diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f841d19
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+pyarc
+=====
+
+A simple cli tool for Phabricator. Aims at being some sort of arcanist on
+steroids.
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..8704293
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,32 @@
+import sys
+from os import path
+from io import open
+from setuptools import setup, find_packages
+
+here = path.abspath(path.dirname(__file__))
+src_dir = path.join(here, "src")
+
+# When executing the setup.py, we need to be able to import ourselves, this
+# means that we need to add the src/ directory to the sys.path.
+sys.path.insert(0, src_dir)
+
+# Get the long description from the README file
+with open(path.join(here, 'README.md'), encoding='utf-8') as f:
+    long_description = f.read()
+
+setup(
+    name='pyarc',
+    version='0.0.1',
+    description='',
+    long_description=long_description,
+    long_description_content_type='text/markdown',
+    install_requires=[
+        'click',
+        'phabricator',
+        'gitpython'],
+    package_dir={"": "src"},
+    packages=find_packages('src'),
+    entry_points={
+        'console_scripts': [
+            'pyarc=pyarc.cli:pyarc']},
+    )
diff --git a/src/pyarc/__init__.py b/src/pyarc/__init__.py
new file mode 100644
index 0000000..37a11af
--- /dev/null
+++ b/src/pyarc/__init__.py
@@ -0,0 +1,4 @@
+from . import whoami
+from . import diff
+
+__all__ = (whoami, diff)
diff --git a/src/pyarc/cli.py b/src/pyarc/cli.py
new file mode 100644
index 0000000..0c8fa2e
--- /dev/null
+++ b/src/pyarc/cli.py
@@ -0,0 +1,24 @@
+import click
+from phabricator import Phabricator
+
+
+class options(dict):
+    def __getattr__(self, key):
+        return self[key]
+
+    def __setattr__(self, key, value):
+        self[key] = value
+
+
+@click.group()
+@click.option('-v', '--verbose/--no-verbose', default=False, envvar='VERBOSE')
+@click.pass_context
+def pyarc(ctx, verbose):
+    """Entry point"""
+    ctx.ensure_object(dict)
+    ctx.obj['cnx'] = Phabricator()
+    ctx.obj['options'] = options(verbose=verbose)
+
+
+if __name__ == '__main__':
+    pyarc(obj={})
diff --git a/src/pyarc/diff.py b/src/pyarc/diff.py
new file mode 100644
index 0000000..9068f9b
--- /dev/null
+++ b/src/pyarc/diff.py
@@ -0,0 +1,84 @@
+from itertools import chain
+import click
+import git
+from .cli import pyarc
+from .whoami import get_user
+from .tools import wrap, object_from_phid
+
+
+def get_repositories(cnx, uris):
+    if isinstance(uris, str):
+        uris = [uris]
+    return cnx.diffusion.repository.search(
+        constraints={'uris': uris}).data
+
+
+def repo_from_phid(cnx, phid):
+    repo = cnx.diffusion.repository.search(
+        constraints={'phids': [phid]}).data
+    return repo and repo[0] or None
+
+
+def format_diff(kw):
+    kw = kw.copy()
+    kw['id'] = click.style(str(kw['id']), bold=True)
+    kw['fields']['status']['name'] = click.style(
+        kw['fields']['status']['name'],
+        fg=kw['fields']['status']['color.ansi'])
+    return kw
+
+
+@pyarc.command()
+@click.option('-u', '--mine/--all-users', default=False)
+@click.option('-A', '--all-repos/--current-repo', default=False)
+@click.option('-s', '--summary/--default', default=False)
+@click.pass_context
+def diff(ctx, mine, all_repos, summary):
+    '''List Diffs'''
+    cnx = ctx.obj['cnx']
+    user = get_user(cnx)
+    # options = ctx.obj['options']
+
+    query = {'statuses': ['open()']}
+    gitrepo = None
+    repos = None
+    if not all_repos:
+        try:
+            gitrepo = git.Repo()
+            remotes = list(chain(*(r.urls for r in gitrepo.remotes)))
+            repos = get_repositories(cnx, remotes)
+        except git.InvalidGitRepositoryError:
+            pass
+    if repos:
+        query['repositoryPHIDs'] = [r['phid'] for r in repos]
+    if mine:
+        query['authorPHIDs'] = [user.phid]
+
+    # print('query=', query)
+    diffs = cnx.differential.revision.search(constraints=query).data
+
+    for diff in sorted(diffs, key=lambda x: int(x['id'])):
+        fields = diff['fields']
+        if summary:
+            click.echo(
+                '{fields[status][name]:25} D{id}: {fields[title]}'.format(
+                    **format_diff(diff)))
+        else:
+            click.echo(
+                wrap('{fields[status][name]:25} D{id}'.format(
+                    **format_diff(diff))))
+            # give a bit more informations
+            phrepo = repo_from_phid(cnx, fields['repositoryPHID'])['fields']
+            author = object_from_phid(cnx, fields['authorPHID'])
+            click.echo('{key}: {shortName} ({callsign})'.format(
+                key=click.style('Repo', fg='yellow'),
+                **phrepo))
+            click.echo('{key}: {value}'.format(
+                key=click.style('Author', fg='yellow'),
+                value=author['name']))
+            click.secho('Summary:', fg='yellow')
+            click.secho('  ' + fields['title'], bold=True)
+            click.echo()
+            click.echo('\n'.join('  ' + x
+                                 for x in fields['summary'].splitlines()))
+            click.echo()
diff --git a/src/pyarc/tools.py b/src/pyarc/tools.py
new file mode 100644
index 0000000..24dff9b
--- /dev/null
+++ b/src/pyarc/tools.py
@@ -0,0 +1,13 @@
+import os
+
+ROWS, COLUMNS = map(int, os.popen('stty size', 'r').read().split())
+
+
+def wrap(msg, width=COLUMNS):
+    if len(msg) > width:
+        return msg[:width-1] + '\u2026'
+    return msg
+
+
+def object_from_phid(cnx, phid):
+    return cnx.phid.query(phids=[phid])[phid]
diff --git a/src/pyarc/whoami.py b/src/pyarc/whoami.py
new file mode 100644
index 0000000..1c96eae
--- /dev/null
+++ b/src/pyarc/whoami.py
@@ -0,0 +1,18 @@
+import click
+from .cli import pyarc
+
+
+def get_user(cnx):
+    return cnx.user.whoami()
+
+
+@pyarc.command()
+@click.pass_context
+def whoami(ctx):
+    '''Gives informations on the current user'''
+    user = get_user(ctx.obj['cnx'])
+    click.echo("{userName} ({realName})".format(**user))
+    options = ctx.obj['options']
+    if options.verbose:
+        for k in ('phid', 'primaryEmail', 'roles', 'uri'):
+            click.echo("  {}: {}".format(k, user[k]))