diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
deleted file mode 100644
index 6f1eaeb91..000000000
--- a/.github/.OwlBot.lock.yaml
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright 2025 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-docker:
-  image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:ecf409a43d8b157fb83c403de4d83e3da7d88e423044410c0e2434bf776221d1
-# created: 2025-04-10T16:21:41.67162455Z
diff --git a/.github/.OwlBot.yaml b/.github/.OwlBot.yaml
deleted file mode 100644
index 58377caf6..000000000
--- a/.github/.OwlBot.yaml
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2021 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-docker:
-  image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-
-deep-remove-regex:
-  - /owl-bot-staging
-
-deep-copy-regex:
-  - source: /google/logging/(v.*)/.*-py/(.*)
-    dest: /owl-bot-staging/$1/$2
-
-begin-after-commit-hash: 130ce904e5d546c312943d10f48799590f9c0f66
-
diff --git a/.github/auto-approve.yml b/.github/auto-approve.yml
deleted file mode 100644
index 311ebbb85..000000000
--- a/.github/auto-approve.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-# https://github.com/googleapis/repo-automation-bots/tree/main/packages/auto-approve
-processes:
-  - "OwlBotTemplateChanges"
diff --git a/.github/release-please.yml b/.github/release-please.yml
deleted file mode 100644
index dbd2cc9de..000000000
--- a/.github/release-please.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-releaseType: python
-handleGHRelease: true
-manifest: true
-# NOTE: this section is generated by synthtool.languages.python
-# See https://github.com/googleapis/synthtool/blob/master/synthtool/languages/python.py
-branches:
-- branch: v2
-  handleGHRelease: true
-  releaseType: python
-- branch: v1
-  handleGHRelease: true
-  releaseType: python
-- branch: v0
-  handleGHRelease: true
-  releaseType: python
diff --git a/.github/release-trigger.yml b/.github/release-trigger.yml
deleted file mode 100644
index d47d146a9..000000000
--- a/.github/release-trigger.yml
+++ /dev/null
@@ -1,2 +0,0 @@
-enabled: true
-multiScmName: python-logging
diff --git a/.github/sync-repo-settings.yaml b/.github/sync-repo-settings.yaml
deleted file mode 100644
index 439a0bcb7..000000000
--- a/.github/sync-repo-settings.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-# https://github.com/googleapis/repo-automation-bots/tree/main/packages/sync-repo-settings
-# Rules for main branch protection
-branchProtectionRules:
-# Identifies the protection rule pattern. Name of the branch to be protected.
-# Defaults to `main`
-- pattern: main
-  requiresCodeOwnerReviews: true
-  requiresStrictStatusChecks: true
-  requiredStatusCheckContexts:
-    - 'Kokoro'
-    - 'cla/google'
-    - 'Samples - Lint'
-    - 'Samples - Python 3.7'
-    - 'Samples - Python 3.8'
-    - 'Samples - Python 3.9'
-    - 'Samples - Python 3.10'
-    - 'Samples - Python 3.11'
-    - 'Samples - Python 3.12'
diff --git a/.librarian/generator-input/.repo-metadata.json b/.librarian/generator-input/.repo-metadata.json
new file mode 100644
index 000000000..83c212332
--- /dev/null
+++ b/.librarian/generator-input/.repo-metadata.json
@@ -0,0 +1,17 @@
+{
+    "name": "logging",
+    "name_pretty": "Cloud Logging",
+    "product_documentation": "https://cloud.google.com/logging/docs",
+    "client_documentation": "https://cloud.google.com/python/docs/reference/logging/latest",
+    "issue_tracker": "https://issuetracker.google.com/savedsearches/559764",
+    "release_level": "stable",
+    "language": "python",
+    "library_type": "GAPIC_COMBO",
+    "repo": "googleapis/python-logging",
+    "distribution_name": "google-cloud-logging",
+    "api_id": "logging.googleapis.com",
+    "codeowner_team": "@googleapis/api-logging @googleapis/api-logging-partners",
+    "default_version": "v2",
+    "api_shortname": "logging",
+    "api_description": "allows you to store, search, analyze, monitor, and alert on log data and events from Google Cloud and Amazon Web Services. Using the BindPlane service, you can also collect this data from over 150 common application components, on-premises systems, and hybrid cloud systems. BindPlane is included with your Google Cloud project at no additional cost."
+}
diff --git a/owlbot.py b/.librarian/generator-input/librarian.py
similarity index 88%
rename from owlbot.py
rename to .librarian/generator-input/librarian.py
index 04aa8926a..bf358a4b0 100644
--- a/owlbot.py
+++ b/.librarian/generator-input/librarian.py
@@ -65,12 +65,12 @@ def place_before(path, text, *before_text, escape=None):
     )
 
     s.move([library], excludes=[
-            "**/gapic_version.py",
             "setup.py",
             "testing/constraints*.txt",
             "README.rst",
             "google/cloud/logging/__init__.py",  # generated types are hidden from users
             "google/cloud/logging_v2/__init__.py",
+            "docs/conf.py",
             "docs/index.rst",
             "docs/logging_v2",  # Don't include gapic library docs. Users should use the hand-written layer instead
             "docs/multiprocessing.rst",
@@ -104,15 +104,14 @@ def place_before(path, text, *before_text, escape=None):
 s.move(templated_files, 
     excludes=[
         "docs/index.rst",
-        ".github/release-please.yml",
+        ".github/**",
+        ".kokoro/**",
         ".coveragerc",
         "docs/multiprocessing.rst",
-        ".github/workflows", # exclude gh actions as credentials are needed for tests
-        ".github/auto-label.yaml",
         "README.rst", # This repo has a customized README
-        "noxfile.py",
     ],
 )
+
 # adjust .trampolinerc for environment tests
 s.replace(".trampolinerc", "required_envvars[^\)]*\)", "required_envvars+=()")
 s.replace(
@@ -242,21 +241,3 @@ def place_before(path, text, *before_text, escape=None):
         s.replace(sample_files, text, replacement)
 
 s.shell.run(["nox", "-s", "blacken"], hide_output=False)
-s.shell.run(["nox", "-s", "blacken"], cwd="samples/snippets", hide_output=False)
-
-# --------------------------------------------------------------------------
-# Modify test configs
-# --------------------------------------------------------------------------
-
-# add shared environment variables to test configs
-tracked_subdirs = ["continuous", "presubmit", "samples"]
-for subdir in tracked_subdirs:
-    for path, subdirs, files in os.walk(f".kokoro/{subdir}"):
-        for name in files:
-            if name == "common.cfg":
-                file_path = os.path.join(path, name)
-                s.move(
-                    ".kokoro/common_env_vars.cfg",
-                    file_path,
-                    merge=lambda src, dst, _,: f"{dst}\n{src}",
-                )
diff --git a/.librarian/generator-input/noxfile.py b/.librarian/generator-input/noxfile.py
new file mode 100644
index 000000000..5c352793a
--- /dev/null
+++ b/.librarian/generator-input/noxfile.py
@@ -0,0 +1,493 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generated by synthtool. DO NOT EDIT!
+
+from __future__ import absolute_import
+
+import os
+import pathlib
+import re
+import shutil
+from typing import Dict, List
+import warnings
+
+import nox
+
+FLAKE8_VERSION = "flake8==6.1.0"
+BLACK_VERSION = "black[jupyter]==23.7.0"
+ISORT_VERSION = "isort==5.11.0"
+LINT_PATHS = ["docs", "google", "tests", "noxfile.py", "setup.py"]
+
+DEFAULT_PYTHON_VERSION = "3.10"
+
+UNIT_TEST_PYTHON_VERSIONS: List[str] = [
+    "3.9",
+    "3.10",
+    "3.11",
+    "3.12",
+    "3.13",
+]
+UNIT_TEST_STANDARD_DEPENDENCIES = [
+    "mock",
+    "asyncmock",
+    "pytest",
+    "pytest-cov",
+    "pytest-asyncio",
+]
+UNIT_TEST_EXTERNAL_DEPENDENCIES: List[str] = [
+    "flask",
+    "webob",
+    "django",
+]
+UNIT_TEST_LOCAL_DEPENDENCIES: List[str] = []
+UNIT_TEST_DEPENDENCIES: List[str] = []
+UNIT_TEST_EXTRAS: List[str] = []
+UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
+
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.12"]
+SYSTEM_TEST_STANDARD_DEPENDENCIES: List[str] = [
+    "mock",
+    "pytest",
+    "google-cloud-testutils",
+]
+SYSTEM_TEST_EXTERNAL_DEPENDENCIES: List[str] = [
+    "google-cloud-bigquery",
+    "google-cloud-pubsub",
+    "google-cloud-storage",
+    "google-cloud-testutils",
+    "opentelemetry-sdk",
+]
+SYSTEM_TEST_LOCAL_DEPENDENCIES: List[str] = []
+SYSTEM_TEST_DEPENDENCIES: List[str] = []
+SYSTEM_TEST_EXTRAS: List[str] = []
+SYSTEM_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
+
+CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
+
+nox.options.sessions = [
+    "unit",
+    "system",
+    "cover",
+    "lint",
+    "lint_setup_py",
+    "blacken",
+    "docs",
+    "docfx",
+    "format",
+]
+
+# Error if a python version is missing
+nox.options.error_on_missing_interpreters = True
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint(session):
+    """Run linters.
