diff --git a/README.md b/README.md
index a363501..94b32c9 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,10 @@ create channels for student groups according to group information on gitea. Opti
 
 Example: `python3 -m joint_teapot create-channels-on-mm --prefix p1 --suffix -private --invite-teaching-team` will fetch all repos whose names start with `"p1"` and create channels on mm for these repos like "p1team1-private". Members of a repo will be added to the corresponding channel. And teaching team (adjust in `.env`) will be invited to the channels.
 
+### `create-comment`
+
+create a comment for an issue on gitea.
+
 ### `create-issues`
 
 create issues on gitea. Specify a list of repos (use `--regex` to match against list of patterns), a title, and a body (use `--file` to read from file), in this order.
diff --git a/joint_teapot/app.py b/joint_teapot/app.py
index 9bb8822..9c634fc 100644
--- a/joint_teapot/app.py
+++ b/joint_teapot/app.py
@@ -75,6 +75,15 @@ def create_issue_for_repos(
     tea.pot.create_issue_for_repos(repo_names, title, body, from_file, use_regex)
 
 
+@app.command("create-comment", help="create a comment for an issue on gitea")
+def create_comment(
+    repo_name: str,
+    index: int,
+    body: str = Argument(..., help="comment body"),
+) -> None:
+    tea.pot.create_comment(repo_name, index, body)
+
+
 @app.command("create-milestones", help="create milestones on gitea")
 def create_milestone_for_repos(
     repo_names: List[str], title: str, description: str, due_on: datetime
diff --git a/joint_teapot/teapot.py b/joint_teapot/teapot.py
index 3fbff58..e1a946d 100644
--- a/joint_teapot/teapot.py
+++ b/joint_teapot/teapot.py
@@ -152,6 +152,14 @@ class Teapot:
         for repo_name in affected_repos:
             self.gitea.create_issue(repo_name, title, content)
 
+    def create_comment(
+        self,
+        repo_name: str,
+        index: int,
+        body: str,
+    ) -> None:
+        self.gitea.create_comment(repo_name, index, body)
+
     def create_milestone_for_repos(
         self, repo_names: List[str], title: str, description: str, due_on: datetime
     ) -> None:
diff --git a/joint_teapot/workers/gitea.py b/joint_teapot/workers/gitea.py
index 828f725..f2ea965 100644
--- a/joint_teapot/workers/gitea.py
+++ b/joint_teapot/workers/gitea.py
@@ -346,6 +346,20 @@ class Gitea:
         )
         logger.info(f'Created issue "{title}" in {repo_name}')
 
+    def create_comment(
+        self,
+        repo_name: str,
+        index: int,
+        body: str,
+    ) -> None:
+        self.issue_api.issue_create_comment(
+            self.org_name,
+            repo_name,
+            index,
+            body={"body": body},
+        )
+        logger.info(f"Created comment in {repo_name}/issues/{index}")
+
     def create_milestone(
         self,
         repo_name: str,