diff --git a/README.md b/README.md
index b4c55e1..08cd1ff 100644
--- a/README.md
+++ b/README.md
@@ -151,6 +151,10 @@ gitlink-cli repo +list
 # View repository info
 gitlink-cli repo +info --owner Gitlink --repo forgeplus
 
+# List repository files at root or a directory
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --ref master
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --path src --ref main
+
 # Create a repository
 gitlink-cli repo +create -n my-project -d "Project description"
 
diff --git a/README.zh-CN.md b/README.zh-CN.md
index f426948..e61b56f 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -162,6 +162,10 @@ gitlink-cli repo +list
 # 查看仓库信息
 gitlink-cli repo +info --owner Gitlink --repo forgeplus
 
+# 列出仓库根目录或指定目录文件
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --ref master
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --path src --ref main
+
 # 创建仓库
 gitlink-cli repo +create -n my-project -d "项目描述"
 
diff --git a/doc/design.md b/doc/design.md
index d25295b..3a0e606 100644
--- a/doc/design.md
+++ b/doc/design.md
@@ -40,7 +40,7 @@ gitlink-cli/
 │   ├── common/
 │   │   ├── types.go          # Shortcut / Flag / RuntimeContext 定义
 │   │   └── runner.go         # CallAPI / PaginateAll / ResolveOwnerRepo
-│   ├── repo/                 # repo +create / +clone / +fork / +list / +info
+│   ├── repo/                 # repo +create / +clone / +fork / +list / +info / +tree
 │   ├── issue/                # issue +list / +create / +view / +close / +comment
 │   ├── pr/                   # pr +list / +create / +view / +merge / +review
 │   ├── release/              # release +list / +create / +download
@@ -78,7 +78,7 @@ gitlink-cli/
 
 | 领域 | Shortcuts | 数量 |
 |------|-----------|------|
-| repo | `+create` `+clone` `+fork` `+list` `+info` `+delete` `+settings` | 7 |
+| repo | `+create` `+clone` `+fork` `+list` `+info` `+tree` `+delete` `+settings` | 8 |
 | issue | `+list` `+create` `+view` `+update` `+close` `+comment` `+assign` `+label` | 8 |
 | pr | `+list` `+create` `+view` `+merge` `+close` `+review` `+files` `+diff` | 8 |
 | release | `+list` `+create` `+view` `+delete` `+download` | 5 |
diff --git a/shortcuts/repo/repo.go b/shortcuts/repo/repo.go
index 75091a4..4fe4e1e 100644
--- a/shortcuts/repo/repo.go
+++ b/shortcuts/repo/repo.go
@@ -52,6 +52,31 @@ func Shortcuts() []*common.Shortcut {
 				return ctx.Output(env)
 			},
 		},
+		{
+			Name:        "tree",
+			Description: "List repository files and directories",
+			Flags: []common.Flag{
+				{Name: "path", Short: "p", Usage: "Directory path to list (default: repository root)"},
+				{Name: "ref", Short: "r", Usage: "Branch, tag, or commit ref", Default: "master"},
+			},
+			Run: func(ctx *common.RuntimeContext) error {
+				if err := ctx.ResolveOwnerRepo(); err != nil {
+					return err
+				}
+				q := url.Values{}
+				ref := ctx.Arg("ref")
+				if ref == "" {
+					ref = "master"
+				}
+				q.Set("filepath", ctx.Arg("path"))
+				q.Set("ref", ref)
+				env, err := ctx.CallAPIWithQuery("GET", ctx.RepoPath()+"/sub_entries", q)
+				if err != nil {
+					return err
+				}
+				return ctx.Output(env)
+			},
+		},
 		{
 			Name:        "create",
 			Description: "Create a new repository",
diff --git a/shortcuts/repo/repo_test.go b/shortcuts/repo/repo_test.go
new file mode 100644
index 0000000..a139fc7
--- /dev/null
+++ b/shortcuts/repo/repo_test.go
@@ -0,0 +1,111 @@
+package repo
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gitlink-org/gitlink-cli/internal/client"
+	"github.com/gitlink-org/gitlink-cli/shortcuts/common"
+)
+
+func TestRepoTreeListsRootOnDefaultRef(t *testing.T) {
+	var filepath string
+	var ref string
+	server := newRepoTestServer(t, func(w http.ResponseWriter, r *http.Request) {
+		assertRequest(t, r, "GET", "/owner/repo/sub_entries.json")
+		filepath = r.URL.Query().Get("filepath")
+		ref = r.URL.Query().Get("ref")
+		writeJSON(t, w, map[string]interface{}{
+			"entries": []map[string]interface{}{
+				{"name": "README.md", "type": "file"},
+			},
+		})
+	})
+	defer server.Close()
+
+	if err := runRepoShortcut(t, server, "tree", map[string]string{}); err != nil {
+		t.Fatalf("tree shortcut failed: %v", err)
+	}
+
+	assertEqual(t, filepath, "")
+	assertEqual(t, ref, "master")
+}
+
+func TestRepoTreeUsesPathAndRef(t *testing.T) {
+	var filepath string
+	var ref string
+	server := newRepoTestServer(t, func(w http.ResponseWriter, r *http.Request) {
+		assertRequest(t, r, "GET", "/owner/repo/sub_entries.json")
+		filepath = r.URL.Query().Get("filepath")
+		ref = r.URL.Query().Get("ref")
+		writeJSON(t, w, map[string]interface{}{
+			"entries": []map[string]interface{}{
+				{"name": "main.go", "type": "file"},
+			},
+		})
+	})
+	defer server.Close()
+
+	if err := runRepoShortcut(t, server, "tree", map[string]string{"path": "cmd", "ref": "main"}); err != nil {
+		t.Fatalf("tree shortcut failed: %v", err)
+	}
+
+	assertEqual(t, filepath, "cmd")
+	assertEqual(t, ref, "main")
+}
+
+func runRepoShortcut(t *testing.T, server *httptest.Server, name string, args map[string]string) error {
+	t.Helper()
+	shortcut := findRepoShortcut(t, name)
+	ctx := &common.RuntimeContext{
+		Client: &client.Client{
+			HTTP:    server.Client(),
+			BaseURL: server.URL,
+		},
+		Owner:  "owner",
+		Repo:   "repo",
+		Format: "json",
+		Args:   args,
+	}
+	return shortcut.Run(ctx)
+}
+
+func findRepoShortcut(t *testing.T, name string) *common.Shortcut {
+	t.Helper()
+	for _, shortcut := range Shortcuts() {
+		if shortcut.Name == name {
+			return shortcut
+		}
+	}
+	t.Fatalf("shortcut %q not found", name)
+	return nil
+}
+
+func newRepoTestServer(t *testing.T, handler http.HandlerFunc) *httptest.Server {
+	t.Helper()
+	return httptest.NewServer(handler)
+}
+
+func writeJSON(t *testing.T, w http.ResponseWriter, payload interface{}) {
+	t.Helper()
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(payload); err != nil {
+		t.Fatalf("failed to write response: %v", err)
+	}
+}
+
+func assertRequest(t *testing.T, r *http.Request, method, path string) {
+	t.Helper()
+	if r.Method != method || r.URL.Path != path {
+		t.Fatalf("got request %s %s, want %s %s", r.Method, r.URL.Path, method, path)
+	}
+}
+
+func assertEqual(t *testing.T, got interface{}, want interface{}) {
+	t.Helper()
+	if got != want {
+		t.Fatalf("got %v (%T), want %v (%T)", got, got, want, want)
+	}
+}
diff --git a/skills/gitlink-repo/SKILL.md b/skills/gitlink-repo/SKILL.md
index 9fabb8e..abae300 100644
--- a/skills/gitlink-repo/SKILL.md
+++ b/skills/gitlink-repo/SKILL.md
@@ -22,6 +22,7 @@ metadata:
 |----------|------|----------|
 | `repo +list` | 仓库列表 | 否（公开项目） |
 | `repo +info` | 仓库详情 | 否（公开项目） |
+| `repo +tree` | 仓库文件树 | 否（公开项目） |
 | `repo +create` | 创建仓库 | 是 |
 | `repo +fork` | Fork 仓库 | 是 |
 | `repo +delete` | 删除仓库 | 是 |
@@ -39,6 +40,10 @@ gitlink-cli repo +info
 # 列出用户的仓库
 gitlink-cli repo +list --user zhangsan
 
