diff --git a/rpc/cc/arduino/cli/commands/v1/commands.pb.go b/rpc/cc/arduino/cli/commands/v1/commands.pb.go
index a6ece900340..a4420a413ec 100644
--- a/rpc/cc/arduino/cli/commands/v1/commands.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/commands.pb.go
@@ -37,6 +37,7 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+// Represent the reason why an instance initialization failed.
 type FailedInstanceInitReason int32
 
 const (
@@ -100,6 +101,7 @@ func (FailedInstanceInitReason) EnumDescriptor() ([]byte, []int) {
 	return file_cc_arduino_cli_commands_v1_commands_proto_rawDescGZIP(), []int{0}
 }
 
+// The status of the index update
 type IndexUpdateReport_Status int32
 
 const (
@@ -390,10 +392,12 @@ type isInitResponse_Message interface {
 }
 
 type InitResponse_InitProgress struct {
+	// The progress
 	InitProgress *InitResponse_Progress `protobuf:"bytes,1,opt,name=init_progress,json=initProgress,proto3,oneof"`
 }
 
 type InitResponse_Error struct {
+	// The error in case the instance initialization failed.
 	Error *status.Status `protobuf:"bytes,2,opt,name=error,proto3,oneof"`
 }
 
diff --git a/rpc/cc/arduino/cli/commands/v1/commands.proto b/rpc/cc/arduino/cli/commands/v1/commands.proto
index 68568900511..833c476d92a 100644
--- a/rpc/cc/arduino/cli/commands/v1/commands.proto
+++ b/rpc/cc/arduino/cli/commands/v1/commands.proto
@@ -179,6 +179,7 @@ service ArduinoCoreService {
   // Read the settings from a YAML file
   rpc ConfigurationOpen(ConfigurationOpenRequest) returns (ConfigurationOpenResponse);
 
+  // Get the current configuration
   rpc ConfigurationGet(ConfigurationGetRequest) returns (ConfigurationGetResponse);
 
   // Enumerate all the keys/values pairs available in the configuration
@@ -215,13 +216,16 @@ message InitResponse {
     TaskProgress task_progress = 2;
   }
   oneof message {
+    // The progress
     Progress init_progress = 1;
+    // The error in case the instance initialization failed.
     google.rpc.Status error = 2;
     // Selected profile information
     SketchProfile profile = 3;
   }
 }
 
+// Represent the reason why an instance initialization failed.
 enum FailedInstanceInitReason {
   // FAILED_INSTANCE_INIT_REASON_UNSPECIFIED the error reason is not specialized
   FAILED_INSTANCE_INIT_REASON_UNSPECIFIED = 0;
@@ -297,6 +301,7 @@ message UpdateLibrariesIndexResponse {
 }
 
 message IndexUpdateReport {
+  // The status of the index update
   enum Status {
     // The status of the index update is unspecified.
     STATUS_UNSPECIFIED = 0;
diff --git a/rpc/cc/arduino/cli/commands/v1/commands_grpc.pb.go b/rpc/cc/arduino/cli/commands/v1/commands_grpc.pb.go
index 25fc425643d..933be935e54 100644
--- a/rpc/cc/arduino/cli/commands/v1/commands_grpc.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/commands_grpc.pb.go
@@ -190,6 +190,7 @@ type ArduinoCoreServiceClient interface {
 	ConfigurationSave(ctx context.Context, in *ConfigurationSaveRequest, opts ...grpc.CallOption) (*ConfigurationSaveResponse, error)
 	// Read the settings from a YAML file
 	ConfigurationOpen(ctx context.Context, in *ConfigurationOpenRequest, opts ...grpc.CallOption) (*ConfigurationOpenResponse, error)
+	// Get the current configuration
 	ConfigurationGet(ctx context.Context, in *ConfigurationGetRequest, opts ...grpc.CallOption) (*ConfigurationGetResponse, error)
 	// Enumerate all the keys/values pairs available in the configuration
 	SettingsEnumerate(ctx context.Context, in *SettingsEnumerateRequest, opts ...grpc.CallOption) (*SettingsEnumerateResponse, error)
@@ -978,6 +979,7 @@ type ArduinoCoreServiceServer interface {
 	ConfigurationSave(context.Context, *ConfigurationSaveRequest) (*ConfigurationSaveResponse, error)
 	// Read the settings from a YAML file
 	ConfigurationOpen(context.Context, *ConfigurationOpenRequest) (*ConfigurationOpenResponse, error)
+	// Get the current configuration
 	ConfigurationGet(context.Context, *ConfigurationGetRequest) (*ConfigurationGetResponse, error)
 	// Enumerate all the keys/values pairs available in the configuration
 	SettingsEnumerate(context.Context, *SettingsEnumerateRequest) (*SettingsEnumerateResponse, error)
diff --git a/rpc/cc/arduino/cli/commands/v1/common.pb.go b/rpc/cc/arduino/cli/commands/v1/common.pb.go
index d98ce311b47..98902eb4305 100644
--- a/rpc/cc/arduino/cli/commands/v1/common.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/common.pb.go
@@ -162,14 +162,17 @@ type isDownloadProgress_Message interface {
 }
 