+
+    Returns a failure if the linters find linting errors or sufficiently
+    serious code quality issues.
+    """
+    session.install(FLAKE8_VERSION, BLACK_VERSION)
+    session.run(
+        "black",
+        "--check",
+        *LINT_PATHS,
+    )
+    session.run("flake8", "google", "tests")
+
+
+@nox.session(python="3.13")
+def blacken(session):
+    """Run black. Format code to uniform standard."""
+    session.install(BLACK_VERSION)
+    session.run(
+        "black",
+        *LINT_PATHS,
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def format(session):
+    """
+    Run isort to sort imports. Then run black
+    to format code to uniform standard.
+    """
+    session.install(BLACK_VERSION, ISORT_VERSION)
+    # Use the --fss option to sort imports using strict alphabetical order.
+    # See https://pycqa.github.io/isort/docs/configuration/options.html#force-sort-within-sections
+    session.run(
+        "isort",
+        "--fss",
+        *LINT_PATHS,
+    )
+    session.run(
+        "black",
+        *LINT_PATHS,
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint_setup_py(session):
+    """Verify that setup.py is valid (including RST check)."""
+    session.install("docutils", "pygments")
+    session.run("python", "setup.py", "check", "--restructuredtext", "--strict")
+
+
+def install_unittest_dependencies(session, *constraints):
+    standard_deps = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_DEPENDENCIES
+    session.install(*standard_deps, *constraints)
+
+    if UNIT_TEST_EXTERNAL_DEPENDENCIES:
+        warnings.warn(
+            "'unit_test_external_dependencies' is deprecated. Instead, please "
+            "use 'unit_test_dependencies' or 'unit_test_local_dependencies'.",
+            DeprecationWarning,
+        )
+        session.install(*UNIT_TEST_EXTERNAL_DEPENDENCIES, *constraints)
+
+    if UNIT_TEST_LOCAL_DEPENDENCIES:
+        session.install(*UNIT_TEST_LOCAL_DEPENDENCIES, *constraints)
+
+    if UNIT_TEST_EXTRAS_BY_PYTHON:
+        extras = UNIT_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
+    elif UNIT_TEST_EXTRAS:
+        extras = UNIT_TEST_EXTRAS
+    else:
+        extras = []
+
+    if extras:
+        session.install("-e", f".[{','.join(extras)}]", *constraints)
+    else:
+        session.install("-e", ".", *constraints)
+
+
+@nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
+@nox.parametrize(
+    "protobuf_implementation",
+    ["python", "upb", "cpp"],
+)
+def unit(session, protobuf_implementation):
+    # Install all test dependencies, then install this package in-place.
+
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+        session.skip("cpp implementation is not supported in python 3.11+")
+
+    constraints_path = str(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
+    )
+    install_unittest_dependencies(session, "-c", constraints_path)
+
+    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
+    # The 'cpp' implementation requires Protobuf<4.
+    if protobuf_implementation == "cpp":
+        session.install("protobuf<4")
+
+    # Run py.test against the unit tests.
+    session.run(
+        "py.test",
+        "--quiet",
+        f"--junitxml=unit_{session.python}_sponge_log.xml",
+        "--cov=google",
+        "--cov=tests/unit",
+        "--cov-append",
+        "--cov-config=.coveragerc",
+        "--cov-report=",
+        "--cov-fail-under=0",
+        os.path.join("tests", "unit"),
+        *session.posargs,
+        env={
+            "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
+        },
+    )
+
+
+def install_systemtest_dependencies(session, *constraints):
+    # Use pre-release gRPC for system tests.
