diff --git a/src/OpaqueVal.cc b/src/OpaqueVal.cc
index bce619fd5d..4c36084091 100644
--- a/src/OpaqueVal.cc
+++ b/src/OpaqueVal.cc
@@ -1092,46 +1092,4 @@ ValPtr ParaglobVal::DoClone(CloneState* state) {
     }
 }
 
-std::optional<BrokerData> TelemetryVal::DoSerializeData() const { return std::nullopt; }
-
-bool TelemetryVal::DoUnserializeData(BrokerDataView) { return false; }
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntCounter>) : OpaqueVal(int_counter_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntCounterFamily>) : OpaqueVal(int_counter_metric_family_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblCounter>) : OpaqueVal(dbl_counter_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblCounterFamily>) : OpaqueVal(dbl_counter_metric_family_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntGauge>) : OpaqueVal(int_gauge_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntGaugeFamily>) : OpaqueVal(int_gauge_metric_family_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblGauge>) : OpaqueVal(dbl_gauge_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblGaugeFamily>) : OpaqueVal(dbl_gauge_metric_family_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntHistogram>) : OpaqueVal(int_histogram_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntHistogramFamily>)
-    : OpaqueVal(int_histogram_metric_family_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblHistogram>) : OpaqueVal(dbl_histogram_metric_type) {}
-
-TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblHistogramFamily>)
-    : OpaqueVal(dbl_histogram_metric_family_type) {}
-
-IMPLEMENT_OPAQUE_VALUE(IntCounterMetricVal)
-IMPLEMENT_OPAQUE_VALUE(IntCounterMetricFamilyVal)
-IMPLEMENT_OPAQUE_VALUE(DblCounterMetricVal)
-IMPLEMENT_OPAQUE_VALUE(DblCounterMetricFamilyVal)
-IMPLEMENT_OPAQUE_VALUE(IntGaugeMetricVal)
-IMPLEMENT_OPAQUE_VALUE(IntGaugeMetricFamilyVal)
-IMPLEMENT_OPAQUE_VALUE(DblGaugeMetricVal)
-IMPLEMENT_OPAQUE_VALUE(DblGaugeMetricFamilyVal)
-IMPLEMENT_OPAQUE_VALUE(IntHistogramMetricVal)
-IMPLEMENT_OPAQUE_VALUE(IntHistogramMetricFamilyVal)
-IMPLEMENT_OPAQUE_VALUE(DblHistogramMetricVal)
-IMPLEMENT_OPAQUE_VALUE(DblHistogramMetricFamilyVal)
 } // namespace zeek
diff --git a/src/OpaqueVal.h b/src/OpaqueVal.h
index 7e94cbcc2c..371e5fad57 100644
--- a/src/OpaqueVal.h
+++ b/src/OpaqueVal.h
@@ -443,62 +443,4 @@ private:
     std::unique_ptr<paraglob::Paraglob> internal_paraglob;
 };
 
-/**
- * Base class for metric handles. Handle types are not serializable.
