diff --git a/src/nvidia-gpu/NvidiaGpuMctpVdm.hpp b/src/nvidia-gpu/NvidiaGpuMctpVdm.hpp
new file mode 100644
index 0000000..ce3b393
--- /dev/null
+++ b/src/nvidia-gpu/NvidiaGpuMctpVdm.hpp
@@ -0,0 +1,85 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION &
+ * AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <OcpMctpVdm.hpp>
+
+#include <cstdint>
+#include <span>
+
+namespace gpu
+{
+
+constexpr uint16_t nvidiaPciVendorId = 0x10de;
+
+enum class MessageType : uint8_t
+{
+    DEVICE_CAPABILITY_DISCOVERY = 0,
+    PLATFORM_ENVIRONMENTAL = 3
+};
+
+enum class DeviceCapabilityDiscoveryCommands : uint8_t
+{
+    QUERY_DEVICE_IDENTIFICATION = 0x09,
+};
+
+enum class PlatformEnvironmentalCommands : uint8_t
+{
+    GET_TEMPERATURE_READING = 0x00,
+};
+
+enum class DeviceIdentification : uint8_t
+{
+    DEVICE_GPU = 0
+};
+
+struct QueryDeviceIdentificationRequest
+{
+    ocp::accelerator_management::CommonRequest hdr;
+} __attribute__((packed));
+
+struct QueryDeviceIdentificationResponse
+{
+    ocp::accelerator_management::CommonResponse hdr;
+    uint8_t device_identification;
+    uint8_t instance_id;
+} __attribute__((packed));
+
+struct GetNumericSensorReadingRequest
+{
+    ocp::accelerator_management::CommonRequest hdr;
+    uint8_t sensor_id;
+} __attribute__((packed));
+
+using GetTemperatureReadingRequest = GetNumericSensorReadingRequest;
+
+struct GetTemperatureReadingResponse
+{
+    ocp::accelerator_management::CommonResponse hdr;
+    int32_t reading;
+} __attribute__((packed));
+
+int packHeader(const ocp::accelerator_management::BindingPciVidInfo& hdr,
+               ocp::accelerator_management::BindingPciVid& msg);
+
+int encodeQueryDeviceIdentificationRequest(uint8_t instanceId,
+                                           std::span<uint8_t> buf);
+
+int decodeQueryDeviceIdentificationResponse(
+    std::span<const uint8_t> buf,
+    ocp::accelerator_management::CompletionCode& cc, uint16_t& reasonCode,
+    uint8_t& deviceIdentification, uint8_t& deviceInstance);
+
+int encodeGetTemperatureReadingRequest(uint8_t instanceId, uint8_t sensorId,
+                                       std::span<uint8_t> buf);
+
+int decodeGetTemperatureReadingResponse(
+    std::span<const uint8_t> buf,
+    ocp::accelerator_management::CompletionCode& cc, uint16_t& reasonCode,
+    double& temperatureReading);
+
+} // namespace gpu