diff --git a/libs/cli/langchain_cli/__init__.py b/libs/cli/langchain_cli/__init__.py
index b2228ec5584..63340339789 100644
--- a/libs/cli/langchain_cli/__init__.py
+++ b/libs/cli/langchain_cli/__init__.py
@@ -1,3 +1,5 @@
+"""LangChain CLI."""
+
 from langchain_cli._version import __version__
 
 __all__ = [
diff --git a/libs/cli/langchain_cli/cli.py b/libs/cli/langchain_cli/cli.py
index 15c5641e964..3080b6fc367 100644
--- a/libs/cli/langchain_cli/cli.py
+++ b/libs/cli/langchain_cli/cli.py
@@ -1,3 +1,5 @@
+"""LangChain CLI."""
+
 from typing import Annotated, Optional
 
 import typer
@@ -34,20 +36,21 @@ app.command(
 )
 
 
-def version_callback(show_version: bool) -> None:  # noqa: FBT001
+def _version_callback(*, show_version: bool) -> None:
     if show_version:
         typer.echo(f"langchain-cli {__version__}")
         raise typer.Exit
 
 
 @app.callback()
-def main(
-    version: bool = typer.Option(  # noqa: FBT001
+def _main(
+    *,
+    version: bool = typer.Option(
         False,  # noqa: FBT003
         "--version",
         "-v",
         help="Print the current CLI version.",
-        callback=version_callback,
+        callback=_version_callback,
         is_eager=True,
     ),
 ) -> None:
diff --git a/libs/cli/langchain_cli/constants.py b/libs/cli/langchain_cli/constants.py
index 7a1f7593929..dc017cc03be 100644
--- a/libs/cli/langchain_cli/constants.py
+++ b/libs/cli/langchain_cli/constants.py
@@ -1,3 +1,5 @@
+"""LangChain CLI constants."""
+
 DEFAULT_GIT_REPO = "https://github.com/langchain-ai/langchain.git"
 DEFAULT_GIT_SUBDIRECTORY = "templates"
 DEFAULT_GIT_REF = "master"
diff --git a/libs/cli/langchain_cli/dev_scripts.py b/libs/cli/langchain_cli/dev_scripts.py
index 605ea949f92..b4fab46377a 100644
--- a/libs/cli/langchain_cli/dev_scripts.py
+++ b/libs/cli/langchain_cli/dev_scripts.py
@@ -41,8 +41,10 @@ def create_demo_server(
 
 
 def create_demo_server_configurable():
+    """Create a configurable demo server."""
     return create_demo_server(config_keys=["configurable"])
 
 
 def create_demo_server_chat():
+    """Create a chat demo server."""
     return create_demo_server(playground_type="chat")
diff --git a/libs/cli/langchain_cli/namespaces/__init__.py b/libs/cli/langchain_cli/namespaces/__init__.py
index e69de29bb2d..2f025105fe7 100644
--- a/libs/cli/langchain_cli/namespaces/__init__.py
+++ b/libs/cli/langchain_cli/namespaces/__init__.py
@@ -0,0 +1 @@
+"""Namespaces."""
diff --git a/libs/cli/langchain_cli/namespaces/integration.py b/libs/cli/langchain_cli/namespaces/integration.py
index 87ce9a11caa..b577c8a65d3 100644
--- a/libs/cli/langchain_cli/namespaces/integration.py
+++ b/libs/cli/langchain_cli/namespaces/integration.py
@@ -15,6 +15,8 @@ integration_cli = typer.Typer(no_args_is_help=True, add_completion=False)
 
