diff --git a/git_aggregator/main.py b/git_aggregator/main.py
index 845030d..defe6ac 100644
--- a/git_aggregator/main.py
+++ b/git_aggregator/main.py
@@ -98,6 +98,13 @@ def get_parser():
         help='Expand environment variables in configuration file',
     )
 
+    main_parser.add_argument(
+        'command',
+        nargs='?',
+        default='aggregate',
+        help='aggregate (default): run the aggregation process\n'
+             'show-closed-prs: show pull requests that are not in open state')
+
     return main_parser
 
 
@@ -115,8 +122,9 @@ def main():
     )
 
     try:
-        if args.config:
-            load_aggregate(args)
+        if args.config and \
+                args.command in ('aggregate', 'show-closed-prs'):
+            run(args)
         else:
             parser.print_help()
     except KeyboardInterrupt:
@@ -133,7 +141,7 @@ def match_dir(cwd, dirmatch=None):
 
 def load_aggregate(args):
     """Load YAML and JSON configs and begin creating / updating , aggregating
-    and pushing the repos"""
+    and pushing the repos (deprecated in favor or run())"""
     repos = load_config(args.config, args.expand_env)
     dirmatch = args.dirmatch
     for repo_dict in repos:
@@ -145,3 +153,22 @@ def load_aggregate(args):
         r.aggregate()
         if args.do_push:
             r.push()
+
+
+def run(args):
+    """Load YAML and JSON configs and run the command specified
+    in args.command"""
+    repos = load_config(args.config, args.expand_env)
+    dirmatch = args.dirmatch
+    for repo_dict in repos:
+        r = Repo(**repo_dict)
+        logger.debug('%s' % r)
+        if not match_dir(r.cwd, dirmatch):
+            logger.info("Skip %s", r.cwd)
+            continue
+        if args.command == 'aggregate':
+            r.aggregate()
+            if args.do_push:
+                r.push()
+        elif args.command == 'show-closed-prs':
+            r.show_closed_prs()
diff --git a/git_aggregator/repo.py b/git_aggregator/repo.py
index 7cf1cc2..86d5d68 100644
--- a/git_aggregator/repo.py
+++ b/git_aggregator/repo.py
@@ -6,8 +6,11 @@
 from __future__ import unicode_literals
 import os
 import logging
+import re
 import subprocess
 
+import requests
+
 from .utils import working_directory_keeper
 from .exception import GitAggregatorException
 from ._compat import console_to_str
@@ -284,3 +287,44 @@ def _set_remote(self, name, url):
                         name, exising_url, url)
             self.log_call(['git', 'remote', 'rm', name])
             self.log_call(['git', 'remote', 'add', name, url])
+
+    def _github_api_get(self, path):
+        url = 'https://api.github.com' + path
+        token = os.environ.get('GITHUB_TOKEN')
+        if token:
+            url += '?access_token=' + token
+        return requests.get(url)
+
+    def show_closed_prs(self):
+        REPO_RE = re.compile(
+                '^(https://github.com/|git@github.com:)'
+                '(?P<owner>.*?)/(?P<repo>.*?)(.git)?$')
+        PULL_RE = re.compile(
+            '^(refs/)?pull/(?P<pr>[0-9]+)/head$')
+        remotes = {r['name']: r['url'] for r in self.remotes}
+        for merge in self.merges:
+            remote = merge['remote']
+            ref = merge['ref']
+            repo_url = remotes[remote]
+            repo_mo = REPO_RE.match(repo_url)
+            if not repo_mo:
+                logger.debug('%s is not a github repo', repo_url)
+                continue
+            pull_mo = PULL_RE.match(ref)
+            if not pull_mo:
+                logger.debug('%s is not a github pull reqeust', ref)
+                continue
+            owner = repo_mo.group('owner')
+            repo = repo_mo.group('repo')
+            pr = pull_mo.group('pr')
+            r = self._github_api_get(
+                '/repos/{owner}/{repo}/pulls/{pr}'.format(**locals()))
+            if r.status_code != 200:
+                logger.warning(
+                    'Could not get status of /{owner}/{repo}/pulls/{pr}'.
+                    format(**locals()))
+                continue
+            state = r.json().get('state')
+            if state != 'open':
+                logger.info('https://github.com/{owner}/{repo}/pull/{pr} '
+                            'in state {state}'.format(**locals()))
diff --git a/setup.py b/setup.py
index 75ecda2..8142380 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@
         'kaptan',
         'argcomplete',
         'colorama',
+        'requests',
     ],
     entry_points=dict(
         console_scripts=['gitaggregate=git_aggregator.main:main']),