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diff --git a/compute_kernel_writer/prototype/include/ckw/Error.h b/compute_kernel_writer/prototype/include/ckw/Error.h
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+++ b/compute_kernel_writer/prototype/include/ckw/Error.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2023 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef CKW_PROTOTYPE_INCLUDE_CKW_ERROR_H
+#define CKW_PROTOTYPE_INCLUDE_CKW_ERROR_H
+
+#include <stdexcept>
+#include <string>
+
+namespace ckw
+{
+
+/** If the condition is not met, throw an std::runtime_error with the specified message.
+ *
+ * @param[in] cond The condition that is expected to be true.
+ * @param[in] msg  The error message when the condition is not met.
+ */
+#define CKW_ASSERT_MSG(cond, msg)            \
+    do                                       \
+    {                                        \
+        if(!(cond))                          \
+        {                                    \
+            throw ::std::runtime_error(msg); \
+        }                                    \
+    } while(false)
+
+/** If the condition is not met, throw an std::runtime_error.
+ *
+ * @param[in] cond The condition that is expected to be true.
+ */
+#define CKW_ASSERT(cond) CKW_ASSERT_MSG(cond, #cond)
+
+/** If the precondition is met but the consequence is not met, throw an std::runtime_error.
+ *
+ * @param[in] precond The condition if is met requires the consequence must also be met.
+ * @param[in] cond    The condition that is expected to be true if the precondition is true.
+ */
+#define CKW_ASSERT_IF(precond, cond) \
+    CKW_ASSERT_MSG(!(precond) || ((precond) && (cond)), #precond " |-> " #cond)
+
+/** Mark the variables as unused.
+ *
+ * @param[in] ... Variables which are unused.
+ */
+#define CKW_UNUSED(...) ::ckw::ignore_unused(__VA_ARGS__) // NOLINT
+
+/** Mark the variables as unused.
+ *
+ * @param[in] ... Variables which are unused.
+ */
+template <typename... T>
+inline void ignore_unused(T &&...)
+{
+}
+
+} // namespace ckw
+
+#endif // CKW_INCLUDE_CKW_ERROR_H