diff --git a/src/cli/main.py b/src/cli/main.py
index 4944172..b161211 100644
--- a/src/cli/main.py
+++ b/src/cli/main.py
@@ -72,7 +72,8 @@ def search(query: str, top_k: int = 10):
 @app.command()
 def serve(port: int = 8000):
     """启动 HTTP 服务."""
-    typer.echo(f"🚀 启动服务: http://0.0.0.0:{port}")
+    typer.echo(f"🚀 启动服务: http://localhost:{port}")
+    typer.echo(f"📖 API 文档: http://localhost:{port}/docs")
     uvicorn.run("src.server.app:app", host="0.0.0.0", port=port, reload=False)
 
 
diff --git a/src/server/app.py b/src/server/app.py
index 338fcce..09ecffc 100644
--- a/src/server/app.py
+++ b/src/server/app.py
@@ -84,6 +84,13 @@ app = FastAPI(
 )
 
 
+@app.get("/")
+def root():
+    """根路径重定向到 API 文档."""
+    from fastapi.responses import RedirectResponse
+    return RedirectResponse(url="/docs")
+
+
 @app.get("/api/v1/health")
 def health():
     return {"status": "ok"}