+    # Exclude version 1.52.0rc1 which has a known issue.
+    # See https://github.com/grpc/grpc/issues/32163
+    session.install("--pre", "grpcio!=1.52.0rc1")
+
+    session.install(*SYSTEM_TEST_STANDARD_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_EXTERNAL_DEPENDENCIES:
+        session.install(*SYSTEM_TEST_EXTERNAL_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_LOCAL_DEPENDENCIES:
+        session.install("-e", *SYSTEM_TEST_LOCAL_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_DEPENDENCIES:
+        session.install("-e", *SYSTEM_TEST_DEPENDENCIES, *constraints)
+
+    if SYSTEM_TEST_EXTRAS_BY_PYTHON:
+        extras = SYSTEM_TEST_EXTRAS_BY_PYTHON.get(session.python, [])
+    elif SYSTEM_TEST_EXTRAS:
+        extras = SYSTEM_TEST_EXTRAS
+    else:
+        extras = []
+
+    if extras:
+        session.install("-e", f".[{','.join(extras)}]", *constraints)
+    else:
+        session.install("-e", ".", *constraints)
+
+
+@nox.session(python=SYSTEM_TEST_PYTHON_VERSIONS)
+def system(session):
+    """Run the system test suite."""
+    constraints_path = str(
+        CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
+    )
+    system_test_path = os.path.join("tests", "system.py")
+    system_test_folder_path = os.path.join("tests", "system")
+
+    # Check the value of `RUN_SYSTEM_TESTS` env var. It defaults to true.
+    if os.environ.get("RUN_SYSTEM_TESTS", "true") == "false":
+        session.skip("RUN_SYSTEM_TESTS is set to false, skipping")
+    # Install pyopenssl for mTLS testing.
+    if os.environ.get("GOOGLE_API_USE_CLIENT_CERTIFICATE", "false") == "true":
+        session.install("pyopenssl")
+
+    system_test_exists = os.path.exists(system_test_path)
+    system_test_folder_exists = os.path.exists(system_test_folder_path)
+    # Sanity check: only run tests if found.
+    if not system_test_exists and not system_test_folder_exists:
+        session.skip("System tests were not found")
+
+    install_systemtest_dependencies(session, "-c", constraints_path)
+
+    # Run py.test against the system tests.
+    if system_test_exists:
+        session.run(
+            "py.test",
+            "--quiet",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_path,
+            *session.posargs,
+        )
+    if system_test_folder_exists:
+        session.run(
+            "py.test",
+            "--quiet",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_folder_path,
+            *session.posargs,
+        )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def cover(session):
+    """Run the final coverage report.
+
+    This outputs the coverage report aggregating coverage from the unit
+    test runs (not system test runs), and then erases coverage data.
+    """
+    session.install("coverage", "pytest-cov")
+    session.run("coverage", "report", "--show-missing", "--fail-under=99")
+
+    session.run("coverage", "erase")
+
+
+@nox.session(python="3.10")
+def docs(session):
+    """Build the docs for this library."""
+
+    session.install("-e", ".")
+    session.install(
+        # We need to pin to specific versions of the `sphinxcontrib-*` packages
+        # which still support sphinx 4.x.
+        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
+        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
+        "sphinxcontrib-applehelp==1.0.4",
+        "sphinxcontrib-devhelp==1.0.2",
+        "sphinxcontrib-htmlhelp==2.0.1",
+        "sphinxcontrib-qthelp==1.0.3",
+        "sphinxcontrib-serializinghtml==1.1.5",
+        "sphinx==4.5.0",
+        "alabaster",
+        "recommonmark",
+    )
+
+    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
+    session.run(
+        "sphinx-build",
+        "-W",  # warnings as errors
+        "-T",  # show full traceback on exception
+        "-N",  # no colors
+        "-b",
+        "html",
+        "-d",
+        os.path.join("docs", "_build", "doctrees", ""),
+        os.path.join("docs", ""),
+        os.path.join("docs", "_build", "html", ""),
+    )
+
+
+@nox.session(python="3.10")
+def docfx(session):
+    """Build the docfx yaml files for this library."""
+
+    session.install("-e", ".")
+    session.install(
+        # We need to pin to specific versions of the `sphinxcontrib-*` packages
+        # which still support sphinx 4.x.
+        # See https://github.com/googleapis/sphinx-docfx-yaml/issues/344
+        # and https://github.com/googleapis/sphinx-docfx-yaml/issues/345.