 
 class Replacements(TypedDict):
+    """Replacements."""
+
     __package_name__: str
     __module_name__: str
     __ModuleName__: str
diff --git a/libs/cli/langchain_cli/namespaces/migrate/__init__.py b/libs/cli/langchain_cli/namespaces/migrate/__init__.py
index e69de29bb2d..56c445feb74 100644
--- a/libs/cli/langchain_cli/namespaces/migrate/__init__.py
+++ b/libs/cli/langchain_cli/namespaces/migrate/__init__.py
@@ -0,0 +1 @@
+"""Migrations."""
diff --git a/libs/cli/langchain_cli/namespaces/migrate/generate/__init__.py b/libs/cli/langchain_cli/namespaces/migrate/generate/__init__.py
index e69de29bb2d..3c21aaf8165 100644
--- a/libs/cli/langchain_cli/namespaces/migrate/generate/__init__.py
+++ b/libs/cli/langchain_cli/namespaces/migrate/generate/__init__.py
@@ -0,0 +1 @@
+"""Generate migrations."""
diff --git a/libs/cli/langchain_cli/namespaces/migrate/generate/grit.py b/libs/cli/langchain_cli/namespaces/migrate/generate/grit.py
index 501b9f74426..14944ec459d 100644
--- a/libs/cli/langchain_cli/namespaces/migrate/generate/grit.py
+++ b/libs/cli/langchain_cli/namespaces/migrate/generate/grit.py
@@ -1,3 +1,6 @@
+"""Migration as Grit file."""
+
+
 def split_package(package: str) -> tuple[str, str]:
     """Split a package name into the containing package and the final name."""
     parts = package.split(".")
diff --git a/libs/cli/langchain_cli/namespaces/migrate/generate/utils.py b/libs/cli/langchain_cli/namespaces/migrate/generate/utils.py
index 3ea55f015c3..de923256c11 100644
--- a/libs/cli/langchain_cli/namespaces/migrate/generate/utils.py
+++ b/libs/cli/langchain_cli/namespaces/migrate/generate/utils.py
@@ -1,3 +1,5 @@
+"""Generate migrations utilities."""
+
 import ast
 import inspect
 import os
@@ -5,6 +7,8 @@ import pathlib
 from pathlib import Path
 from typing import Any, Optional
 
+from typing_extensions import override
+
 HERE = Path(__file__).parent
 # Should bring us to [root]/src
 PKGS_ROOT = HERE.parent.parent.parent.parent.parent
@@ -15,12 +19,15 @@ PARTNER_PKGS = PKGS_ROOT / "partners"
 
 
 class ImportExtractor(ast.NodeVisitor):
+    """Import extractor"""
+
     def __init__(self, *, from_package: Optional[str] = None) -> None:
         """Extract all imports from the given code, optionally filtering by package."""
         self.imports: list = []
         self.package = from_package
 
-    def visit_ImportFrom(self, node) -> None:  # noqa: N802
+    @override
+    def visit_ImportFrom(self, node) -> None:
         if node.module and (
             self.package is None or str(node.module).startswith(self.package)
         ):
@@ -143,6 +150,7 @@ def find_imports_from_package(
     *,
     from_package: Optional[str] = None,
 ) -> list[tuple[str, str]]:
+    """Find imports in code."""
     # Parse the code into an AST
     tree = ast.parse(code)
     # Create an instance of the visitor
diff --git a/libs/cli/langchain_cli/utils/__init__.py b/libs/cli/langchain_cli/utils/__init__.py
index e69de29bb2d..dc51750efa0 100644
--- a/libs/cli/langchain_cli/utils/__init__.py
+++ b/libs/cli/langchain_cli/utils/__init__.py
@@ -0,0 +1 @@
+"""Utilities."""
diff --git a/libs/cli/langchain_cli/utils/events.py b/libs/cli/langchain_cli/utils/events.py
index f7200b352ca..b3b6edaef52 100644
--- a/libs/cli/langchain_cli/utils/events.py
+++ b/libs/cli/langchain_cli/utils/events.py
@@ -1,3 +1,5 @@
+"""Events utilities."""
+
 import http.client
 import json
 from typing import Any, Optional, TypedDict
@@ -8,11 +10,18 @@ WRITE_KEY = "310apTK0HUFl4AOv"
 
