diff --git a/src/hooks/ralph-loop/completion-promise-detector.test.ts b/src/hooks/ralph-loop/completion-promise-detector.test.ts
index 317883a6c..814684068 100644
--- a/src/hooks/ralph-loop/completion-promise-detector.test.ts
+++ b/src/hooks/ralph-loop/completion-promise-detector.test.ts
@@ -89,7 +89,7 @@ describe("detectCompletionInSessionMessages", () => {
   })
 
   describe("#given promise appears in tool_result part (not text part)", () => {
-    test("#when Oracle returns VERIFIED via task() tool_result #then should NOT detect completion", async () => {
+    test("#when Oracle returns VERIFIED via task() tool_result #then should detect completion", async () => {
       const messages = [
         {
           info: { role: "assistant" },
@@ -116,6 +116,29 @@ describe("detectCompletionInSessionMessages", () => {
         sinceMessageIndex: 0,
       })
 
+      expect(detected).toBe(true)
+    })
+
+    test("#when non-Oracle tool_result returns VERIFIED #then should NOT detect completion", async () => {
+      const messages = [
+        {
+          info: { role: "assistant" },
+          parts: [
+            { type: "tool_result", text: "Agent: explore\n\n<promise>VERIFIED</promise>" },
+            { type: "text", text: "Explore finished checking." },
+          ],
+        },
+      ]
+      const ctx = createPluginInput(messages)
+
+      const detected = await detectCompletionInSessionMessages(ctx, {
+        sessionID: "session-123",
+        promise: "VERIFIED",
+        apiTimeoutMs: 1000,
+        directory: "/tmp",
+        sinceMessageIndex: 0,
+      })
+
       expect(detected).toBe(false)
     })
 
diff --git a/src/hooks/ralph-loop/completion-promise-detector.ts b/src/hooks/ralph-loop/completion-promise-detector.ts
index ccfba8888..b6e8f38ec 100644
--- a/src/hooks/ralph-loop/completion-promise-detector.ts
+++ b/src/hooks/ralph-loop/completion-promise-detector.ts
@@ -34,6 +34,22 @@ function buildPromisePattern(promise: string): RegExp {
 	return new RegExp(`<promise>\\s*${escapeRegex(promise)}\\s*</promise>`, "is")
 }
 
+function shouldInspectSessionMessagePart(
+	partType: string,
+	promise: string,
+	partText: string,
+): boolean {
+	if (partType === "text") {
+		return true
+	}
+
+	if (partType !== "tool_result") {
+		return false
+	}
+
+	return promise === ULTRAWORK_VERIFICATION_PROMISE && ORACLE_AGENT_PATTERN.test(partText)
+}
+
 function shouldInspectTranscriptEntry(
 	entry: TranscriptEntry,
 	promise: string,
@@ -127,14 +143,13 @@ export async function detectCompletionInSessionMessages(
 			const assistant = assistantMessages[index]
 			if (!assistant.parts) continue
 
-			let responseText = ""
 			for (const part of assistant.parts) {
-				if (part.type !== "text") continue
-				responseText += `${responseText ? "\n" : ""}${part.text ?? ""}`
-			}
-
-			if (pattern.test(responseText)) {
-				return true
+				const partText = part.text ?? ""
+				if (!partText) continue
+				if (!shouldInspectSessionMessagePart(part.type, options.promise, partText)) continue
+				if (pattern.test(partText)) {
+					return true
+				}
 			}
 		}