diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -15,6 +15,44 @@
 
 # Basic use
 
+The main entry point to import a Mercurial repository is the `main` function
+defined in the `swh.loader.mercurial.cli` module:
+
+``` bash
+python3 -m swh.loader.mercurial.cli
+```
+
+
+If the Python package has been installed via `pip`, you should be able
+to type:
+
+``` bash
+user@host:~$ swh-loader-hg --help
+
+Usage: swh-loader-hg [OPTIONS] ORIGIN_URL
+
+Options:
+  -d, --hg-directory TEXT         Path to the hg (local) directory to load
+                                  from. If unset, the hg repo will ben cloned
+                                  from the given (origin) url
+  -a, --hg-archive TEXT           Path to the hg (local) archive file to load
+                                  from.
+  -D, --visit-date TEXT           Visit date (defaults to now)
+  -l, --log-level [NOTSET|DEBUG|INFO|WARNING|ERROR|CRITICAL]
+                                  Log level
+  --help                          Show this message and exit.
+
+```
+
+For example:
+
+``` bash
+user@host:~$ swh-loader-hg https://www.mercurial-scm.org/repo/hello
+[...]
+```
+
+
+# From Python
 From python3's toplevel:
 
 ## Remote
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -25,4 +25,7 @@
     setup_requires=['vcversioner'],
     vcversioner={},
     include_package_data=True,
+    entry_points={
+        'console_scripts': ['swh-loader-hg=swh.loader.mercurial.cli:main'],
+        },
 )
diff --git a/swh/loader/mercurial/bundle20_loader_verifier.py b/swh/loader/mercurial/bundle20_loader_verifier.py
--- a/swh/loader/mercurial/bundle20_loader_verifier.py
+++ b/swh/loader/mercurial/bundle20_loader_verifier.py
@@ -15,7 +15,7 @@
 
 from swh.model.hashutil import MultiHash
 
-from .bundle20_loader import HgBundle20Loader
+from .loader import HgBundle20Loader
 from .converters import PRIMARY_ALGO as ALGO
 from .objects import SimpleTree
 
diff --git a/swh/loader/mercurial/cli.py b/swh/loader/mercurial/cli.py
new file mode 100644
--- /dev/null
+++ b/swh/loader/mercurial/cli.py
@@ -0,0 +1,50 @@
+# Copyright (C) 2018  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+import datetime
+import click
+import logging
+
+from .loader import HgBundle20Loader, HgArchiveBundle20Loader
+
+LOGLEVELS = [logging._levelToName[lvl]
+             for lvl in sorted(logging._levelToName.keys())]
+
+
+@click.command()
+@click.argument('origin-url')
+@click.option('--hg-directory', '-d',
+              help=('Path to the hg (local) directory to load from. '
+                    'If unset, the hg repo will be cloned from the '
+                    'given (origin) url.'))
+@click.option('--hg-archive', '-a',
+              help=('Path to the hg archive file to load from.'))
+@click.option('--visit-date', '-D', help='Visit date (defaults to now).')
+@click.option('--log-level', '-l',
+              type=click.Choice(LOGLEVELS, case_sensitive=False),
+              help='Log level.')
+def main(origin_url, hg_directory=None,
+         hg_archive=None, visit_date=None, log_level=None):
+
+    logging.basicConfig(
+        level=(log_level or 'DEBUG').upper(),
+        format='%(asctime)s %(process)d %(message)s')
+
+    if not visit_date:
+        visit_date = datetime.datetime.now(tz=datetime.timezone.utc)
+    kwargs = {'visit_date': visit_date,
+              'origin_url': origin_url}
+    if hg_archive:
+        HgLoader = HgArchiveBundle20Loader
+        kwargs['archive_path'] = hg_archive
+    else:
+        HgLoader = HgBundle20Loader
+        kwargs['directory'] = hg_directory
+
+    return HgLoader().load(**kwargs)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/swh/loader/mercurial/bundle20_loader.py b/swh/loader/mercurial/loader.py
rename from swh/loader/mercurial/bundle20_loader.py
rename to swh/loader/mercurial/loader.py
diff --git a/swh/loader/mercurial/tasks.py b/swh/loader/mercurial/tasks.py
--- a/swh/loader/mercurial/tasks.py
+++ b/swh/loader/mercurial/tasks.py
@@ -5,7 +5,7 @@
 
 from swh.scheduler.task import Task
 
-from .bundle20_loader import HgBundle20Loader, HgArchiveBundle20Loader
+from .loader import HgBundle20Loader, HgArchiveBundle20Loader
 
 
 class LoadMercurialTsk(Task):