diff --git a/arduino/libraries/libraries.go b/arduino/libraries/libraries.go
index 3db9596e24d..b141d03fdf0 100644
--- a/arduino/libraries/libraries.go
+++ b/arduino/libraries/libraries.go
@@ -74,6 +74,7 @@ type Library struct {
 	PrecompiledWithSources bool
 	LDflags                string
 	IsLegacy               bool
+	InDevelopment          bool
 	Version                *semver.Version
 	License                string
 	Properties             *properties.Map
@@ -136,6 +137,7 @@ func (library *Library) ToRPCLibrary() (*rpc.Library, error) {
 		Precompiled:       library.Precompiled,
 		LdFlags:           library.LDflags,
 		IsLegacy:          library.IsLegacy,
+		InDevelopment:     library.InDevelopment,
 		Version:           library.Version.String(),
 		License:           library.License,
 		Examples:          library.Examples.AsStrings(),
diff --git a/arduino/libraries/libraries_test.go b/arduino/libraries/libraries_test.go
index 09461790f8a..07d6c642c9e 100644
--- a/arduino/libraries/libraries_test.go
+++ b/arduino/libraries/libraries_test.go
@@ -19,6 +19,7 @@ import (
 	"encoding/json"
 	"testing"
 
+	paths "github.com/arduino/go-paths-helper"
 	"github.com/stretchr/testify/require"
 )
 
@@ -48,3 +49,22 @@ func TestLibLayoutAndLocationJSONUnMarshaler(t *testing.T) {
 	testLocation(User)
 	testLocation(Unmanaged)
 }
+
+func TestLibrariesLoader(t *testing.T) {
+	{
+		lib, err := Load(paths.New("testdata", "TestLib"), User)
+		require.NoError(t, err)
+		require.Equal(t, "TestLib", lib.Name)
+		require.Equal(t, "1.0.3", lib.Version.String())
+		require.False(t, lib.IsLegacy)
+		require.False(t, lib.InDevelopment)
+	}
+	{
+		lib, err := Load(paths.New("testdata", "TestLibInDev"), User)
+		require.NoError(t, err)
+		require.Equal(t, "TestLibInDev", lib.Name)
+		require.Equal(t, "1.0.3", lib.Version.String())
+		require.False(t, lib.IsLegacy)
+		require.True(t, lib.InDevelopment)
+	}
+}
diff --git a/arduino/libraries/loader.go b/arduino/libraries/loader.go
index 86309d7252b..30c1822bfaa 100644
--- a/arduino/libraries/loader.go
+++ b/arduino/libraries/loader.go
@@ -121,7 +121,7 @@ func makeNewLibrary(libraryDir *paths.Path, location LibraryLocation) (*Library,
 	library.Precompiled = libProperties.Get("precompiled") == "true" || library.PrecompiledWithSources
 	library.LDflags = strings.TrimSpace(libProperties.Get("ldflags"))
 	library.Properties = libProperties
-
+	library.InDevelopment = libraryDir.Join(".development").Exist()
 	return library, nil
 }
 
@@ -136,6 +136,7 @@ func makeLegacyLibrary(path *paths.Path, location LibraryLocation) (*Library, er
 		Architectures: []string{"*"},
 		IsLegacy:      true,
 		Version:       semver.MustParse(""),
+		InDevelopment: path.Join(".development").Exist(),
 	}
 	if err := addExamples(library); err != nil {
 		return nil, errors.Errorf(tr("scanning examples: %s"), err)
diff --git a/arduino/libraries/testdata/TestLib/library.properties b/arduino/libraries/testdata/TestLib/library.properties
new file mode 100644
index 00000000000..030d3472039
--- /dev/null
+++ b/arduino/libraries/testdata/TestLib/library.properties
@@ -0,0 +1,9 @@
+name=TestLib
+version=1.0.3
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=A test lib
+paragraph=very powerful!
+category=Device Control
+url=http://www.arduino.cc/en/Reference/TestLib
+architectures=avr
\ No newline at end of file
diff --git a/arduino/libraries/testdata/TestLib/src/TestLib.h b/arduino/libraries/testdata/TestLib/src/TestLib.h
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/arduino/libraries/testdata/TestLibInDev/.development b/arduino/libraries/testdata/TestLibInDev/.development
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/arduino/libraries/testdata/TestLibInDev/library.properties b/arduino/libraries/testdata/TestLibInDev/library.properties
new file mode 100644
index 00000000000..c11bda4ccdb
--- /dev/null
+++ b/arduino/libraries/testdata/TestLibInDev/library.properties
@@ -0,0 +1,9 @@
+name=TestLibInDev
+version=1.0.3
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=A test lib
+paragraph=very powerful!
+category=Device Control
+url=http://www.arduino.cc/en/Reference/TestLib
+architectures=avr
\ No newline at end of file
diff --git a/arduino/libraries/testdata/TestLibInDev/src/TestLib.h b/arduino/libraries/testdata/TestLibInDev/src/TestLib.h
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/docs/library-specification.md b/docs/library-specification.md
index 1d0373b2e9c..1e7e1f9ea2f 100644
--- a/docs/library-specification.md
+++ b/docs/library-specification.md
@@ -359,9 +359,9 @@ In Arduino IDE 1.6.5 and newer this field overrides `KEYWORD_TOKENTYPE`. In prev
 Normally the Arduino IDE treats the contents of the library folder as read-only. This is to prevent users from
 accidentally modifying example sketches. During the library development process you may want to edit example sketches in
 place using the Arduino IDE. With Arduino IDE 1.6.6 and newer, the read-only behavior can be disabled by adding a file
-named .development to the root of the library folder. A [library.properties](#libraryproperties-file-format) file must
+named `.development` to the root of the library folder. A [library.properties](#libraryproperties-file-format) file must
 also be present. The [Library Manager indexer](https://github.com/arduino/library-registry/blob/main/FAQ.md#readme) will
-not pick up releases that contain a .development file so be sure not to push this file to your remote repository.
+not pick up releases that contain a `.development` file so be sure not to push this file to your remote repository.
 
