diff --git a/packages/ts/models/src/builders.ts b/packages/ts/models/src/builders.ts
index 4879a6a5fd..c734228979 100644
--- a/packages/ts/models/src/builders.ts
+++ b/packages/ts/models/src/builders.ts
@@ -14,6 +14,9 @@ import {
 
 const { create, defineProperty } = Object;
 
+/**
+ * The options for creating the model property.
+ */
 export type ModelBuilderPropertyOptions = Readonly<{
   meta?: ModelMetadata;
 }>;
@@ -49,12 +52,6 @@ export type Flags = {
  * @typeParam EX - The extra properties of the model.
  * @typeParam F - The flags for the model constructor that allow to determine
  * specific characteristics of the model.
- *
- * @param base - The base model to extend.
- * @param defaultValueProvider - The function that provides the default value
- * for the model.
- *
- * @internal
  */
 export class CoreModelBuilder<
   V,
@@ -63,6 +60,11 @@ export class CoreModelBuilder<
 > {
   protected readonly [$model]: Model<V, EX>;
 
+  /**
+   * @param base - The base model to extend.
+   * @param defaultValueProvider - The function that provides the default value
+   * for the model.
+   */
   constructor(base: Model, defaultValueProvider?: (model: Model<V, EX>) => V) {
     this[$model] = create(base);
 
@@ -163,9 +165,6 @@ const propertyRegistry = new WeakMap<Model, Record<string, Model>>();
  * @typeParam EX - The extra properties of the model.
  * @typeParam F - The flags for the model constructor that allow to determine
  * specific characteristics of the model.
- *
- *
- * @internal
  */
 export class ObjectModelBuilder<
   V extends AnyObject,
diff --git a/packages/ts/models/src/core.ts b/packages/ts/models/src/core.ts
index 69f0540c10..289a227844 100644
--- a/packages/ts/models/src/core.ts
+++ b/packages/ts/models/src/core.ts
@@ -2,18 +2,33 @@ import type { EmptyObject } from 'type-fest';
 import { CoreModelBuilder } from './builders.js';
 import { $enum, $itemModel, type $members, type AnyObject, type Enum, Model, type Value } from './model.js';
 
+/**
+ * The model of a primitive value, like `string`, `number` or `boolean`.
+ */
 export type PrimitiveModel<V = unknown> = Model<V>;
 export const PrimitiveModel = new CoreModelBuilder(Model, (): unknown => undefined).name('primitive').build();
 
+/**
+ * The model of a string value.
+ */
 export type StringModel = PrimitiveModel<string>;
 export const StringModel = new CoreModelBuilder(PrimitiveModel, () => '').name('string').build();
 
+/**
+ * The model of a number value.
+ */
 export type NumberModel = PrimitiveModel<number>;
 export const NumberModel = new CoreModelBuilder(PrimitiveModel, () => 0).name('number').build();
 
+/**
+ * The model of a boolean value.
+ */
 export type BooleanModel = PrimitiveModel<boolean>;
 export const BooleanModel = new CoreModelBuilder(PrimitiveModel, () => false).name('boolean').build();
 
+/**
+ * The model of an array data.
+ */
 export type ArrayModel<M extends Model = Model> = Model<
   Array<Value<M>>,
   Readonly<{
@@ -26,10 +41,16 @@ export const ArrayModel = new CoreModelBuilder(Model, (): unknown[] => [])
   .define($itemModel, { value: Model })
   .build();
 
+/**
+ * The model of an object data.
+ */
 export type ObjectModel<V, EX extends AnyObject = EmptyObject, R extends keyof any = never> = Model<V, EX, R>;
 
 export const ObjectModel = new CoreModelBuilder(Model, (): AnyObject => ({})).name('Object').build();
 
+/**
+ * The model of an enum data.
+ */
 export type EnumModel<T extends typeof Enum> = Model<
   T[keyof T],
   Readonly<{
@@ -44,4 +65,7 @@ export const EnumModel = new CoreModelBuilder<(typeof Enum)[keyof typeof Enum]>(
   .defaultValueProvider((self) => Object.values(self[$enum])[0])
   .build();
 
+/**
+ * The model of a union data.
+ */
 export type UnionModel<MM extends Model[]> = Model<Value<MM[number]>, Readonly<{ [$members]: MM }>>;
diff --git a/packages/ts/models/src/index.ts b/packages/ts/models/src/index.ts
index caf03445c4..bd137cec73 100644
--- a/packages/ts/models/src/index.ts
+++ b/packages/ts/models/src/index.ts
@@ -22,6 +22,7 @@ import {
 
 export * from './model.js';
 export * from './core.js';
+export type * from './builders.js';
 
 const { defineProperty } = Object;
 
@@ -41,7 +42,18 @@ function getRawValue<T>(model: Model<T>): T | typeof nothing {
   return (model[$owner] as Target<T>).value;
 }
 
+/**
+ * The utility object that provides methods to create and manipulate models.
+ */
 const m = {
+  /**
+   * Attaches the given model to the target.
+   *
+   * @param model - The model to attach.
+   * @param target - The target to attach the model to. It could be a Binder
+   * instance, a Signal, or another object. However, it could never be another
+   * model.
+   */
   attach<M extends Model>(model: M, target: Target<Value<M>>): M {
     const _model = new CoreModelBuilder<Value<M>, Extensions<M>, { named: false; selfRefKeys: References<M> }>(model)
       .name(`@${model[$name]}`)
diff --git a/packages/ts/models/src/model.ts b/packages/ts/models/src/model.ts
index b30093bd46..a2d83f5b6e 100644
--- a/packages/ts/models/src/model.ts
+++ b/packages/ts/models/src/model.ts
@@ -45,19 +45,67 @@ export declare enum Enum {}
 
 export type AnyObject = Readonly<Record<never, never>>; // {}
 
+/* eslint-disable tsdoc/syntax */
+/**
+ * The symbol that represents the {@link Model[$key]} property.
+ */
 export const $key = Symbol('key');
+
+/**
+ * The symbol that represents the {@link Model[$name]} property.
+ */
 export const $name = Symbol('name');
+
+/**
+ * The symbol that represents the {@link Model[$owner]} property.
+ */
 export const $owner = Symbol('owner');
+
+/**
+ * The symbol that represents the {@link Model[$meta]} property.
+ */
 export const $meta = Symbol('meta');
+
+/**
+ * The symbol that represents the {@link Model[$optional]} property.
+ */
 export const $optional = Symbol('optional');
+
+/**
+ * The symbol that represents the {@link Model[$value]} property.
+ */
 export const $defaultValue = Symbol('value');
 
-export const $enum = Symbol('enum');
+/**
+ * The symbol that represents the {@link EnumModel[$enumerate]} property.
+ */
+export const $enum = Symbol('enumerate');
+
+/**
+ * The symbol that represents the {@link UnionModel[$members]} property.
+ */
 export const $members = Symbol('members');
+
+/**
+ * The symbol that represents the {@link ArrayModel[$itemModel]} property.
+ */
 export const $itemModel = Symbol('itemModel');
 
+/* eslint-enable tsdoc/syntax */
+
+/**
+ * Extracts the value type the model represents.
+ */
 export type Value<M extends Model> = M extends Model<infer T> ? T : never;
+
+/**
+ * Extracts the list of extra properties of the model.
+ */
 export type Extensions<M extends Model> = M extends Model<unknown, infer EX> ? EX : EmptyObject;
+
+/**
+ * Extracts the list of self-referencing properties of the model.
+ */
 export type References<M extends Model> = M extends Model<unknown, AnyObject, infer R> ? R : never;
 
 /**