 
 class EventDict(TypedDict):
+    """Event data structure for analytics tracking.
+
+    Attributes:
+        event: The name of the event.
+        properties: Optional dictionary of event properties.
+    """
     event: str
     properties: Optional[dict[str, Any]]
 
 
 def create_events(events: list[EventDict]) -> Optional[Any]:
+    """Create events."""
     try:
         data = {
             "events": [
diff --git a/libs/cli/langchain_cli/utils/find_replace.py b/libs/cli/langchain_cli/utils/find_replace.py
index b1528ef4f54..2cfacf70b37 100644
--- a/libs/cli/langchain_cli/utils/find_replace.py
+++ b/libs/cli/langchain_cli/utils/find_replace.py
@@ -1,7 +1,10 @@
+"""Find and replace text in files."""
+
 from pathlib import Path
 
 
 def find_and_replace(source: str, replacements: dict[str, str]) -> str:
+    """Find and replace text in a string."""
     rtn = source
 
     # replace keys in deterministic alphabetical order
@@ -13,6 +16,7 @@ def find_and_replace(source: str, replacements: dict[str, str]) -> str:
 
 
 def replace_file(source: Path, replacements: dict[str, str]) -> None:
+    """Replace text in a file."""
     try:
         content = source.read_text()
     except UnicodeDecodeError:
@@ -24,6 +28,7 @@ def replace_file(source: Path, replacements: dict[str, str]) -> None:
 
 
 def replace_glob(parent: Path, glob: str, replacements: dict[str, str]) -> None:
+    """Replace text in files matching a glob pattern."""
     for file in parent.glob(glob):
         if not file.is_file():
             continue
diff --git a/libs/cli/langchain_cli/utils/git.py b/libs/cli/langchain_cli/utils/git.py
index 68155d417c1..7ca46815224 100644
--- a/libs/cli/langchain_cli/utils/git.py
+++ b/libs/cli/langchain_cli/utils/git.py
@@ -1,3 +1,5 @@
+"""Git utilities."""
+
 import hashlib
 import re
 import shutil
@@ -15,6 +17,8 @@ from langchain_cli.constants import (
 
 
 class DependencySource(TypedDict):
+    """Dependency source information."""
+
     git: str
     ref: Optional[str]
     subdirectory: Optional[str]
@@ -29,6 +33,7 @@ def parse_dependency_string(
     branch: Optional[str],
     api_path: Optional[str],
 ) -> DependencySource:
+    """Parse a dependency string into a DependencySource."""
     if dep is not None and dep.startswith("git+"):
         if repo is not None or branch is not None:
             msg = (
@@ -121,6 +126,7 @@ def parse_dependencies(
     branch: list[str],
     api_path: list[str],
 ) -> list[DependencySource]:
+    """Parse dependencies."""
     num_deps = max(
         len(dependencies) if dependencies is not None else 0,
         len(repo),
@@ -168,6 +174,7 @@ def _get_repo_path(gitstring: str, ref: Optional[str], repo_dir: Path) -> Path:
 
 
 def update_repo(gitstring: str, ref: Optional[str], repo_dir: Path) -> Path:
+    """Update a git repository to the specified ref."""
     # see if path already saved
     repo_path = _get_repo_path(gitstring, ref, repo_dir)
     if repo_path.exists():
diff --git a/libs/cli/langchain_cli/utils/github.py b/libs/cli/langchain_cli/utils/github.py
index 335de0062d2..2feabea7ef9 100644
--- a/libs/cli/langchain_cli/utils/github.py
+++ b/libs/cli/langchain_cli/utils/github.py
@@ -1,9 +1,12 @@
+"""GitHub utilities."""
+
 import http.client
 import json
 from typing import Optional
 
 
 def list_packages(*, contains: Optional[str] = None) -> list[str]:
+    """List all packages in the langchain repository templates directory."""
     conn = http.client.HTTPSConnection("api.github.com")
     try:
         headers = {
diff --git a/libs/cli/langchain_cli/utils/packages.py b/libs/cli/langchain_cli/utils/packages.py
index f45caec1ff2..4d634e47792 100644
--- a/libs/cli/langchain_cli/utils/packages.py
+++ b/libs/cli/langchain_cli/utils/packages.py
@@ -1,3 +1,5 @@
+"""Packages utilities."""
+
 from pathlib import Path
 from typing import Any, Optional, TypedDict
 
