diff --git a/jaraco/develop/sync-github.py b/jaraco/develop/sync-github.py
new file mode 100644
index 0000000..8d04e24
--- /dev/null
+++ b/jaraco/develop/sync-github.py
@@ -0,0 +1,44 @@
+"""
+Sync GitHub metadata repo across all projects.
+
+Metadata includes description, homepage (RTD docs if available) and topics.
+"""
+
+import autocommand
+
+from . import filters
+from . import git
+from . import github
+from . import repo
+from . import rtd
+
+
+@autocommand.autocommand(__name__)
+def main(
+    keyword: filters.Keyword = None,  # type: ignore
+    tag: filters.Tag = None,  # type: ignore
+):
+    for project in filter(tag, filter(keyword, git.projects())):
+        with git.temp_checkout(project, depth=1):
+            md = repo.get_project_metadata()
+            gh = github.Repo.from_project(project)
+            gh_metadata = gh.get_metadata()
+            # https://github.com/jaraco/pytest-perf/issues/10#issuecomment-1913669951
+            # homepage = md.homepage
+            homepage = (
+                gh_metadata.get('homepage')
+                or (project.rtd_url if rtd.rtd_exists(project) else None)
+            )
+            description = gh_metadata.get('description') or md.summary
+            print(f'\n[Metadata for {gh}]')
+            print('Homepage:', homepage)
+            print('Description:', description)
+            print('Topics:', ', '.join(project.topics))
+            gh.update_metadata(
+                homepage=homepage,
+                description=description,
+            )
+            print('\nUpdated metadata.')
+            gh.add_topics(*project.topics)
+            print('Added topics.\n')
+            print(gh.url)