diff --git a/.github/MISSIONS/copilot-to-copilot-fix-marketplace-integrity-gate-2026-05-13.md b/.github/MISSIONS/copilot-to-copilot-fix-marketplace-integrity-gate-2026-05-13.md
new file mode 100644
index 0000000..633fdd1
--- /dev/null
+++ b/.github/MISSIONS/copilot-to-copilot-fix-marketplace-integrity-gate-2026-05-13.md
@@ -0,0 +1,16 @@
+Parent_Agent: copilot
+Child_Agent: copilot
+Mission_Objective: Resolve Marketplace Integrity workflow failure for this PR by satisfying the mission protocol gate after it failed due to a non-trivial change in .github/scripts/validate-registry-paths.sh without a mission file.
+Context_Links:
+  - Current pull request branch: copilot/fix-syntax-error-validate-registry-paths
+  - Workflow: Marketplace Integrity
+  - Trigger file: .github/scripts/validate-registry-paths.sh
+Success_Criteria:
+  - Add a valid mission file under .github/MISSIONS with all mandatory keys populated.
+  - Ensure mission protocol validation passes for the current BASE_SHA...HEAD_SHA range.
+Result_Payload:
+  - Mission file committed in this branch.
+  - CI mission protocol gate no longer fails due to missing mission file.
+Validation_Steps:
+  - Run bash .github/scripts/validate-mission-protocol.sh with BASE_SHA and HEAD_SHA for this PR range.
+  - Confirm the Marketplace Integrity workflow passes on this branch.
diff --git a/.github/scripts/validate-registry-paths.sh b/.github/scripts/validate-registry-paths.sh
index 7a8cc4c..6f39912 100644
--- a/.github/scripts/validate-registry-paths.sh
+++ b/.github/scripts/validate-registry-paths.sh
@@ -28,10 +28,7 @@ fi
 TMPFILE=$(mktemp)
 trap 'rm -f "$TMPFILE"' EXIT
 
-python3 - "$REGISTRY" >"$TMPFILE" <<'PYEOF' || {
-  echo "ERROR: Path extractor (python3) failed. Check that Python 3 is available and registry.json is valid JSON." >&2
-  exit 1
-}
+if ! python3 - "$REGISTRY" >"$TMPFILE" <<'PYEOF'
 import json
 import sys
 
@@ -57,6 +54,10 @@ with open(sys.argv[1]) as fh:
 for p in extract_paths(data):
     print(p)
 PYEOF
+then
+    echo "ERROR: Path extractor (python3) failed. Check that Python 3 is available and registry.json is valid JSON." >&2
+    exit 1
+fi
 
 mapfile -t PATHS <"$TMPFILE"