@@ -5,6 +7,7 @@ from tomlkit import load
 
 
 def get_package_root(cwd: Optional[Path] = None) -> Path:
+    """Get package root directory."""
     # traverse path for routes to host (any directory holding a pyproject.toml file)
     package_root = Path.cwd() if cwd is None else cwd
     visited: set[Path] = set()
@@ -35,6 +38,7 @@ class LangServeExport(TypedDict):
 
 
 def get_langserve_export(filepath: Path) -> LangServeExport:
+    """Get LangServe export information from a pyproject.toml file."""
     with open(filepath) as f:
         data: dict[str, Any] = load(f)
     try:
diff --git a/libs/cli/langchain_cli/utils/pyproject.py b/libs/cli/langchain_cli/utils/pyproject.py
index 237676d636f..732abd0ec76 100644
--- a/libs/cli/langchain_cli/utils/pyproject.py
+++ b/libs/cli/langchain_cli/utils/pyproject.py
@@ -1,3 +1,5 @@
+"""Pyproject.toml utilities."""
+
 import contextlib
 from collections.abc import Iterable
 from pathlib import Path
diff --git a/libs/cli/pyproject.toml b/libs/cli/pyproject.toml
index 4ce72a12f2d..8b0c1494973 100644
--- a/libs/cli/pyproject.toml
+++ b/libs/cli/pyproject.toml
@@ -55,7 +55,7 @@ select = [
     "ASYNC",  # flake8-async
     "C4",     # flake8-comprehensions
     "COM",    # flake8-commas
-    "D",      # pydocstyle
+    "D1",      # pydocstyle
     "E",      # pycodestyle error
     "EM",     # flake8-errmsg
     "F",      # pyflakes
@@ -88,18 +88,14 @@ select = [
     "YTT",    # flake8-2020
 ]
 ignore = [
-    "D100",    # pydocstyle: Missing docstring in public module
-    "D101",    # pydocstyle: Missing docstring in public class
-    "D102",    # pydocstyle: Missing docstring in public method
-    "D103",    # pydocstyle: Missing docstring in public function
-    "D104",    # pydocstyle: Missing docstring in public package
-    "D105",    # pydocstyle: Missing docstring in magic method
-    "D107",    # pydocstyle: Missing docstring in __init__
     "D407",    # pydocstyle: Missing-dashed-underline-after-section
     "COM812",  # Messes with the formatter
 ]
 pyupgrade.keep-runtime-typing = true
 
+[tool.ruff.lint.per-file-ignores]
+"tests/**" = [ "D1"]
+
 [tool.mypy]
 exclude = [
     "langchain_cli/integration_template",
diff --git a/libs/cli/scripts/__init__.py b/libs/cli/scripts/__init__.py
index e69de29bb2d..a9a18d78f25 100644
--- a/libs/cli/scripts/__init__.py
+++ b/libs/cli/scripts/__init__.py
@@ -0,0 +1 @@
+"""Scripts."""
diff --git a/libs/cli/scripts/generate_migrations.py b/libs/cli/scripts/generate_migrations.py
index f5f915dafbc..01dc652a633 100644
--- a/libs/cli/scripts/generate_migrations.py
+++ b/libs/cli/scripts/generate_migrations.py
@@ -78,6 +78,7 @@ def generic(
 
 
 def handle_partner(pkg: str, output: Optional[str] = None) -> None:
+    """Handle partner package migrations."""
     migrations = get_migrations_for_partner_package(pkg)
     # Run with python 3.9+
     name = pkg.removeprefix("langchain_")