cli[patch]: release 0.0.22rc0, chat playground (langchain-ai#19614)

libs/cli/langchain_cli/cli.py

@@ -8,7 +8,7 @@
 from langchain_cli.namespaces import template as template_namespace
 from langchain_cli.utils.packages import get_langserve_export, get_package_root
 
-__version__ = "0.0.20"
+__version__ = "0.0.22rc0"
 
 app = typer.Typer(no_args_is_help=True, add_completion=False)
 app.add_typer(

libs/cli/langchain_cli/dev_scripts.py

@@ -13,6 +13,7 @@
 def create_demo_server(
     *,
     config_keys: Sequence[str] = (),
+    playground_type: str = "default",
 ):
     """
     Creates a demo server for the current template.
@@ -30,6 +31,7 @@ def create_demo_server(
             app,
             chain,
             config_keys=config_keys,
+            playground_type=playground_type,
         )
     except KeyError as e:
         raise KeyError("Missing fields from pyproject.toml") from e
@@ -41,3 +43,7 @@ def create_demo_server(
 
 def create_demo_server_configurable():
     return create_demo_server(config_keys=["configurable"])
+
+
+def create_demo_server_chat():
+    return create_demo_server(playground_type="chat")

libs/cli/langchain_cli/namespaces/template.py

@@ -95,12 +95,19 @@ def serve(
         Optional[str], typer.Option(help="The host to run the server on")
     ] = None,
     configurable: Annotated[
-        bool,
+        Optional[bool],
         typer.Option(
             "--configurable/--no-configurable",
             help="Whether to include a configurable route",
         ),
-    ] = True,
+    ] = None,  # defaults to `not chat_playground`
+    chat_playground: Annotated[
+        bool,
+        typer.Option(
+            "--chat-playground/--no-chat-playground",
+            help="Whether to include a chat playground route",
+        ),
+    ] = False,
 ) -> None:
     """
     Starts a demo app for this template.
@@ -115,9 +122,13 @@ def serve(
     host_str = host if host is not None else "127.0.0.1"
 
     script = (
-        "langchain_cli.dev_scripts:create_demo_server"
-        if not configurable
-        else "langchain_cli.dev_scripts:create_demo_server_configurable"
+        "langchain_cli.dev_scripts:create_demo_server_chat_playground"
+        if chat_playground
+        else (
+            "langchain_cli.dev_scripts:create_demo_server_configurable"
+            if configurable
+            else "langchain_cli.dev_scripts:create_demo_server"
+        )
     )
 
     import uvicorn