 type DownloadProgress_Start struct {
+	// Start of the download.
 	Start *DownloadProgressStart `protobuf:"bytes,1,opt,name=start,proto3,oneof"`
 }
 
 type DownloadProgress_Update struct {
+	// Update of the download.
 	Update *DownloadProgressUpdate `protobuf:"bytes,2,opt,name=update,proto3,oneof"`
 }
 
 type DownloadProgress_End struct {
+	// End of the download.
 	End *DownloadProgressEnd `protobuf:"bytes,3,opt,name=end,proto3,oneof"`
 }
 
@@ -1289,8 +1292,10 @@ type MonitorPortSetting struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// The setting id
 	SettingId string `protobuf:"bytes,1,opt,name=setting_id,json=settingId,proto3" json:"setting_id,omitempty"`
-	Value     string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	// The setting value
+	Value string `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
 }
 
 func (x *MonitorPortSetting) Reset() {
diff --git a/rpc/cc/arduino/cli/commands/v1/common.proto b/rpc/cc/arduino/cli/commands/v1/common.proto
index 99cd611bfde..a7b6646645e 100644
--- a/rpc/cc/arduino/cli/commands/v1/common.proto
+++ b/rpc/cc/arduino/cli/commands/v1/common.proto
@@ -27,8 +27,11 @@ message Instance {
 
 message DownloadProgress {
   oneof message {
+    // Start of the download.
     DownloadProgressStart start = 1;
+    // Update of the download.
     DownloadProgressUpdate update = 2;
+    // End of the download.
     DownloadProgressEnd end = 3;
   }
 }
@@ -214,7 +217,9 @@ message MonitorPortConfiguration {
 }
 
 message MonitorPortSetting {
+  // The setting id
   string setting_id = 1;
+  // The setting value
   string value = 2;
 }
 
diff --git a/rpc/cc/arduino/cli/commands/v1/compile.pb.go b/rpc/cc/arduino/cli/commands/v1/compile.pb.go
index c427fdcb5df..feca83e45ee 100644
--- a/rpc/cc/arduino/cli/commands/v1/compile.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/compile.pb.go
@@ -592,9 +592,12 @@ type ExecutableSectionSize struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Name    string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	Size    int64  `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
-	MaxSize int64  `protobuf:"varint,3,opt,name=max_size,json=maxSize,proto3" json:"max_size,omitempty"`
+	// The name of the executable section
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// The executable size
+	Size int64 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
+	// The exectuable maximum size
+	MaxSize int64 `protobuf:"varint,3,opt,name=max_size,json=maxSize,proto3" json:"max_size,omitempty"`
 }
 
 func (x *ExecutableSectionSize) Reset() {
diff --git a/rpc/cc/arduino/cli/commands/v1/compile.proto b/rpc/cc/arduino/cli/commands/v1/compile.proto
index f115e51c58f..4a8f9fffe6c 100644
--- a/rpc/cc/arduino/cli/commands/v1/compile.proto
+++ b/rpc/cc/arduino/cli/commands/v1/compile.proto
@@ -133,8 +133,11 @@ message BuilderResult {
 }
 
 message ExecutableSectionSize {
+  // The name of the executable section
   string name = 1;
+  // The executable size
   int64 size = 2;
+  // The exectuable maximum size
   int64 max_size = 3;
 }
 
