diff --git a/compiler-plugin/compiler-plugin-backend/src/main/v_2_2/kotlinx/rpc/codegen/VersionSpecificApiImpl.kt b/compiler-plugin/compiler-plugin-backend/src/main/v_2_2/kotlinx/rpc/codegen/VersionSpecificApiImpl.kt
new file mode 100644
index 000000000..1f3c7ab42
--- /dev/null
+++ b/compiler-plugin/compiler-plugin-backend/src/main/v_2_2/kotlinx/rpc/codegen/VersionSpecificApiImpl.kt
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2023-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.rpc.codegen
+
+import org.jetbrains.kotlin.backend.common.extensions.IrPluginContext
+import org.jetbrains.kotlin.backend.common.ir.createExtensionReceiver
+import org.jetbrains.kotlin.cli.common.messages.MessageCollector
+import org.jetbrains.kotlin.config.CommonConfigurationKeys
+import org.jetbrains.kotlin.config.CompilerConfigurationKey
+import org.jetbrains.kotlin.descriptors.SourceElement
+import org.jetbrains.kotlin.ir.builders.declarations.IrFieldBuilder
+import org.jetbrains.kotlin.ir.declarations.*
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.expressions.IrStatementOrigin
+import org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl
+import org.jetbrains.kotlin.ir.expressions.impl.IrConstructorCallImpl
+import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
+import org.jetbrains.kotlin.ir.symbols.IrConstructorSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
+import org.jetbrains.kotlin.ir.types.IrType
+import org.jetbrains.kotlin.ir.util.copyTo
+import org.jetbrains.kotlin.name.CallableId
+import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.platform.TargetPlatform
+import org.jetbrains.kotlin.platform.isJs
+import org.jetbrains.kotlin.platform.isWasm
+
+object VersionSpecificApiImpl : VersionSpecificApi {
+    override fun isJs(platform: TargetPlatform?): Boolean {
+        return platform.isJs()
+    }
+
+    override fun isWasm(platform: TargetPlatform?): Boolean {
+        return platform.isWasm()
+    }
+
+    override var IrFieldBuilder.isFinalVS: Boolean
+        get() = isFinal
+        set(value) {
+            isFinal = value
+        }
+
+    override var IrCall.originVS: IrStatementOrigin?
+        get() = origin
+        set(value) {
+            origin = value
+        }
+
+    override var IrConstructor.isPrimaryVS: Boolean
+        get() = isPrimary
+        set(value) {
+            isPrimary = value
+        }
+
+    override fun referenceClass(context: IrPluginContext, packageName: String, name: String): IrClassSymbol? {
+        return context.referenceClass(
+            ClassId(
+                FqName(packageName),
+                FqName(name),
+                false
+            )
+        )
+    }
+
+    override fun referenceFunctions(
+        context: IrPluginContext,
+        packageName: String,
+        name: String,
+    ): Collection<IrSimpleFunctionSymbol> {
+        return context.referenceFunctions(
+            CallableId(
+                FqName(packageName),
+                Name.identifier(name),
+            )
+        )
+    }
+
+    override fun IrValueParameter.copyToVS(irFunction: IrFunction, origin: IrDeclarationOrigin): IrValueParameter {
+        return copyTo(irFunction, origin)
+    }
+
+    override fun IrSimpleFunction.addExtensionReceiverVS(type: IrType, origin: IrDeclarationOrigin): IrValueParameter {
+        return createExtensionReceiver(type, origin)
+    }
+
+    override val messageCollectorKey: CompilerConfigurationKey<MessageCollector>
+        get() = CommonConfigurationKeys.MESSAGE_COLLECTOR_KEY
+
+    override fun IrCallImplVS(
+        startOffset: Int,
+        endOffset: Int,
+        type: IrType,
+        symbol: IrSimpleFunctionSymbol,
+        typeArgumentsCount: Int,
+        valueArgumentsCount: Int,
+        origin: IrStatementOrigin?,
+        superQualifierSymbol: IrClassSymbol?,
+    ): IrCallImpl {
+        return IrCallImpl(
+            startOffset = startOffset,
+            endOffset = endOffset,
+            type = type,
+            symbol = symbol,
+            typeArgumentsCount = typeArgumentsCount,
+            origin = origin,
+            superQualifierSymbol = superQualifierSymbol,
+        )
+    }
+
+    override fun IrConstructorCallImplVS(
+        startOffset: Int,
+        endOffset: Int,
+        type: IrType,
+        symbol: IrConstructorSymbol,
+        typeArgumentsCount: Int,
+        valueArgumentsCount: Int,
+        constructorTypeArgumentsCount: Int,
+        origin: IrStatementOrigin?,
+        source: SourceElement,
+    ): IrConstructorCallImpl {
+        return IrConstructorCallImpl(
+            startOffset = startOffset,
+            endOffset = endOffset,
+            type = type,
+            symbol = symbol,
+            typeArgumentsCount = typeArgumentsCount,
+            constructorTypeArgumentsCount = constructorTypeArgumentsCount,
+            origin = origin,
+            source = source,
+        )
+    }
+}
diff --git a/gradle-conventions/common/src/main/kotlin/util/apiValidation.kt b/gradle-conventions/common/src/main/kotlin/util/apiValidation.kt
index bf277e849..4edb4b829 100644
--- a/gradle-conventions/common/src/main/kotlin/util/apiValidation.kt
+++ b/gradle-conventions/common/src/main/kotlin/util/apiValidation.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2023-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package util
@@ -11,13 +11,15 @@ import org.gradle.kotlin.dsl.the
 fun Project.configureApiValidation() {
     plugins.apply(libs.plugins.binary.compatibility.validator.get().pluginId)
 
+    val kotlinMasterBuild by optionalProperty()
+
     the<ApiValidationExtension>().apply {
         ignoredPackages.add("kotlinx.rpc.internal")
         ignoredPackages.add("kotlinx.rpc.krpc.internal")
 
         ignoredProjects.addAll(
-            listOf(
-                "compiler-plugin-tests",
+            listOfNotNull(
+                if (kotlinMasterBuild) null else "compiler-plugin-tests",
                 "krpc-test",
                 "utils",
             )
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 63f37299e..39f557186 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,5 +1,5 @@
 /*
- * Copyright 2023-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2023-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 rootProject.name = "kotlinx-rpc"
@@ -59,6 +59,11 @@ includePublic(":krpc:krpc-ktor:krpc-ktor-server")
 includePublic(":krpc:krpc-ktor:krpc-ktor-client")
 
 include(":tests")
-include(":tests:compiler-plugin-tests")
+
+val kotlinMasterBuild = providers.gradleProperty("kotlinx.rpc.kotlinMasterBuild").orNull == "true"
+
+if (!kotlinMasterBuild) {
+    include(":tests:compiler-plugin-tests")
+}
 
 include(":jpms-check")