+# 列出仓库根目录或指定目录
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --ref master
+gitlink-cli repo +tree --owner Gitlink --repo forgeplus --path src --ref main
+
 # 创建仓库
 gitlink-cli repo +create --name my-project --description "项目描述"
 
diff --git a/skills/gitlink-repo/references/gitlink-repo-tree.md b/skills/gitlink-repo/references/gitlink-repo-tree.md
new file mode 100644
index 0000000..fe8efb4
--- /dev/null
+++ b/skills/gitlink-repo/references/gitlink-repo-tree.md
@@ -0,0 +1,42 @@
+# repo +tree
+
+> **前置条件：** 先阅读 [`../gitlink-shared/SKILL.md`](../../gitlink-shared/SKILL.md) 了解认证、全局参数和安全规则。
+
+列出 GitLink 仓库根目录或指定目录下的文件和子目录。该命令封装 `sub_entries` API，适合项目结构检查、文档检查、科研复现性分析和 Agent 自动化报告。
+
+## 命令
+
+```bash
+# 列出仓库根目录
+gitlink-cli repo +tree --owner someone --repo myrepo
+
+# 指定分支、标签或提交
+gitlink-cli repo +tree --owner someone --repo myrepo --ref main
+
+# 列出指定目录
+gitlink-cli repo +tree --owner someone --repo myrepo --path src --ref main
+
+# 输出为 JSON
+gitlink-cli repo +tree --owner someone --repo myrepo --format json
+```
+
+## 参数
+
+| 参数 | 必填 | 说明 |
+|------|------|------|
+| `--path, -p` | 否 | 要列出的目录路径，默认为仓库根目录 |
+| `--ref, -r` | 否 | 分支、标签或提交引用，默认 `master` |
+| `--owner` | 否 | 全局参数 - 仓库所有者，可从 git remote 自动解析 |
+| `--repo` | 否 | 全局参数 - 仓库名称，可从 git remote 自动解析 |
+| `--format` | 否 | 输出格式：`json`/`table`/`yaml` |
+| `--debug` | 否 | 启用调试输出 |
+
+## Notes
+
+- GitLink 仓库常见默认分支是 `master`，镜像仓库也可能使用 `main`。如果根目录返回不存在，请显式指定 `--ref main` 或从 `repo +info` 的 `default_branch` 字段确认。
+- AI Agent 场景建议使用 `--format json`，便于读取 `data.entries` 中的文件名、路径、类型和 SHA。
+
+## References
+
+- [gitlink-repo](../SKILL.md)
+- [gitlink-shared](../../gitlink-shared/SKILL.md)