diff --git a/rpc/cc/arduino/cli/commands/v1/core.pb.go b/rpc/cc/arduino/cli/commands/v1/core.pb.go
index 521c67209a0..f9e14713d1f 100644
--- a/rpc/cc/arduino/cli/commands/v1/core.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/core.pb.go
@@ -283,8 +283,9 @@ type PlatformDownloadRequest struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Arduino Core Service instance from the `Init` response.
-	Instance        *Instance `protobuf:"bytes,1,opt,name=instance,proto3" json:"instance,omitempty"`
-	PlatformPackage string    `protobuf:"bytes,2,opt,name=platform_package,json=platformPackage,proto3" json:"platform_package,omitempty"`
+	Instance *Instance `protobuf:"bytes,1,opt,name=instance,proto3" json:"instance,omitempty"`
+	// Vendor name of the platform (e.g., `arduino`).
+	PlatformPackage string `protobuf:"bytes,2,opt,name=platform_package,json=platformPackage,proto3" json:"platform_package,omitempty"`
 	// Architecture name of the platform (e.g., `avr`).
 	Architecture string `protobuf:"bytes,3,opt,name=architecture,proto3" json:"architecture,omitempty"`
 	// Platform version to download.
diff --git a/rpc/cc/arduino/cli/commands/v1/core.proto b/rpc/cc/arduino/cli/commands/v1/core.proto
index aa7f15f7172..7266e1b977f 100644
--- a/rpc/cc/arduino/cli/commands/v1/core.proto
+++ b/rpc/cc/arduino/cli/commands/v1/core.proto
@@ -61,6 +61,7 @@ message PlatformLoadingError {}
 message PlatformDownloadRequest {
   // Arduino Core Service instance from the `Init` response.
   Instance instance = 1;
+  // Vendor name of the platform (e.g., `arduino`).
   string platform_package = 2;
   // Architecture name of the platform (e.g., `avr`).
   string architecture = 3;
diff --git a/rpc/cc/arduino/cli/commands/v1/lib.pb.go b/rpc/cc/arduino/cli/commands/v1/lib.pb.go
index ad1871106fa..44329e83b19 100644
--- a/rpc/cc/arduino/cli/commands/v1/lib.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/lib.pb.go
@@ -36,6 +36,7 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+// The location where the library should be installed.
 type LibraryInstallLocation int32
 
 const (
@@ -85,6 +86,7 @@ func (LibraryInstallLocation) EnumDescriptor() ([]byte, []int) {
 	return file_cc_arduino_cli_commands_v1_lib_proto_rawDescGZIP(), []int{0}
 }
 
+// Represent the status of the library search.
 type LibrarySearchStatus int32
 
 const (
@@ -133,6 +135,7 @@ func (LibrarySearchStatus) EnumDescriptor() ([]byte, []int) {
 	return file_cc_arduino_cli_commands_v1_lib_proto_rawDescGZIP(), []int{1}
 }
 
+// Represent the library layout
 type LibraryLayout int32
 
 const (
@@ -181,6 +184,7 @@ func (LibraryLayout) EnumDescriptor() ([]byte, []int) {
 	return file_cc_arduino_cli_commands_v1_lib_proto_rawDescGZIP(), []int{2}
 }
 
+// Represent the location of the library
 type LibraryLocation int32
 
 const (
diff --git a/rpc/cc/arduino/cli/commands/v1/lib.proto b/rpc/cc/arduino/cli/commands/v1/lib.proto
index be87f46ac50..87cc7cc14eb 100644
--- a/rpc/cc/arduino/cli/commands/v1/lib.proto
+++ b/rpc/cc/arduino/cli/commands/v1/lib.proto
@@ -60,6 +60,7 @@ message LibraryInstallRequest {
   LibraryInstallLocation install_location = 6;
 }
 
+// The location where the library should be installed.
 enum LibraryInstallLocation {
   // In the `libraries` subdirectory of the user directory (sketchbook). This is
   // the default if not specified.
@@ -183,6 +184,7 @@ message LibrarySearchRequest {
   string search_args = 3;
 }
 
