fix: use GITHUB_TOKEN in get_latest_release to avoid rate limits (#428)

Author: bigcat88

comfy_cli/command/install.py

@@ -476,8 +476,16 @@ def get_latest_release(repo_owner: str, repo_name: str) -> GithubRelease | None:
     """
     url = f"https://api.github.com/repos/{repo_owner}/{repo_name}/releases/latest"
 
+    headers = {}
+    if github_token := os.getenv("GITHUB_TOKEN"):
+        headers["Authorization"] = f"Bearer {github_token}"
+
     try:
-        response = requests.get(url, timeout=5)
+        response = requests.get(url, headers=headers, timeout=5)
+
+        if response.status_code in (403, 429):
+            handle_github_rate_limit(response)
+
         response.raise_for_status()
 
         data = response.json()

tests/comfy_cli/command/github/test_pr.py

@@ -11,6 +11,7 @@
     PRInfo,
     fetch_pr_info,
     find_pr_by_branch,
+    get_latest_release,
     handle_github_rate_limit,
     handle_pr_checkout,
     parse_pr_reference,
@@ -445,6 +446,57 @@ def test_checkout_pr_remote_already_exists(self, mock_getcwd, mock_chdir, mock_s
         assert mock_subprocess.call_count == 3
 
 
+class TestGetLatestRelease:
+    """Test get_latest_release GitHub API calls"""
+
+    @patch("requests.get")
+    def test_sends_auth_header_when_token_set(self, mock_get):
+        """Ensure GITHUB_TOKEN is sent as Bearer auth to avoid rate limits (issue #425)"""
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "tag_name": "v0.18.2",
+            "zipball_url": "https://github.com/comfyanonymous/ComfyUI/archive/v0.18.2.zip",
+        }
+        mock_get.return_value = mock_response
+
+        with patch.dict("os.environ", {"GITHUB_TOKEN": "ghp_test123"}):
+            result = get_latest_release("comfyanonymous", "ComfyUI")
+
+        headers = mock_get.call_args.kwargs.get("headers", {})
+        assert headers["Authorization"] == "Bearer ghp_test123"
+        assert result is not None
+        assert result["tag"] == "v0.18.2"
+
+    @patch("requests.get")
+    def test_no_auth_header_without_token(self, mock_get):
+        """Without GITHUB_TOKEN the request has no Authorization header"""
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "tag_name": "v0.18.2",
+            "zipball_url": "https://github.com/comfyanonymous/ComfyUI/archive/v0.18.2.zip",
+        }
+        mock_get.return_value = mock_response
+
+        with patch.dict("os.environ", {}, clear=True):
+            get_latest_release("comfyanonymous", "ComfyUI")
+
+        headers = mock_get.call_args.kwargs.get("headers", {})
+        assert "Authorization" not in headers
+
+    @patch("requests.get")
+    def test_rate_limit_raises_error(self, mock_get):
+        """A 403 with exhausted rate limit raises GitHubRateLimitError"""
+        mock_response = Mock()
+        mock_response.status_code = 403
+        mock_response.headers = {"x-ratelimit-remaining": "0", "x-ratelimit-reset": "1700000000"}
+        mock_get.return_value = mock_response
+
+        with pytest.raises(GitHubRateLimitError):
+            get_latest_release("comfyanonymous", "ComfyUI")
+
+
 class TestHandleGithubRateLimit:
     def test_primary_rate_limit_message_format(self):
         """Verify the error message does not contain stray characters."""