diff --git a/azure-sdk-tools/packaging_tools/__init__.py b/azure-sdk-tools/packaging_tools/__init__.py
index 44026e4c6374..0b9d14c54f84 100644
--- a/azure-sdk-tools/packaging_tools/__init__.py
+++ b/azure-sdk-tools/packaging_tools/__init__.py
@@ -1,6 +1,7 @@
 import logging
+import os
 from pathlib import Path
-from typing import Dict, Any
+from typing import Dict, Any, Optional, List
 
 from jinja2 import Template, PackageLoader, Environment
 from .conf import read_conf, build_default_conf, CONF_NAME
@@ -29,7 +30,28 @@ def build_config(config : Dict[str, Any]) -> Dict[str, str]:
     # Return result
     return result
 
-def build_packaging(package_name: str, output_folder: str, build_conf: bool = False) -> None:
+
+def build_packaging(output_folder: str, gh_token: Optional[str]=None, jenkins: bool = False, packages: List[str]=None, build_conf: bool = False) -> None:
+    package_names = set(packages) or set()
+    if jenkins:
+        sdk_id = os.environ["ghprbGhRepository"]
+        pr_number = int(os.environ["ghprbPullId"])
+
+        from github import Github
+        con = Github(gh_token)
+        repo = con.get_repo(sdk_id)
+        sdk_pr = repo.get_pull(pr_number)
+        # "get_files" of Github only download the first 300 files. Might not be enough.
+        package_names |= {f.filename.split('/')[0] for f in sdk_pr.get_files() if f.filename.startswith("azure")}
+
+    if not package_names:
+        raise ValueError("Was unable to find out the package names.")
+
+    for package_name in package_names:
+        build_packaging_by_package_name(package_name, output_folder, build_conf)
+
+
+def build_packaging_by_package_name(package_name: str, output_folder: str, build_conf: bool = False) -> None:
     _LOGGER.info("Building template %s", package_name)
     package_folder = Path(output_folder) / Path(package_name)
 
diff --git a/azure-sdk-tools/packaging_tools/__main__.py b/azure-sdk-tools/packaging_tools/__main__.py
index 2faec6d52012..da4c398b19d3 100644
--- a/azure-sdk-tools/packaging_tools/__main__.py
+++ b/azure-sdk-tools/packaging_tools/__main__.py
@@ -1,5 +1,6 @@
 import argparse
 import logging
+import os
 import sys
 
 from . import build_packaging
@@ -23,7 +24,10 @@
 parser.add_argument("--build-conf",
                     dest="build_conf", action="store_true",
                     help="Build a default TOML file, with package name, fake pretty name, as beta package and no doc page. Do nothing if the file exists, remove manually the file if needed.")
-parser.add_argument('package_name', help='The package name.')
+parser.add_argument("--jenkins",
+                    dest="jenkins", action="store_true",
+                    help="In Jenkins mode, try to find what to generate from Jenkins env variables. Package names are then optional.")
+parser.add_argument('package_names', nargs='*', help='The package name.')
 
 args = parser.parse_args()
 
@@ -31,8 +35,17 @@
 logging.basicConfig()
 main_logger.setLevel(logging.DEBUG if args.debug else logging.INFO)
 
+if not args.package_names and not args.jenkins:
+    raise ValueError("At least one package name or Jenkins mode is required")
+
 try:
-    build_packaging(args.package_name, args.output, build_conf=args.build_conf)
+    build_packaging(
+        args.output,
+        os.environ.get("GH_TOKEN", None),
+        args.jenkins,
+        args.package_names,
+        build_conf=args.build_conf
+    )
 except Exception as err:
     if args.debug:
         _LOGGER.exception(err)