+// Represent the status of the library search.
 enum LibrarySearchStatus {
   // No search results were found.
   LIBRARY_SEARCH_STATUS_FAILED = 0;
@@ -355,6 +357,7 @@ message Library {
   bool in_development = 29;
 }
 
+// Represent the library layout
 enum LibraryLayout {
   // Library is in the 1.0 Arduino library format.
   LIBRARY_LAYOUT_FLAT = 0;
@@ -362,6 +365,7 @@ enum LibraryLayout {
   LIBRARY_LAYOUT_RECURSIVE = 1;
 }
 
+// Represent the location of the library
 enum LibraryLocation {
   // In the configured 'builtin.libraries' directory.
   LIBRARY_LOCATION_BUILTIN = 0;
diff --git a/rpc/cc/arduino/cli/commands/v1/settings.pb.go b/rpc/cc/arduino/cli/commands/v1/settings.pb.go
index c4f4d548d1a..417e4290697 100644
--- a/rpc/cc/arduino/cli/commands/v1/settings.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/settings.pb.go
@@ -43,17 +43,28 @@ type Configuration struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Directories  *Configuration_Directories  `protobuf:"bytes,1,opt,name=directories,proto3" json:"directories,omitempty"`
-	Network      *Configuration_Network      `protobuf:"bytes,2,opt,name=network,proto3" json:"network,omitempty"`
-	Sketch       *Configuration_Sketch       `protobuf:"bytes,3,opt,name=sketch,proto3" json:"sketch,omitempty"`
-	BuildCache   *Configuration_BuildCache   `protobuf:"bytes,4,opt,name=build_cache,json=buildCache,proto3" json:"build_cache,omitempty"`
+	// The configuration for the instance
+	Directories *Configuration_Directories `protobuf:"bytes,1,opt,name=directories,proto3" json:"directories,omitempty"`
+	// The network configuration
+	Network *Configuration_Network `protobuf:"bytes,2,opt,name=network,proto3" json:"network,omitempty"`
+	// The sketch configuration
+	Sketch *Configuration_Sketch `protobuf:"bytes,3,opt,name=sketch,proto3" json:"sketch,omitempty"`
+	// The build cache configuration
+	BuildCache *Configuration_BuildCache `protobuf:"bytes,4,opt,name=build_cache,json=buildCache,proto3" json:"build_cache,omitempty"`
+	// The board manager configuration
 	BoardManager *Configuration_BoardManager `protobuf:"bytes,5,opt,name=board_manager,json=boardManager,proto3" json:"board_manager,omitempty"`
-	Daemon       *Configuration_Daemon       `protobuf:"bytes,6,opt,name=daemon,proto3" json:"daemon,omitempty"`
-	Output       *Configuration_Output       `protobuf:"bytes,7,opt,name=output,proto3" json:"output,omitempty"`
-	Logging      *Configuration_Logging      `protobuf:"bytes,8,opt,name=logging,proto3" json:"logging,omitempty"`
-	Library      *Configuration_Library      `protobuf:"bytes,9,opt,name=library,proto3" json:"library,omitempty"`
-	Updater      *Configuration_Updater      `protobuf:"bytes,10,opt,name=updater,proto3" json:"updater,omitempty"`
-	Locale       *string                     `protobuf:"bytes,100,opt,name=locale,proto3,oneof" json:"locale,omitempty"`
+	// The daemon configuration
+	Daemon *Configuration_Daemon `protobuf:"bytes,6,opt,name=daemon,proto3" json:"daemon,omitempty"`
+	// The output configuration
+	Output *Configuration_Output `protobuf:"bytes,7,opt,name=output,proto3" json:"output,omitempty"`
+	// The logging configuration
+	Logging *Configuration_Logging `protobuf:"bytes,8,opt,name=logging,proto3" json:"logging,omitempty"`
+	// The library configuration
+	Library *Configuration_Library `protobuf:"bytes,9,opt,name=library,proto3" json:"library,omitempty"`
+	// The updater configuration
+	Updater *Configuration_Updater `protobuf:"bytes,10,opt,name=updater,proto3" json:"updater,omitempty"`
+	// The language locale
+	Locale *string `protobuf:"bytes,100,opt,name=locale,proto3,oneof" json:"locale,omitempty"`
 }
 
 func (x *Configuration) Reset() {
diff --git a/rpc/cc/arduino/cli/commands/v1/settings.proto b/rpc/cc/arduino/cli/commands/v1/settings.proto
index 26bb820c2b5..641260deac5 100644
--- a/rpc/cc/arduino/cli/commands/v1/settings.proto
+++ b/rpc/cc/arduino/cli/commands/v1/settings.proto
@@ -83,17 +83,28 @@ message Configuration {
     bool enable_notification = 1;
   }
 
