diff --git a/src/modules/episode/controllers/getAllEpisodeFromSpecificMedia.controller.ts b/src/modules/episode/controllers/getAllEpisodeFromSpecificMedia.controller.ts
index 6388a85..443a99b 100644
--- a/src/modules/episode/controllers/getAllEpisodeFromSpecificMedia.controller.ts
+++ b/src/modules/episode/controllers/getAllEpisodeFromSpecificMedia.controller.ts
@@ -3,6 +3,38 @@ import { mainErrorHandler } from "../../../helpers/error/handler";
 import { returnReadResponse } from "../../../helpers/callback/httpResponse";
 import { getAllEpisodeFromSpecificMediaService } from "../services/http/getAllEpisodeFromSpecificMedia.service";
 
+/**
+ * @function getAllEpisodeFromSpecificMediaController
+ * @description Controller to handle fetching all episodes associated with a specific media slug.
+ *
+ * @param {Context & { params: { mediaSlug: string } }} ctx
+ * The context object containing the request body.
+ * The params must include:
+ * - mediaSlug: string - The slug of the media to which the episode belongs.
+ *
+ * @example
+ * Request route: GET /episodes/:mediaSlug
+ *
+ * @returns {Promise<Object>}
+ * A response object indicating success or failure.
+ * Return example:
+ * {
+ *   success: true,
+ *   status: 200,
+ *   message: "Episodes fetched successfully.",
+ *   data: { ...episodeDetails } // Data returned only if the env run on development mode
+ * }
+ *
+ * @throws {Object}
+ * An error response object if validation fails or an error occurs during bulk insert operation.
+ * Return example:
+ * {
+ *   success: false,
+ *   status: <Status Code>,
+ *   message: "<Error Message>",
+ *   error: { ...errorDetails } // Additional error details if available and the env run on development mode
+ * }
+ */
 export const getAllEpisodeFromSpecificMediaController = async (
   ctx: Context & { params: { mediaSlug: string } },
 ) => {
diff --git a/src/modules/episode/controllers/getEpisodeDetails.controller.ts b/src/modules/episode/controllers/getEpisodeDetails.controller.ts
index a1f83f1..35982cd 100644
--- a/src/modules/episode/controllers/getEpisodeDetails.controller.ts
+++ b/src/modules/episode/controllers/getEpisodeDetails.controller.ts
@@ -8,6 +8,39 @@ export interface GetEpisodeDetailsParams {
   episode?: string;
 }
 
+/**
+ * @function getEpisodeDetailsController
+ * @description Controller to handle fetching episode details based on provided parameters.
+ *
+ * @param {Context & { params: GetEpisodeDetailsParams }} ctx
+ * The context object containing the request body.
+ * The params must include:
+ * - mediaSlug?: string - The slug of the media to which the episode belongs.
+ * - episode?: string - The identifier of the episode.
+ *
+ * @example
+ * Request route: GET /episodes/:mediaSlug/:episode
+ *
+ * @returns {Promise<Object>}
+ * A response object indicating success or failure.
+ * Return example:
+ * {
+ *   success: true,
+ *   status: 200,
+ *   message: "Episode details fetched successfully.",
+ *   data: { ...episodeDetails } // Data returned only if the env run on development mode
+ * }
+ *
+ * @throws {Object}
+ * An error response object if validation fails or an error occurs during bulk insert operation.
+ * Return example:
+ * {
+ *   success: false,
+ *   status: <Status Code>,
+ *   message: "<Error Message>",
+ *   error: { ...errorDetails } // Additional error details if available and the env run on development mode
+ * }
+ */
 export const getEpisodeDetailsController = async (
   ctx: Context & { params: GetEpisodeDetailsParams },
 ) => {
diff --git a/src/modules/internal/controllers/updateAllEpisodeThumbnail.controller.ts b/src/modules/internal/controllers/updateAllEpisodeThumbnail.controller.ts
index 0e58fed..5a89369 100644
--- a/src/modules/internal/controllers/updateAllEpisodeThumbnail.controller.ts
+++ b/src/modules/internal/controllers/updateAllEpisodeThumbnail.controller.ts
@@ -3,6 +3,41 @@ import { mainErrorHandler } from "../../../helpers/error/handler";
 import { returnWriteResponse } from "../../../helpers/callback/httpResponse";
 import { updateAllEpisodeThumbnailService } from "../services/http/updateAllEpisodeThumbnail.service";
 
+/**
+ * @function updateAllEpisodeThumbnailController
+ * @description Controller to handle the bulk updating of episode thumbnails for all episodes associated with a specific service reference ID.
+ *
+ * @param {Context & { body: { service_reference_id: string } }} ctx
+ * The context object containing the request body.
+ * The body must include:
+ * - service_reference_id: string - The ID of the service to which the episodes belong.
+ *
+ * @example
+ * Request route: PUT /internal/episode/update-thumbnails
+ * Request body:
+ * {
+ *   "service_reference_id": "019c0df6-f8fe-7565-82cd-9c29b20232ab"
+ * },
+ *
+ * @returns {Promise<Object>}
+ * A response object indicating success or failure.
+ * Return example:
+ * {
+ *   success: true,
+ *   status: 204,
+ *   message: "Updating {newEpisodeThumbnailsCount} episode thumbnails successfully.",
+ * }
+ *
+ * @throws {Object}
+ * An error response object if validation fails or an error occurs during bulk insert operation.
+ * Return example:
+ * {
+ *   success: false,
+ *   status: <Status Code>,
+ *   message: "<Error Message>",
+ *   error: { ...errorDetails } // Additional error details if available and the env run on development mode
+ * }
+ */
 export const updateAllEpisodeThumbnailController = async (
   ctx: Context & { body: { service_reference_id: string } },
 ) => {
diff --git a/src/modules/internal/index.ts b/src/modules/internal/index.ts
index f80574b..683667b 100644
--- a/src/modules/internal/index.ts
+++ b/src/modules/internal/index.ts
@@ -8,6 +8,6 @@ import { updateAllEpisodeThumbnailController } from "./controllers/updateAllEpis
 export const internalModule = new Elysia({ prefix: "/internal" })
   .post("/media/bulk-insert", bulkInsertMediaController)
   .post("/episode/bulk-insert", bulkInsertEpisodeController)
-  .post("/episode/update-thumbnails", updateAllEpisodeThumbnailController)
+  .put("/episode/update-thumbnails", updateAllEpisodeThumbnailController)
   .post("/video/bulk-insert", bulkInsertVideoController)
   .post("/video-service", createVideoServiceInternalController);