diff --git a/engine/hooks/agent-relay-attribution/detect.py b/engine/hooks/agent-relay-attribution/detect.py
index 980a4aa4..731e617c 100644
--- a/engine/hooks/agent-relay-attribution/detect.py
+++ b/engine/hooks/agent-relay-attribution/detect.py
@@ -28,7 +28,7 @@
     re.IGNORECASE,
 )
 FACT_RE = re.compile(STATUS_RE.pattern + r"|\bbecause\b|\b\d+\b", re.IGNORECASE)
-EVIDENCE_NUMBER_RE = re.compile(r"\b\d{2,}\b")
+EVIDENCE_NUMBER_RE = re.compile(r"\b\d{3,}\b")
 ATTRIBUTION_RE = re.compile(
     r"\bper (?:the |its |their )?(?:sub)?agent'?s?(?: report| output| summary)?\b|"
     r"\bthe (?:sub)?agent (?:reported|reports|says|said|found|wrote|pasted|flagged)\b|"
diff --git a/engine/hooks/agent-relay-attribution/tests/fixtures/relay_fires.json b/engine/hooks/agent-relay-attribution/tests/fixtures/relay_fires.json
index 26e12fd3..2f1976be 100644
--- a/engine/hooks/agent-relay-attribution/tests/fixtures/relay_fires.json
+++ b/engine/hooks/agent-relay-attribution/tests/fixtures/relay_fires.json
@@ -165,5 +165,54 @@
         }
       }
     ]
+  },
+  {
+    "label": "two-digit tool output does not corroborate a relayed claim",
+    "reply": "The cheaper catch is our existing repeat-error-stop hook, which today resets its counter on every edit, so it stayed silent in both loops over the last 30 days.",
+    "transcript": [
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": "plain text"
+        }
+      },
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": "<task-notification>\n<task-id>relay-30</task-id>\n<status>completed</status>\n<summary>Relay completed</summary>\n</task-notification>"
+        }
+      },
+      {
+        "type": "assistant",
+        "message": {
+          "role": "assistant",
+          "content": [
+            {
+              "type": "tool_use",
+              "id": "t-relay-30",
+              "name": "Bash",
+              "input": {
+                "command": "python3 backtest.py --window 7"
+              }
+            }
+          ]
+        }
+      },
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": [
+            {
+              "tool_use_id": "t-relay-30",
+              "type": "tool_result",
+              "content": "python3 backtest.py --window 7: timeout=30 ok"
+            }
+          ]
+        }
+      }
+    ]
   }
 ]
diff --git a/engine/hooks/agent-relay-attribution/tests/fixtures/relay_silent.json b/engine/hooks/agent-relay-attribution/tests/fixtures/relay_silent.json
index 5afaa3fb..ef11a198 100644
--- a/engine/hooks/agent-relay-attribution/tests/fixtures/relay_silent.json
+++ b/engine/hooks/agent-relay-attribution/tests/fixtures/relay_silent.json
@@ -1,4 +1,53 @@
 [
+  {
+    "label": "two-digit tool output remains unrelated to an attributed claim",
+    "reply": "UNVERIFIED: the subagent reports its counter resets on every edit, and it stayed silent over the last 30 days.",
+    "transcript": [
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": "plain text"
+        }
+      },
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": "<task-notification>\n<task-id>relay-30</task-id>\n<status>completed</status>\n<summary>Relay completed</summary>\n</task-notification>"
+        }
+      },
+      {
+        "type": "assistant",
+        "message": {
+          "role": "assistant",
+          "content": [
+            {
+              "type": "tool_use",
+              "id": "t-relay-30",
+              "name": "Bash",
+              "input": {
+                "command": "python3 backtest.py --window 7"
+              }
+            }
+          ]
+        }
+      },
+      {
+        "type": "user",
+        "message": {
+          "role": "user",
+          "content": [
+            {
+              "tool_use_id": "t-relay-30",
+              "type": "tool_result",
+              "content": "python3 backtest.py --window 7: timeout=30 ok"
+            }
+          ]
+        }
+      }
+    ]
+  },
   {
     "label": "same facts attributed with 'Per the agent's report' (real session)",
     "reply": "The gate-effectiveness suite is open as PR #12, not merged: https://github.com/owner/repo/pull/12\n\nPer the agent's report: 24 new tests, suite `271 passed in 14.78s`. One synthetic parent runs the real history, performance, export, reconcile, and grading code.",
diff --git a/engine/hooks/agent-relay-attribution/tests/test_hooks.py b/engine/hooks/agent-relay-attribution/tests/test_hooks.py
index 4bfaca18..d102f73d 100644
--- a/engine/hooks/agent-relay-attribution/tests/test_hooks.py
+++ b/engine/hooks/agent-relay-attribution/tests/test_hooks.py
@@ -60,6 +60,10 @@ def run_hook(payload):
 
 
 class TestFlagsUnattributedRelays(unittest.TestCase):
+    def test_two_digit_tool_output_does_not_corroborate_relay(self):
+        entry = case("relay_fires.json", "two-digit tool output does not corroborate")
+        self.assertIsNotNone(detect.decide_from_lines(entry["reply"], entry["transcript"]))
+
     def test_flags_each_fires_fixture(self):
         for case in load("relay_fires.json"):
             with self.subTest(label=case["label"]):
@@ -92,6 +96,10 @@ def test_flags_claim_absent_from_this_turns_command_output(self):
 
 
 class TestStaysSilentWhenAttributedOrVerified(unittest.TestCase):
+    def test_two_digit_tool_output_stays_unrelated_to_attributed_claim(self):
+        entry = case("relay_silent.json", "two-digit tool output remains unrelated")
+        self.assertIsNone(detect.decide_from_lines(entry["reply"], entry["transcript"]))
+
     def test_silent_on_each_silent_fixture(self):
         for case in load("relay_silent.json"):
             with self.subTest(label=case["label"]):