+        "sphinxcontrib-applehelp==1.0.4",
+        "sphinxcontrib-devhelp==1.0.2",
+        "sphinxcontrib-htmlhelp==2.0.1",
+        "sphinxcontrib-qthelp==1.0.3",
+        "sphinxcontrib-serializinghtml==1.1.5",
+        "gcp-sphinx-docfx-yaml",
+        "alabaster",
+        "recommonmark",
+    )
+
+    shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
+    session.run(
+        "sphinx-build",
+        "-T",  # show full traceback on exception
+        "-N",  # no colors
+        "-D",
+        (
+            "extensions=sphinx.ext.autodoc,"
+            "sphinx.ext.autosummary,"
+            "docfx_yaml.extension,"
+            "sphinx.ext.intersphinx,"
+            "sphinx.ext.coverage,"
+            "sphinx.ext.napoleon,"
+            "sphinx.ext.todo,"
+            "sphinx.ext.viewcode,"
+            "recommonmark"
+        ),
+        "-b",
+        "html",
+        "-d",
+        os.path.join("docs", "_build", "doctrees", ""),
+        os.path.join("docs", ""),
+        os.path.join("docs", "_build", "html", ""),
+    )
+
+
+@nox.session(python="3.13")
+@nox.parametrize(
+    "protobuf_implementation",
+    ["python", "upb", "cpp"],
+)
+def prerelease_deps(session, protobuf_implementation):
+    """Run all tests with prerelease versions of dependencies installed."""
+
+    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+        session.skip("cpp implementation is not supported in python 3.11+")
+
+    # Install all dependencies
+    session.install("-e", ".[all, tests, tracing]")
+    unit_deps_all = UNIT_TEST_STANDARD_DEPENDENCIES + UNIT_TEST_EXTERNAL_DEPENDENCIES
+    session.install(*unit_deps_all)
+    system_deps_all = (
+        SYSTEM_TEST_STANDARD_DEPENDENCIES + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
+    )
+    session.install(*system_deps_all)
+
+    # Because we test minimum dependency versions on the minimum Python
+    # version, the first version we test with in the unit tests sessions has a
+    # constraints file containing all dependencies and extras.
+    with open(
+        CURRENT_DIRECTORY
+        / "testing"
+        / f"constraints-{UNIT_TEST_PYTHON_VERSIONS[0]}.txt",
+        encoding="utf-8",
+    ) as constraints_file:
+        constraints_text = constraints_file.read()
+
+    # Ignore leading whitespace and comment lines.
+    constraints_deps = [
+        match.group(1)
+        for match in re.finditer(
+            r"^\s*(\S+)(?===\S+)", constraints_text, flags=re.MULTILINE
+        )
+    ]
+
+    session.install(*constraints_deps)
+
+    prerel_deps = [
+        "google-cloud-audit-log",
+        "protobuf",
+        # dependency of grpc
+        "six",
+        "grpc-google-iam-v1",
+        "googleapis-common-protos",
+        "grpcio",
+        "grpcio-status",
+        "google-api-core",
+        "google-auth",
+        "proto-plus",
+        "google-cloud-testutils",
+        # dependencies of google-cloud-testutils"
+        "click",
+    ]
+
+    for dep in prerel_deps:
+        session.install("--pre", "--no-deps", "--upgrade", dep)
+
+    # Remaining dependencies
+    other_deps = [
+        "requests",
+    ]
+    session.install(*other_deps)
+
+    # Print out prerelease package versions
+    session.run(
+        "python", "-c", "import google.protobuf; print(google.protobuf.__version__)"
+    )
+    session.run("python", "-c", "import grpc; print(grpc.__version__)")
+    session.run("python", "-c", "import google.auth; print(google.auth.__version__)")
+
+    session.run(
+        "py.test",
+        "tests/unit",
+        env={
+            "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
+        },
+    )
+
+    system_test_path = os.path.join("tests", "system.py")
+    system_test_folder_path = os.path.join("tests", "system")
+
+    # Only run system tests if found.
