diff --git a/crates/evops-models/src/lib.rs b/crates/evops-models/src/lib.rs
index b0e9443..cb347f0 100644
--- a/crates/evops-models/src/lib.rs
+++ b/crates/evops-models/src/lib.rs
@@ -1,3 +1,4 @@
+pub use self::common::{PgLimit, PgLimitError};
 pub use self::error::{ApiError, ApiResult};
 pub use self::services::event::{
     EVENT_DESCRIPTION_MAX_LEN, EVENT_DESCRIPTION_MIN_LEN, EVENT_MAX_IMAGES, EVENT_MAX_TAGS,
@@ -6,6 +7,9 @@ pub use self::services::event::{
     EventTagIds, EventTagIdsError, EventTags, EventTagsError, EventTitle, EventTitleError,
     NewEventForm,
 };
+pub use self::services::language::{
+    LANGUAGE_MAX_LEN, LANGUAGE_MIN_LEN, Language, LanguageId, LanguageName, LanguageNameError,
+};
 pub use self::services::tag::{
     NewTagForm, TAG_ALIAS_MAX_LEN, TAG_ALIAS_MIN_LEN, TAG_MAX_ALIASES, TAG_NAME_MAX_LEN,
     TAG_NAME_MIN_LEN, TAG_NAME_REGEX, Tag, TagAlias, TagAliasError, TagAliases, TagAliasesError,
@@ -15,8 +19,6 @@ pub use self::services::user::{
     NewUserForm, USER_NAME_MAX_LEN, USER_NAME_MIN_LEN, User, UserId, UserName, UserNameError,
 };
 
-pub use self::common::{PgLimit, PgLimitError};
-
 mod common;
 mod error;
 mod services;
diff --git a/crates/evops-models/src/services.rs b/crates/evops-models/src/services.rs
index 7ad3484..9650c9f 100644
--- a/crates/evops-models/src/services.rs
+++ b/crates/evops-models/src/services.rs
@@ -1,3 +1,4 @@
 pub mod event;
+pub mod language;
 pub mod tag;
 pub mod user;
diff --git a/crates/evops-models/src/services/language.rs b/crates/evops-models/src/services/language.rs
new file mode 100644
index 0000000..05762d1
--- /dev/null
+++ b/crates/evops-models/src/services/language.rs
@@ -0,0 +1,16 @@
+use nutype::nutype;
+use uuid::Uuid;
+
+#[nutype(derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Display))]
+pub struct LanguageId(Uuid);
+
+pub const LANGUAGE_MIN_LEN: usize = 1;
+pub const LANGUAGE_MAX_LEN: usize = 32;
+
+#[nutype(new_unchecked, validate(len_char_max = LANGUAGE_MAX_LEN, not_empty), derive(Debug))]
+pub struct LanguageName(String);
+
+pub struct Language {
+    pub id: LanguageId,
+    pub name: LanguageName,
+}
diff --git a/proto/evops/api/v1/api.proto b/proto/evops/api/v1/api.proto
index 65470c7..a2dc907 100644
--- a/proto/evops/api/v1/api.proto
+++ b/proto/evops/api/v1/api.proto
@@ -19,6 +19,11 @@ service EventService {
       returns (stream EventServiceFindImageResponse);
 }
 
+service LanguageService {
+  // Adds a new language to the system.
+  rpc Add(LanguageServiceAddRequest) returns (LanguageServiceAddResponse);
+}
+
 // Manages event tags.
 service TagService {
   // Lists all tags.
@@ -28,7 +33,8 @@ service TagService {
   // Retrieves a tag by ID.
   rpc Find(TagServiceFindRequest) returns (TagServiceFindResponse);
   // Get relevant tag IDs for an event description.
-  rpc GetTagsByDescription(TagServiceGetTagsByDescriptionRequest) returns (TagServiceGetTagsByDescriptionResponse);
+  rpc GetTagsByDescription(TagServiceGetTagsByDescriptionRequest)
+      returns (TagServiceGetTagsByDescriptionResponse);
 }
 
 // Manages user accounts.
@@ -41,6 +47,16 @@ service UserService {
   rpc Find(UserServiceFindRequest) returns (UserServiceFindResponse);
 }
 
+message LanguageServiceAddRequest {
+  // Name of the new language.
+  string name = 1;
+}
+
+message LanguageServiceAddResponse {
+  // UUID of the added language.
+  string language_id = 1;
+}
+
 message TagServiceGetTagsByDescriptionRequest {
   // Description to predict tags for.
   string description = 1;