diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -86,17 +86,24 @@
 
 ## Local run
 
-PyPI loader expects as input:
-- project: a pypi project name (ex: arrow)
-- project_url: uri to the pypi project (html page)
-- project_metadata_url: uri to the pypi metadata information (json page)
-
+The built-in command-line will run the loader for a project in the main PyPI archive.
+For instance, to load arrow:
 ``` sh
-$ python3
-Python 3.6.6 (default, Jun 27 2018, 14:44:17)
-[GCC 8.1.0] on linux
-Type "help", "copyright", "credits" or "license" for more information.
->>> import logging; logging.basicConfig(level=logging.DEBUG
->>> project='arrow; from swh.loader.pypi.tasks import LoadPyPI;
->>> LoadPyPI().run(project, 'https://pypi.org/pypi/%s/' % project, 'https://pypi.org/pypi/%s/json' % project)
+python3 -m swh.loader.pypi arrow
+```
+
+If you need more control, you can use the loader directly. It expects three arguments:
+- project: a PyPI project name (f.e.: arrow)
+- project_url: URL of the PyPI project (human-readable html page)
+- project_metadata_url: URL of the PyPI metadata information (machine-parsable json document)
+
+``` python
+import logging
+logging.basicConfig(level=logging.DEBUG)
+
+from swh.loader.pypi.tasks import LoadPyPI
+
+project='arrow'
+
+LoadPyPI().run(project, 'https://pypi.org/pypi/%s/' % project, 'https://pypi.org/pypi/%s/json' % project)
 ```
diff --git a/swh/loader/pypi/loader.py b/swh/loader/pypi/loader.py
--- a/swh/loader/pypi/loader.py
+++ b/swh/loader/pypi/loader.py
@@ -242,3 +242,19 @@
         if self.done:
             self.generate_and_load_snapshot()
             self.flush()
+
+
+if __name__ == '__main__':
+    import logging
+    import sys
+    logging.basicConfig(level=logging.DEBUG)
+    if len(sys.argv) != 2:
+        logging.error('Usage: %s <module-name>' % sys.argv[0])
+        sys.exit(1)
+    module_name = sys.argv[1]
+    loader = PyPILoader()
+    loader.load(
+        module_name,
+        'https://pypi.org/projects/%s/' % module_name,
+        'https://pypi.org/pypi/%s/json' % module_name,
+    )