- */
-class TelemetryVal : public OpaqueVal {
-protected:
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntCounter>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntCounterFamily>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblCounter>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblCounterFamily>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntGauge>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntGaugeFamily>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblGauge>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblGaugeFamily>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntHistogram>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::IntHistogramFamily>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblHistogram>);
-    explicit TelemetryVal(std::shared_ptr<telemetry::DblHistogramFamily>);
-
-    std::optional<BrokerData> DoSerializeData() const override;
-    bool DoUnserializeData(BrokerDataView data) override;
-};
-
-template<class Handle>
-class TelemetryValImpl : public TelemetryVal {
-public:
-    using HandleType = std::shared_ptr<Handle>;
-
-    explicit TelemetryValImpl(HandleType hdl) : TelemetryVal(hdl), hdl(hdl) {}
-
-    HandleType GetHandle() const noexcept { return hdl; }
-
-    static zeek::OpaqueValPtr OpaqueInstantiate() {
-        reporter->Error("TelemetryValImpl::OpaqueInstantiate is unsupported");
-        return nullptr;
-    }
-
-protected:
-    ValPtr DoClone(CloneState*) override { return make_intrusive<TelemetryValImpl>(hdl); }
-
-    const char* OpaqueName() const override { return Handle::OpaqueName; }
-
-private:
-    HandleType hdl;
-};
-
-using IntCounterMetricVal = TelemetryValImpl<telemetry::IntCounter>;
-using IntCounterMetricFamilyVal = TelemetryValImpl<telemetry::IntCounterFamily>;
-using DblCounterMetricVal = TelemetryValImpl<telemetry::DblCounter>;
-using DblCounterMetricFamilyVal = TelemetryValImpl<telemetry::DblCounterFamily>;
-using IntGaugeMetricVal = TelemetryValImpl<telemetry::IntGauge>;
-using IntGaugeMetricFamilyVal = TelemetryValImpl<telemetry::IntGaugeFamily>;
-using DblGaugeMetricVal = TelemetryValImpl<telemetry::DblGauge>;
-using DblGaugeMetricFamilyVal = TelemetryValImpl<telemetry::DblGaugeFamily>;
-using IntHistogramMetricVal = TelemetryValImpl<telemetry::IntHistogram>;
-using IntHistogramMetricFamilyVal = TelemetryValImpl<telemetry::IntHistogramFamily>;
-using DblHistogramMetricVal = TelemetryValImpl<telemetry::DblHistogram>;
-using DblHistogramMetricFamilyVal = TelemetryValImpl<telemetry::DblHistogramFamily>;
-
 } // namespace zeek
diff --git a/src/telemetry/CMakeLists.txt b/src/telemetry/CMakeLists.txt
index 76f3da9e38..cb6e1b73f9 100644
--- a/src/telemetry/CMakeLists.txt
+++ b/src/telemetry/CMakeLists.txt
@@ -3,6 +3,7 @@ zeek_add_subdir_library(
     SOURCES
     Manager.cc
     MetricFamily.cc
+    Opaques.cc
     ProcessStats.cc
     BIFS
     telemetry.bif)
diff --git a/src/telemetry/Opaques.cc b/src/telemetry/Opaques.cc
new file mode 100644
index 0000000000..d5a7af9e55
--- /dev/null
+++ b/src/telemetry/Opaques.cc
@@ -0,0 +1,44 @@
+#include "Opaques.h"
+
+using namespace zeek;
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntCounter>) : OpaqueVal(int_counter_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntCounterFamily>) : OpaqueVal(int_counter_metric_family_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblCounter>) : OpaqueVal(dbl_counter_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblCounterFamily>) : OpaqueVal(dbl_counter_metric_family_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntGauge>) : OpaqueVal(int_gauge_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntGaugeFamily>) : OpaqueVal(int_gauge_metric_family_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblGauge>) : OpaqueVal(dbl_gauge_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblGaugeFamily>) : OpaqueVal(dbl_gauge_metric_family_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntHistogram>) : OpaqueVal(int_histogram_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::IntHistogramFamily>)
+    : OpaqueVal(int_histogram_metric_family_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblHistogram>) : OpaqueVal(dbl_histogram_metric_type) {}
+
+TelemetryVal::TelemetryVal(std::shared_ptr<telemetry::DblHistogramFamily>)
+    : OpaqueVal(dbl_histogram_metric_family_type) {}
+
+// TelemetryVal::TelemetryVal(prometheus::Counter&) : OpaqueVal(
+
+IMPLEMENT_OPAQUE_VALUE(IntCounterMetricVal)
+IMPLEMENT_OPAQUE_VALUE(IntCounterMetricFamilyVal)
+IMPLEMENT_OPAQUE_VALUE(DblCounterMetricVal)
+IMPLEMENT_OPAQUE_VALUE(DblCounterMetricFamilyVal)
+IMPLEMENT_OPAQUE_VALUE(IntGaugeMetricVal)
+IMPLEMENT_OPAQUE_VALUE(IntGaugeMetricFamilyVal)
+IMPLEMENT_OPAQUE_VALUE(DblGaugeMetricVal)
+IMPLEMENT_OPAQUE_VALUE(DblGaugeMetricFamilyVal)
+IMPLEMENT_OPAQUE_VALUE(IntHistogramMetricVal)
+IMPLEMENT_OPAQUE_VALUE(IntHistogramMetricFamilyVal)
+IMPLEMENT_OPAQUE_VALUE(DblHistogramMetricVal)
+IMPLEMENT_OPAQUE_VALUE(DblHistogramMetricFamilyVal)
diff --git a/src/telemetry/Opaques.h b/src/telemetry/Opaques.h
new file mode 100644
index 0000000000..5540012838
--- /dev/null
+++ b/src/telemetry/Opaques.h
@@ -0,0 +1,71 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
+#pragma once
+
+#include "zeek/OpaqueVal.h"
+#include "zeek/broker/Data.h"
+
+#include "prometheus/counter.h"
+#include "prometheus/family.h"
+
+namespace zeek {
+
+/**
+ * Base class for metric handles. Handle types are not serializable.
