diff --git a/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts b/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts
new file mode 100644
index 00000000000..295e926df1a
--- /dev/null
+++ b/tests/runner-e2e/chat-catalog-domains/external-secret-question.ts
@@ -0,0 +1,23 @@
+import { createHash } from "node:crypto";
+import type { AskUserQuestionsInteraction } from "../../../packages/shared/src/types/issue.js";
+import { askUserQuestionsPayloadSchema } from "../../../packages/shared/src/validators/issue.js";
+
+export interface SecretQuestionBinding {
+  companyId: string; issueId: string; agentId: string; userId: string; runId: string;
+}
+/** Structural admission only. Each credential journey owns its intent and saved-value proof. */
+export function boundSecretQuestion(value: unknown, b: SecretQuestionBinding, status: "pending" | "answered" = "pending") {
+  const row = value as Partial<AskUserQuestionsInteraction> | undefined;
+  if (!row || typeof row.id !== "string" || row.kind !== "ask_user_questions" || row.status !== status
+    || row.companyId !== b.companyId || row.issueId !== b.issueId || row.sourceRunId !== b.runId
+    || row.createdByAgentId !== b.agentId || row.createdByUserId || row.addresseeUserId !== b.userId || row.addresseeAgentId
+    || row.resolverPolicy !== "human_only" || row.continuationPolicy !== "wake_assignee") return;
+  if (status === "pending" ? row.resolvedByUserId || row.resolvedByAgentId : row.resolvedByUserId !== b.userId || row.resolvedByAgentId) return;
+  const parsed = askUserQuestionsPayloadSchema.safeParse(row.payload), qs = parsed.success ? parsed.data.questionSet : undefined;
+  if (!qs || qs.questions.length !== 1) return;
+  const q = qs.questions[0]!;
+  if (q.answerMode !== "single_select" || q.customAnswer?.enabled || !q.required || !q.options?.length) return;
+  return { row: { ...row, id: row.id }, questionSet: qs, question: { ...q, options: q.options },
+    text: [qs.description, q.prompt, q.helpText].filter(Boolean).join("\n"),
+    payloadHash: createHash("sha256").update(JSON.stringify(row.payload)).digest("hex") };
+}