+    if os.path.exists(system_test_path):
+        session.run(
+            "py.test",
+            "--verbose",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_path,
+            *session.posargs,
+            env={
+                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
+            },
+        )
+    if os.path.exists(system_test_folder_path):
+        session.run(
+            "py.test",
+            "--verbose",
+            f"--junitxml=system_{session.python}_sponge_log.xml",
+            system_test_folder_path,
+            *session.posargs,
+            env={
+                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
+            },
+        )
diff --git a/.librarian/generator-input/setup.py b/.librarian/generator-input/setup.py
new file mode 100644
index 000000000..c80db0467
--- /dev/null
+++ b/.librarian/generator-input/setup.py
@@ -0,0 +1,97 @@
+# -*- coding: utf-8 -*-
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import io
+import os
+
+import setuptools  # type: ignore
+
+package_root = os.path.abspath(os.path.dirname(__file__))
+
+name = "google-cloud-logging"
+
+
+description = "Stackdriver Logging API client library"
+
+version = {}
+with open(os.path.join(package_root, "google/cloud/logging/gapic_version.py")) as fp:
+    exec(fp.read(), version)
+version = version["__version__"]
+
+if version[0] == "0":
+    release_status = "Development Status :: 4 - Beta"
+else:
+    release_status = "Development Status :: 5 - Production/Stable"
+
+dependencies = [
+    "google-api-core[grpc] >= 1.34.1, <3.0.0,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*,!=2.8.*,!=2.9.*,!=2.10.*",
+    # Exclude incompatible versions of `google-auth`
+    # See https://github.com/googleapis/google-cloud-python/issues/12364
+    "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
+    "google-cloud-appengine-logging>=0.1.3, <2.0.0",
+    "google-cloud-audit-log >= 0.3.1, < 1.0.0",
+    "google-cloud-core >= 2.0.0, <3.0.0",
+    "grpc-google-iam-v1 >=0.12.4, <1.0.0",
+    "opentelemetry-api >= 1.9.0",
+    "proto-plus >= 1.22.0, <2.0.0",
+    "proto-plus >= 1.22.2, <2.0.0; python_version>='3.11'",
+    "proto-plus >= 1.25.0, <2.0.0; python_version>='3.13'",
+    "protobuf>=3.20.2,<7.0.0,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
+]
+url = "https://github.com/googleapis/python-logging"
+
+package_root = os.path.abspath(os.path.dirname(__file__))
+
+readme_filename = os.path.join(package_root, "README.rst")
+with io.open(readme_filename, encoding="utf-8") as readme_file:
+    readme = readme_file.read()
+
+packages = [
+    package
+    for package in setuptools.find_namespace_packages()
+    if package.startswith("google")
+]
+
+setuptools.setup(
+    name=name,
+    version=version,
+    description=description,
+    long_description=readme,
+    author="Google LLC",
+    author_email="googleapis-packages@google.com",
+    license="Apache 2.0",
+    url=url,
+    classifiers=[
+        release_status,
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: Apache Software License",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Operating System :: OS Independent",
+        "Topic :: Internet",
+    ],
+    platforms="Posix; MacOS X; Windows",
+    packages=packages,
+    python_requires=">=3.7",
+    install_requires=dependencies,
+    include_package_data=True,
+    zip_safe=False,
+)
diff --git a/.librarian/state.yaml b/.librarian/state.yaml
new file mode 100644
index 000000000..2edc47251
--- /dev/null
+++ b/.librarian/state.yaml
@@ -0,0 +1,41 @@
+image: us-central1-docker.pkg.dev/cloud-sdk-librarian-prod/images-prod/python-librarian-generator@sha256:8e2c32496077054105bd06c54a59d6a6694287bc053588e24debe6da6920ad91
+libraries:
+  - id: google-cloud-logging
+    version: 3.12.1
+    last_generated_commit: 5400ccce473c439885bd6bf2924fd242271bfcab
+    apis:
+      - path: google/logging/v2
+        service_config: logging_v2.yaml
+    source_roots:
+      - .