+ */
+class TelemetryVal : public OpaqueVal {
+protected:
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntCounter>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntCounterFamily>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblCounter>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblCounterFamily>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntGauge>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntGaugeFamily>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblGauge>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblGaugeFamily>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntHistogram>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::IntHistogramFamily>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblHistogram>);
+    explicit TelemetryVal(std::shared_ptr<telemetry::DblHistogramFamily>);
+
+    std::optional<BrokerData> DoSerializeData() const override { return std::nullopt; }
+    bool DoUnserializeData(BrokerDataView data) override { return false; }
+};
+
+template<class Handle>
+class TelemetryValImpl : public TelemetryVal {
+public:
+    using HandleType = std::shared_ptr<Handle>;
+
+    explicit TelemetryValImpl(HandleType hdl) : TelemetryVal(hdl), hdl(hdl) {}
+
+    HandleType GetHandle() const noexcept { return hdl; }
+
+    static zeek::OpaqueValPtr OpaqueInstantiate() {
+        reporter->Error("TelemetryValImpl::OpaqueInstantiate is unsupported");
+        return nullptr;
+    }
+
+protected:
+    ValPtr DoClone(CloneState*) override { return make_intrusive<TelemetryValImpl>(hdl); }
+
+    const char* OpaqueName() const override { return Handle::OpaqueName; }
+
+private:
+    HandleType hdl;
+};
+
+using IntCounterMetricVal = TelemetryValImpl<telemetry::IntCounter>;
+using IntCounterMetricFamilyVal = TelemetryValImpl<telemetry::IntCounterFamily>;
+using DblCounterMetricVal = TelemetryValImpl<telemetry::DblCounter>;
+using DblCounterMetricFamilyVal = TelemetryValImpl<telemetry::DblCounterFamily>;
+using IntGaugeMetricVal = TelemetryValImpl<telemetry::IntGauge>;
+using IntGaugeMetricFamilyVal = TelemetryValImpl<telemetry::IntGaugeFamily>;
+using DblGaugeMetricVal = TelemetryValImpl<telemetry::DblGauge>;
+using DblGaugeMetricFamilyVal = TelemetryValImpl<telemetry::DblGaugeFamily>;
+using IntHistogramMetricVal = TelemetryValImpl<telemetry::IntHistogram>;
+using IntHistogramMetricFamilyVal = TelemetryValImpl<telemetry::IntHistogramFamily>;
+using DblHistogramMetricVal = TelemetryValImpl<telemetry::DblHistogram>;
+using DblHistogramMetricFamilyVal = TelemetryValImpl<telemetry::DblHistogramFamily>;
+
+} // namespace zeek
diff --git a/src/telemetry/telemetry.bif b/src/telemetry/telemetry.bif
index 01d67b4ec4..d294cae270 100644
--- a/src/telemetry/telemetry.bif
+++ b/src/telemetry/telemetry.bif
@@ -17,6 +17,7 @@ enum MetricType %{
 #include "zeek/telemetry/Gauge.h"
 #include "zeek/telemetry/Histogram.h"
 #include "zeek/telemetry/Manager.h"
+#include "zeek/telemetry/Opaques.h"
 
 namespace {