diff --git a/scripts/aggregate_agent_metrics.py b/scripts/aggregate_agent_metrics.py
index d86a84e48..3162db4b8 100755
--- a/scripts/aggregate_agent_metrics.py
+++ b/scripts/aggregate_agent_metrics.py
@@ -417,10 +417,20 @@ def _safe_int(value: Any) -> int | None:
 
 
 def _langsmith_trace_count(entry: dict[str, Any]) -> int:
-    count = 1 if entry.get("langsmith_trace_id") else 0
+    count = 1 if entry.get("langsmith_trace_id") or entry.get("langsmith_trace_url") else 0
     traces = entry.get("langsmith_traces")
     if isinstance(traces, list):
-        list_count = sum(1 for item in traces if isinstance(item, dict) and item.get("trace_id"))
+        list_count = sum(
+            1
+            for item in traces
+            if isinstance(item, dict)
+            and (
+                item.get("trace_id")
+                or item.get("langsmith_trace_id")
+                or item.get("trace_url")
+                or item.get("langsmith_trace_url")
+            )
+        )
         return max(count, list_count)
     return count
 
diff --git a/scripts/langchain/issue_pr_context.py b/scripts/langchain/issue_pr_context.py
index 803c872f6..884a5a8fa 100644
--- a/scripts/langchain/issue_pr_context.py
+++ b/scripts/langchain/issue_pr_context.py
@@ -60,9 +60,11 @@ def estimate_tokens(text: str, *, model: str | None = None) -> int:
         encoding = (
             tiktoken.encoding_for_model(model) if model else tiktoken.get_encoding("cl100k_base")
         )
+        return max(len(encoding.encode(value)), chars_estimate)
     except Exception:
-        encoding = tiktoken.get_encoding("cl100k_base")
-    return max(len(encoding.encode(value)), chars_estimate)
+        # tiktoken may need to download encoding metadata on first use; fall back
+        # to the chars-based estimate when network access is unavailable.
+        return chars_estimate
 
 
 def build_issue_context(
diff --git a/templates/consumer-repo/scripts/aggregate_agent_metrics.py b/templates/consumer-repo/scripts/aggregate_agent_metrics.py
index d86a84e48..3162db4b8 100755
--- a/templates/consumer-repo/scripts/aggregate_agent_metrics.py
+++ b/templates/consumer-repo/scripts/aggregate_agent_metrics.py
@@ -417,10 +417,20 @@ def _safe_int(value: Any) -> int | None:
 
 
 def _langsmith_trace_count(entry: dict[str, Any]) -> int:
-    count = 1 if entry.get("langsmith_trace_id") else 0
+    count = 1 if entry.get("langsmith_trace_id") or entry.get("langsmith_trace_url") else 0
     traces = entry.get("langsmith_traces")
     if isinstance(traces, list):
-        list_count = sum(1 for item in traces if isinstance(item, dict) and item.get("trace_id"))
+        list_count = sum(
+            1
+            for item in traces
+            if isinstance(item, dict)
+            and (
+                item.get("trace_id")
+                or item.get("langsmith_trace_id")
+                or item.get("trace_url")
+                or item.get("langsmith_trace_url")
+            )
+        )
         return max(count, list_count)
     return count
 
diff --git a/tests/scripts/test_aggregate_agent_metrics.py b/tests/scripts/test_aggregate_agent_metrics.py
index 31c690ec6..91da0c65d 100644
--- a/tests/scripts/test_aggregate_agent_metrics.py
+++ b/tests/scripts/test_aggregate_agent_metrics.py
@@ -182,6 +182,12 @@ def test_langsmith_trace_counts_cover_single_ids_and_trace_lists() -> None:
                 {"trace_id": "verifier-trace-3"},
             ],
         },
+        {
+            "metric_type": "verifier",
+            "run_id": "verify-3",
+            "verdict": "pass",
+            "langsmith_trace_url": "https://smith.langchain.com/r/verifier-trace-url",
+        },
         {
             "metric_type": "step",
             "issue_number": 11,
@@ -201,18 +207,40 @@ def test_langsmith_trace_counts_cover_single_ids_and_trace_lists() -> None:
                 {"trace_id": "autopilot-trace-3"},
             ],
         },
+        {
+            "metric_type": "step",
+            "issue_number": 12,
+            "step_name": "format",
+            "success": True,
+            "duration_ms": 300,
+            "langsmith_trace_url": "https://smith.langchain.com/r/autopilot-trace-url",
+        },
     ]
 
     summary = aggregate_agent_metrics.build_summary(entries, errors=0)
 
-    assert "LangSmith trace coverage: 100.0% (2/2) (3 traces)" in summary
-    assert summary.count("LangSmith trace coverage: 100.0% (2/2) (3 traces)") == 2
+    assert "LangSmith trace coverage: 100.0% (3/3) (4 traces)" in summary
+    assert summary.count("LangSmith trace coverage: 100.0% (3/3) (4 traces)") == 2
 
     contract = aggregate_agent_metrics.build_summary_contract(entries, [])
-    assert contract["summaries"]["verifier"]["langsmith_trace_records"] == 2
-    assert contract["summaries"]["verifier"]["langsmith_trace_count"] == 3
-    assert contract["summaries"]["autopilot"]["langsmith_trace_records"] == 2
-    assert contract["summaries"]["autopilot"]["langsmith_trace_count"] == 3
+    assert contract["summaries"]["verifier"]["langsmith_trace_records"] == 3
+    assert contract["summaries"]["verifier"]["langsmith_trace_count"] == 4
+    assert contract["summaries"]["autopilot"]["langsmith_trace_records"] == 3
+    assert contract["summaries"]["autopilot"]["langsmith_trace_count"] == 4
+
+
+def test_langsmith_trace_counts_cover_url_only_trace_lists() -> None:
+    assert (
+        aggregate_agent_metrics._langsmith_trace_count(
+            {
+                "langsmith_traces": [
+                    {"trace_url": "https://smith.langchain.com/r/list-trace-url"},
+                    {"langsmith_trace_url": "https://smith.langchain.com/r/list-langsmith-url"},
+                ]
+            }
+        )
+        == 2
+    )
 
 
 def test_main_writes_summary(monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None: