diff --git a/src/common/serialization/clap.h b/src/common/serialization/clap.h
index f2b2f74d..5b6bdcaa 100644
--- a/src/common/serialization/clap.h
+++ b/src/common/serialization/clap.h
@@ -23,6 +23,7 @@
 #include "../bitsery/ext/message-reference.h"
 #include "../utils.h"
 #include "clap/events.h"
+#include "clap/ext/audio-ports-config.h"
 #include "clap/ext/audio-ports.h"
 #include "clap/ext/gui.h"
 #include "clap/ext/latency.h"
diff --git a/src/common/serialization/clap/ext/audio-ports-config.cpp b/src/common/serialization/clap/ext/audio-ports-config.cpp
new file mode 100644
index 00000000..57280b05
--- /dev/null
+++ b/src/common/serialization/clap/ext/audio-ports-config.cpp
@@ -0,0 +1,58 @@
+// yabridge: a Wine plugin bridge
+// Copyright (C) 2020-2022 Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "audio-ports-config.h"
+
+#include "../../../utils.h"
+
+namespace clap {
+namespace ext {
+namespace audio_ports_config {
+
+AudioPortsConfig::AudioPortsConfig(const clap_audio_ports_config_t& original)
+    : id(original.id),
+      name(original.name),
+      input_port_count(original.input_port_count),
+      output_port_count(original.output_port_count),
+      has_main_input(original.has_main_input),
+      main_input_channel_count(original.main_input_channel_count),
+      main_input_port_type(clap::ext::audio_ports::parse_audio_port_type(
+          original.main_input_port_type)),
+      has_main_output(original.has_main_output),
+      main_output_channel_count(original.main_output_channel_count),
+      main_output_port_type(clap::ext::audio_ports::parse_audio_port_type(
+          original.main_output_port_type)) {}
+
+void AudioPortsConfig::reconstruct(clap_audio_ports_config_t& config) const {
+    config = clap_audio_ports_config_t{};
+    config.id = id;
+    strlcpy_buffer<sizeof(config.name)>(config.name, name);
+    config.input_port_count = input_port_count;
+    config.output_port_count = output_port_count;
+    config.has_main_input = has_main_input;
+    config.main_input_channel_count = main_input_channel_count;
+    config.main_input_port_type =
+        clap::ext::audio_ports::audio_port_type_to_string(main_input_port_type);
+    config.has_main_output = has_main_output;
+    config.main_output_channel_count = main_output_channel_count;
+    config.main_output_port_type =
+        clap::ext::audio_ports::audio_port_type_to_string(
+            main_output_port_type);
+}
+
+}  // namespace audio_ports_config
+}  // namespace ext
+}  // namespace clap
diff --git a/src/common/serialization/clap/ext/audio-ports-config.h b/src/common/serialization/clap/ext/audio-ports-config.h
new file mode 100644
index 00000000..825094f3
--- /dev/null
+++ b/src/common/serialization/clap/ext/audio-ports-config.h
@@ -0,0 +1,167 @@
+// yabridge: a Wine plugin bridge
+// Copyright (C) 2020-2022 Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <optional>
+#include <string>
+#include <vector>
+
+#include <clap/ext/audio-ports-config.h>
+
+#include "../../../bitsery/ext/in-place-optional.h"
+#include "../../common.h"
+#include "audio-ports.h"
+
+// Serialization messages for `clap/ext/audio-ports-config.h`
+
+namespace clap {
+namespace ext {
+namespace audio_ports_config {
+
+/**
+ * A serializable version of `clap_audio_ports_config_t` that owns all of the
+ * data it references.
+ */
+struct AudioPortsConfig {
+    /**
+     * Parse a native `clap_audio_ports_config` struct so it can be serialized
+     * and sent to the Wine plugin host.
+     */
+    AudioPortsConfig(const clap_audio_ports_config_t& original);
+
+    /**
+     * Default constructor for bitsery.
+     */
+    AudioPortsConfig() {}
+
+    /**
+     * Write the stored configuration to a host provided struct.
