diff --git a/charon/cmd/__init__.py b/charon/cmd/__init__.py
index e2f54677..985d7f79 100644
--- a/charon/cmd/__init__.py
+++ b/charon/cmd/__init__.py
@@ -19,6 +19,7 @@
 from charon.cmd.cmd_index import index
 from charon.cmd.cmd_checksum import init_checksum, checksum
 from charon.cmd.cmd_cache import init_cf, cf
+from charon.cmd.cmd_sign import sign
 
 
 @group()
@@ -43,3 +44,6 @@ def cli(ctx):
 # init checksum command
 init_checksum()
 cli.add_command(checksum)
+
+# radas sign cmd
+cli.add_command(sign)
diff --git a/charon/cmd/cmd_sign.py b/charon/cmd/cmd_sign.py
new file mode 100644
index 00000000..9578183e
--- /dev/null
+++ b/charon/cmd/cmd_sign.py
@@ -0,0 +1,148 @@
+"""
+Copyright (C) 2022 Red Hat, Inc. (https://github.com/Commonjava/charon)
+
+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.
+"""
+from typing import List
+
+from charon.config import get_config, RadasConfig
+from charon.cmd.internal import (
+    _decide_mode, _safe_delete
+)
+from click import command, option, argument
+
+import traceback
+import logging
+import sys
+import datetime
+
+logger = logging.getLogger(__name__)
+
+
+@argument(
+    "repo_url",
+    type=str
+)
+@option(
+    "--requester",
+    "-r",
+    help="""
+    The requester who sends the signing request.
+    """
+)
+@option(
+    "--result_path",
+    "-p",
+    help="""
+    The path which will save the sign result file.
+    """
+)
+@option(
+    "--ignore_patterns",
+    "-i",
+    multiple=True,
+    help="""
+    The regex patterns list to filter out the files which should
+    not be allowed to upload to S3. Can accept more than one pattern.
+    """
+)
+@option(
+    "--work_dir",
+    "-w",
+    help="""
+    The temporary working directory into which archives should
+    be extracted, when needed.
+    """
+)
+@option(
+    "--config",
+    "-c",
+    help="""
+    The charon configuration yaml file path. Default is
+    $HOME/.charon/charon.yaml
+    """
+)
+@option(
+    "--sign_key",
+    "-k",
+    help="""
+    rpm-sign key to be used, will replace {{ key }} in default configuration for signature.
+    Does noting if detach_signature_command does not contain {{ key }} field.
+    """
+)
+@option(
+    "--debug",
+    "-D",
+    help="Debug mode, will print all debug logs for problem tracking.",
+    is_flag=True,
+    default=False
+)
+@option(
+    "--quiet",
+    "-q",
+    help="Quiet mode, will shrink most of the logs except warning and errors.",
+    is_flag=True,
+    default=False
+)
+@command()
+def sign(
+    repo_url: str,
+    requester: str,
+    result_path: str,
+    ignore_patterns: List[str] = None,
+    work_dir: str = None,
+    config: str = None,
+    sign_key: str = "redhatdevel",
+    debug=False,
+    quiet=False,
+    dryrun=False
+):
+    """Do signing against files in the repo zip in repo_url through
+    radas service. The repo_url points to the maven zip repository
+    in quay.io, which will be sent as the source of the signing.
+    """
+    tmp_dir = work_dir
+    logger.debug("%s", ignore_patterns)
+    try:
+        current = datetime.datetime.now().strftime("%Y%m%d%I%M")
+        _decide_mode("radas_sign", current, is_quiet=quiet, is_debug=debug)
+        if dryrun:
+            logger.info("Running in dry-run mode, no files will signed.")
+        conf = get_config(config)
+        if not conf:
+            logger.error("The charon configuration is not valid!")
+            sys.exit(1)
+        radas_conf = conf.get_radas_config()
+        if not radas_conf or not radas_conf.validate():
+            logger.error("The configuration for radas is not valid!")
+            sys.exit(1)
+        sign_in_radas(repo_url, requester, sign_key, result_path, radas_conf)
+    except Exception:
+        print(traceback.format_exc())
+        sys.exit(2)  # distinguish between exception and bad config or bad state
+    finally:
+        if not debug and tmp_dir:
+            _safe_delete(tmp_dir)
+
+
+def sign_in_radas(repo_url: str,
+                  requester: str,
+                  sign_key: str,
+                  result_path: str,
+                  radas_config: RadasConfig):
+    '''This function will be responsible to do the overall controlling of the whole process,
+    like trigger the send and register the receiver, and control the wait and timeout there.
+    '''
+    logger.debug("params. repo_url: %s, requester: %s, sign_key: %s, result_path: %s,"
+                 "radas_config: %s", repo_url, requester, sign_key, result_path, radas_config)
+    logger.info("Not implemented yet!")