},
+								},
+							},
+							{
+								Name: "pkg", Files: Files{
+									{Action: FileActionModified, Path: "types.go"},
+								},
+							},
+						},
+					},
+					{
+						Name: "docs/common", Files: Files{
+							{Action: FileActionModified, Path: "example.txt"},
+						},
+					},
+					{
+						Name: "mako/templates/mako",
+						Files: Files{
+							{Action: FileActionDeleted, Path: "about_us.mako"},
+						},
+					},
+					{
+						Name: "webfe/static", Files: Files{
+							{Action: FileActionAdded, Path: "example.css"},
+							{Action: FileActionAdded, Path: "example.js"},
+						},
+					},
+				},
+			}
+			Expect(files.AsTree()).To(Equal(excepted))
+		})
 	})
 })
diff --git a/cnb-builder-shim/internal/devsandbox/vcs/vcs.go b/cnb-builder-shim/internal/devsandbox/vcs/vcs.go
index 416284ff1..3e4a10839 100644
--- a/cnb-builder-shim/internal/devsandbox/vcs/vcs.go
+++ b/cnb-builder-shim/internal/devsandbox/vcs/vcs.go
@@ -114,6 +114,12 @@ func (v *VersionController) Diff() (Files, error) {
 	return files, nil
 }
 
+// Commit 提交变更
+func (v *VersionController) Commit(message string) error {
+	_, err := v.runGitCommand("commit", "-m", message)
+	return err
+}
+
 // 执行 Git 命令
 func (v *VersionController) runGitCommand(args ...string) (string, error) {
 	cmd := exec.Command("git", args...)
diff --git a/cnb-builder-shim/internal/devsandbox/webserver/server.go b/cnb-builder-shim/internal/devsandbox/webserver/server.go
index 8e2dd7b79..f75ffe06c 100644
--- a/cnb-builder-shim/internal/devsandbox/webserver/server.go
+++ b/cnb-builder-shim/internal/devsandbox/webserver/server.go
@@ -95,6 +95,7 @@ func New(lg *logr.Logger) (*WebServer, error) {
 	r.GET("/processes/status", ProcessStatusHandler())
 	r.GET("/processes/list", ProcessListHandler())
 	r.GET("/diffs", DiffsHandler())
+	r.GET("/commit", CommitHandler())
 
 	return s, nil
 }
@@ -329,6 +330,36 @@ func DiffsHandler() gin.HandlerFunc {
 	}
 }
 
+// CommitHandler 提交文件变更
+func CommitHandler() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// 由于目前 HTTP 附带文件的源码初始化逻辑不同，暂时不支持
+		// TODO 后续重构时需要统一
+		if config.G.SourceCode.FetchMethod != config.BK_REPO {
+			c.JSON(
+				http.StatusBadRequest,
+				gin.H{"message": fmt.Sprintf("unsupported fetch method: %s", config.G.SourceCode.FetchMethod)},
+			)
+			return
+		}
+
+		commitMsg := c.Query("message")
+		if commitMsg == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"message": "commit message is empty"})
+			return
+		}
+		// 提交变更
+		if err := vcs.New().Commit(commitMsg); err != nil {
+			c.JSON(
+				http.StatusInternalServerError,
+				gin.H{"message": fmt.Sprintf("failed to commit files: %s", err)},
+			)
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"message": "ok"})
+	}
+}
+
 // HealthzHandler ...
 func HealthzHandler() gin.HandlerFunc {
 	return func(c *gin.Context) {