+  // The configuration for the instance
   Directories directories = 1;
+  // The network configuration
   Network network = 2;
+  // The sketch configuration
   Sketch sketch = 3;
+  // The build cache configuration
   BuildCache build_cache = 4;
+  // The board manager configuration
   BoardManager board_manager = 5;
+  // The daemon configuration
   Daemon daemon = 6;
+  // The output configuration
   Output output = 7;
+  // The logging configuration
   Logging logging = 8;
+  // The library configuration
   Library library = 9;
+  // The updater configuration
   Updater updater = 10;
 
+  // The language locale
   optional string locale = 100;
 }
 
diff --git a/rpc/cc/arduino/cli/commands/v1/upload.pb.go b/rpc/cc/arduino/cli/commands/v1/upload.pb.go
index 4aec77f0105..7b0537de836 100644
--- a/rpc/cc/arduino/cli/commands/v1/upload.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/upload.pb.go
@@ -838,8 +838,10 @@ type ListProgrammersAvailableForUploadRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Arduino Core Service instance from the `Init` response.
 	Instance *Instance `protobuf:"bytes,1,opt,name=instance,proto3" json:"instance,omitempty"`
-	Fqbn     string    `protobuf:"bytes,2,opt,name=fqbn,proto3" json:"fqbn,omitempty"`
+	// Fully qualified board name of the target board (e.g., `arduino:avr:uno`).
+	Fqbn string `protobuf:"bytes,2,opt,name=fqbn,proto3" json:"fqbn,omitempty"`
 }
 
 func (x *ListProgrammersAvailableForUploadRequest) Reset() {
@@ -893,6 +895,7 @@ type ListProgrammersAvailableForUploadResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// List of programmers supported by the board
 	Programmers []*Programmer `protobuf:"bytes,1,rep,name=programmers,proto3" json:"programmers,omitempty"`
 }
 
@@ -940,8 +943,10 @@ type SupportedUserFieldsRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Arduino Core Service instance from the `Init` response.
 	Instance *Instance `protobuf:"bytes,1,opt,name=instance,proto3" json:"instance,omitempty"`
-	Fqbn     string    `protobuf:"bytes,2,opt,name=fqbn,proto3" json:"fqbn,omitempty"`
+	// Fully qualified board name of the target board (e.g., `arduino:avr:uno`).
+	Fqbn string `protobuf:"bytes,2,opt,name=fqbn,proto3" json:"fqbn,omitempty"`
 	// Protocol that will be used to upload, this information is
 	// necessary to pick the right upload tool for the board specified
 	// with the FQBN.
diff --git a/rpc/cc/arduino/cli/commands/v1/upload.proto b/rpc/cc/arduino/cli/commands/v1/upload.proto
index a1196161020..ddda8c60741 100644
--- a/rpc/cc/arduino/cli/commands/v1/upload.proto
+++ b/rpc/cc/arduino/cli/commands/v1/upload.proto
@@ -168,16 +168,21 @@ message BurnBootloaderResponse {
 }
 
 message ListProgrammersAvailableForUploadRequest {
+  // Arduino Core Service instance from the `Init` response.
   Instance instance = 1;
+  // Fully qualified board name of the target board (e.g., `arduino:avr:uno`).
   string fqbn = 2;
 }
 
 message ListProgrammersAvailableForUploadResponse {
+  // List of programmers supported by the board
   repeated Programmer programmers = 1;
 }
 
 message SupportedUserFieldsRequest {
+  // Arduino Core Service instance from the `Init` response.
   Instance instance = 1;
+  // Fully qualified board name of the target board (e.g., `arduino:avr:uno`).
   string fqbn = 2;
   // Protocol that will be used to upload, this information is
   // necessary to pick the right upload tool for the board specified