diff --git a/scripts/publish_test_metrics.py b/scripts/publish_test_metrics.py
index 86e8bab..7741537 100755
--- a/scripts/publish_test_metrics.py
+++ b/scripts/publish_test_metrics.py
@@ -28,6 +28,12 @@ def _escape_label(value: str) -> str:
     return value.replace("\\", "\\\\").replace("\n", "\\n").replace('"', '\\"')
 
 
+def _label_str(labels: dict[str, str]) -> str:
+    """Render Prometheus labels, omitting empty optional values."""
+    parts = [f'{key}="{_escape_label(val)}"' for key, val in labels.items() if val]
+    return "{" + ",".join(parts) + "}" if parts else ""
+
+
 def _as_int(node: ET.Element, name: str) -> int:
     raw = node.attrib.get(name) or "0"
     try:
@@ -219,6 +225,8 @@ def main() -> int:
     docs_rc_path = Path(os.getenv("QUALITY_GATE_DOCS_RC_PATH", "build/docs-naming.rc"))
     source_root = Path(os.getenv("SOURCE_ROOT", "atlasbot"))
     build_dir = Path(os.getenv("BUILD_DIR", "build"))
+    branch = os.getenv("BRANCH_NAME", os.getenv("GIT_BRANCH", ""))
+    build_number = os.getenv("BUILD_NUMBER", "")
 
     if not junit_path.exists():
         junit_candidates = sorted(build_dir.glob("junit*.xml"))
@@ -280,6 +288,8 @@ def main() -> int:
             f'platform_quality_gate_workspace_line_coverage_percent{{suite="{suite}"}} {coverage_pct:.3f}',
             "# TYPE platform_quality_gate_source_lines_over_500_total gauge",
             f'platform_quality_gate_source_lines_over_500_total{{suite="{suite}"}} {source_lines_over_500}',
+            "# TYPE platform_quality_gate_build_info gauge",
+            f'platform_quality_gate_build_info{_label_str({"suite": suite, "branch": branch, "build_number": build_number})} 1',
             "# TYPE atlasbot_quality_gate_checks_total gauge",
             "# TYPE platform_quality_gate_test_case_result gauge",
         ]