 ### A complete example
 
diff --git a/rpc/cc/arduino/cli/commands/v1/lib.pb.go b/rpc/cc/arduino/cli/commands/v1/lib.pb.go
index 2bc7b2ac3b7..02be303b665 100644
--- a/rpc/cc/arduino/cli/commands/v1/lib.pb.go
+++ b/rpc/cc/arduino/cli/commands/v1/lib.pb.go
@@ -1769,6 +1769,9 @@ type Library struct {
 	ProvidesIncludes []string `protobuf:"bytes,27,rep,name=provides_includes,json=providesIncludes,proto3" json:"provides_includes,omitempty"`
 	// Map of FQBNs that specifies if library is compatible with this library
 	CompatibleWith map[string]bool `protobuf:"bytes,28,rep,name=compatible_with,json=compatibleWith,proto3" json:"compatible_with,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	// This value is set to true if the library is in development and should not
+	// be treated as read-only.
+	InDevelopment bool `protobuf:"varint,29,opt,name=in_development,json=inDevelopment,proto3" json:"in_development,omitempty"`
 }
 
 func (x *Library) Reset() {
@@ -1978,6 +1981,13 @@ func (x *Library) GetCompatibleWith() map[string]bool {
 	return nil
 }
 
+func (x *Library) GetInDevelopment() bool {
+	if x != nil {
+		return x.InDevelopment
+	}
+	return false
+}
+
 type ZipLibraryInstallRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2452,7 +2462,7 @@ var file_cc_arduino_cli_commands_v1_lib_proto_rawDesc = []byte{
 	0x32, 0x2a, 0x2e, 0x63, 0x63, 0x2e, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x2e, 0x63, 0x6c,
 	0x69, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x73, 0x2e, 0x76, 0x31, 0x2e, 0x4c, 0x69,
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+	0x6c, 0x65, 0x61, 0x73, 0x65, 0x22, 0xf8, 0x08, 0x0a, 0x07, 0x4c, 0x69, 0x62, 0x72, 0x61, 0x72,
 	0x79, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x18,
 	0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x61, 0x75, 0x74, 0x68, 0x6f, 0x72, 0x12, 0x1e, 0x0a,
@@ -2513,80 +2523,83 @@ var file_cc_arduino_cli_commands_v1_lib_proto_rawDesc = []byte{
 	0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x73, 0x2e, 0x76, 0x31, 0x2e, 0x4c, 0x69, 0x62, 0x72,
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 }
 
 var (
diff --git a/rpc/cc/arduino/cli/commands/v1/lib.proto b/rpc/cc/arduino/cli/commands/v1/lib.proto
index 14274996e7a..220f5301a4f 100644
--- a/rpc/cc/arduino/cli/commands/v1/lib.proto
+++ b/rpc/cc/arduino/cli/commands/v1/lib.proto
@@ -305,6 +305,10 @@ message Library {
   repeated string provides_includes = 27;
   // Map of FQBNs that specifies if library is compatible with this library
   map<string, bool> compatible_with = 28;
+  // This value is set to true if the library is in development and should not
+  // be treated as read-only. This status is determined by the presence of a
+  // `.development` file in the library root directory.
+  bool in_development = 29;
 }
 
 enum LibraryLayout {