+     */
+    void reconstruct(clap_audio_ports_config_t& config) const;
+
+    clap_id id;
+    std::string name;
+    uint32_t input_port_count;
+    uint32_t output_port_count;
+
+    bool has_main_input;
+    uint32_t main_input_channel_count;
+    clap::ext::audio_ports::AudioPortType main_input_port_type;
+
+    bool has_main_output;
+    uint32_t main_output_channel_count;
+    clap::ext::audio_ports::AudioPortType main_output_port_type;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value4b(id);
+        s.text1b(name, 4096);
+        s.value4b(input_port_count);
+        s.value4b(output_port_count);
+        s.value1b(has_main_input);
+        s.value4b(main_input_channel_count);
+        s.value4b(main_input_port_type);
+        s.value1b(has_main_output);
+        s.value4b(main_output_channel_count);
+        s.value4b(main_output_port_type);
+    }
+};
+
+namespace plugin {
+
+/**
+ * Message struct for `clap_plugin_audio_ports_config::count()`.
+ */
+struct Count {
+    using Response = PrimitiveResponse<uint32_t>;
+
+    native_size_t instance_id;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(instance_id);
+    }
+};
+
+/**
+ * The response to the `clap::ext::audio_ports_config::plugin::Get` message
+ * defined below.
+ */
+struct GetResponse {
+    std::optional<AudioPortsConfig> result;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.ext(result, bitsery::ext::InPlaceOptional());
+    }
+};
+
+/**
+ * Message struct for `clap_plugin_audio_ports_config::get()`.
+ */
+struct Get {
+    using Response = GetResponse;
+
+    native_size_t instance_id;
+    uint32_t index;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(instance_id);
+        s.value4b(index);
+    }
+};
+
+/**
+ * Message struct for `clap_plugin_audio_ports_config::select()`.
+ */
+struct Select {
+    using Response = PrimitiveResponse<bool>;
+
+    native_size_t instance_id;
+    clap_id config_id;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(instance_id);
+        s.value4b(config_id);
+    }
+};
+
+}  // namespace plugin
+
+namespace host {
+
+/**
+ * Message struct for `clap_host_audio_ports_config::rescan()`.
+ */
+struct Rescan {
+    using Response = Ack;
+
+    native_size_t owner_instance_id;
+
+    template <typename S>
+    void serialize(S& s) {
+        s.value8b(owner_instance_id);
+    }
+};
+
+}  // namespace host
+
+}  // namespace audio_ports_config
+}  // namespace ext
+}  // namespace clap
diff --git a/src/common/serialization/clap/ext/audio-ports.h b/src/common/serialization/clap/ext/audio-ports.h
index fdc93571..c3c94350 100644
--- a/src/common/serialization/clap/ext/audio-ports.h
+++ b/src/common/serialization/clap/ext/audio-ports.h
@@ -61,8 +61,8 @@ AudioPortType parse_audio_port_type(const char* port_type);
 const char* audio_port_type_to_string(AudioPortType port_type);
 
 /**
- * A serializable version of `clap_audio_port_info` that owns all of the data it
- * references.
+ * A serializable version of `clap_audio_port_info_t` that owns all of the data
+ * it references.
  */
 struct AudioPortInfo {
     /**
diff --git a/src/plugin/meson.build b/src/plugin/meson.build
index 7a3fe7ee..5fb94e59 100644
--- a/src/plugin/meson.build
+++ b/src/plugin/meson.build
@@ -78,6 +78,7 @@ if with_clap
     '../common/plugins.cpp',
     '../common/process.cpp',
     '../common/serialization/clap/ext/audio-ports.cpp',
+    '../common/serialization/clap/ext/audio-ports-config.cpp',
     '../common/serialization/clap/ext/note-ports.cpp',
     '../common/serialization/clap/ext/params.cpp',
     '../common/serialization/clap/events.cpp',
diff --git a/src/wine-host/meson.build b/src/wine-host/meson.build
index e4889a7a..7892e521 100644
--- a/src/wine-host/meson.build
+++ b/src/wine-host/meson.build
@@ -81,6 +81,7 @@ if with_clap
   host_sources += files(
     '../common/logging/clap.cpp',
     '../common/serialization/clap/ext/audio-ports.cpp',
+    '../common/serialization/clap/ext/audio-ports-config.cpp',
     '../common/serialization/clap/ext/note-ports.cpp',
     '../common/serialization/clap/ext/params.cpp',
     '../common/serialization/clap/events.cpp',