+    preserve_regex: []
+    remove_regex:
+      - ^.coveragerc
+      - ^.flake8
+      - ^.pre-commit-config.yaml
+      - ^.trampolinerc
+      - ^.repo-metadata.json
+      - ^LICENSE
+      - ^MANIFEST.in
+      - ^SECURITY.md
+      - ^mypy.ini
+      - ^noxfile.py
+      - ^renovate.json
+      - ^setup.py
+      - ^docs/summary_overview.md
+      - ^docs/_static/custom.css
+      - ^docs/_templates
+      - ^google/cloud/logging_v2/services
+      - ^google/cloud/logging_v2/types
+      - ^google/cloud/logging_v2/gapic_version.py
+      - ^google/cloud/logging_v2/gapic_metadata.json
+      - ^google/cloud/logging_v2/py.typed
+      - ^google/cloud/logging/gapic_version.py
+      - ^google/cloud/logging/py.typed
+      - ^samples/AUTHORING_GUIDE.md
+      - ^samples/CONTRIBUTING.md
+      - ^samples/generated_samples
+      - ^tests/__init__.py
+      - ^tests/unit/__init__.py
+      - ^tests/unit/gapic
+    tag_format: v{version}
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
deleted file mode 100644
index d235af2ce..000000000
--- a/.release-please-manifest.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    ".": "3.12.1"
-}
diff --git a/MANIFEST.in b/MANIFEST.in
index d6814cd60..dae249ec8 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,25 +1,20 @@
 # -*- coding: utf-8 -*-
-#
-# Copyright 2024 Google LLC
+# Copyright 2025 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#     https://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
-# Generated by synthtool. DO NOT EDIT!
+#
 include README.rst LICENSE
-recursive-include google *.json *.proto py.typed
+recursive-include google *.py *.pyi *.json *.proto py.typed
 recursive-include tests *
 global-exclude *.py[co]
 global-exclude __pycache__
-
-# Exclude scripts for samples readmegen
-prune scripts/readme-gen
diff --git a/docs/_templates/layout.html b/docs/_templates/layout.html
index 6316a537f..95e9c77fc 100644
--- a/docs/_templates/layout.html
+++ b/docs/_templates/layout.html
@@ -20,8 +20,8 @@
           {% endblock %}
 
           <div class="body" role="main">
-          	<div class="admonition" id="python2-eol"> 
-          	 As of January 1, 2020 this library no longer supports Python 2 on the latest released version. 
+          	<div class="admonition" id="python2-eol">
+          	 As of January 1, 2020 this library no longer supports Python 2 on the latest released version.
           	 Library versions released prior to that date will continue to be available. For more information please
           	 visit <a href="https://cloud.google.com/python/docs/python2-sunset/">Python 2 support on Google Cloud</a>.
           	</div>
diff --git a/google/cloud/logging/gapic_version.py b/google/cloud/logging/gapic_version.py
index 14833215c..bca86d636 100644
--- a/google/cloud/logging/gapic_version.py
+++ b/google/cloud/logging/gapic_version.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2022 Google LLC
+# Copyright 2025 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/google/cloud/logging_v2/gapic_version.py b/google/cloud/logging_v2/gapic_version.py
index 14833215c..bca86d636 100644
--- a/google/cloud/logging_v2/gapic_version.py
+++ b/google/cloud/logging_v2/gapic_version.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2022 Google LLC
+# Copyright 2025 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/noxfile.py b/noxfile.py
index e71504756..5c352793a 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -110,7 +110,7 @@ def lint(session):
     session.run("flake8", "google", "tests")
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python="3.13")
 def blacken(session):
     """Run black. Format code to uniform standard."""
     session.install(BLACK_VERSION)
diff --git a/release-please-config.json b/release-please-config.json
deleted file mode 100644
index 264e357f4..000000000
--- a/release-please-config.json
+++ /dev/null
@@ -1,25 +0,0 @@
-{
-    "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
-    "packages": {
-      ".": {
-        "release-type": "python",
-        "extra-files": [
-          "google/cloud/logging_v2/gapic_version.py",
-          "google/cloud/logging/gapic_version.py",
-          {
-            "type": "json",
-            "path": "samples/generated_samples/snippet_metadata_google.logging.v2.json",
-            "jsonpath": "$.clientLibrary.version"
-          }
-        ]
-      }
-    },
-    "release-type": "python",
-    "plugins": [
-      {
-        "type": "sentence-case"
-      }
-    ],
-    "initial-version": "0.1.0"
-}
-  
\ No newline at end of file
diff --git a/samples/generated_samples/snippet_metadata_google.logging.v2.json b/samples/generated_samples/snippet_metadata_google.logging.v2.json
index 10c88271f..7d77545ab 100644
--- a/samples/generated_samples/snippet_metadata_google.logging.v2.json
+++ b/samples/generated_samples/snippet_metadata_google.logging.v2.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-logging",
-    "version": "0.0.0"
+    "version": "3.12.1"
   },
   "snippets": [
     {