diff --git a/src/services/comments/beer-comment/index.ts b/src/services/comments/beer-comment/index.ts
index d4fd6f1..b884f5a 100644
--- a/src/services/comments/beer-comment/index.ts
+++ b/src/services/comments/beer-comment/index.ts
@@ -7,6 +7,14 @@ import {
   GetAllBeerPostComments,
 } from './types';
 
+/**
+ * The select object for retrieving beer post comments.
+ *
+ * @example
+ *   const beerPostComments = await DBClient.instance.beerComment.findMany({
+ *     select: beerPostCommentSelect,
+ *   });
+ */
 const beerPostCommentSelect = {
   id: true,
   content: true,
@@ -18,6 +26,17 @@ const beerPostCommentSelect = {
   },
 } as const;
 
+/**
+ * Creates a new comment for a beer post.
+ *
+ * @param params - The options for creating the comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the beer.
+ * @param params.beerPostId - The ID of the beer post.
+ * @param params.userId - The ID of the user creating the comment.
+ * @returns A promise that resolves to the created beer comment.
+ */
 export const createBeerPostCommentService: CreateBeerPostComment = ({
   body,
   beerPostId,
@@ -35,6 +54,16 @@ export const createBeerPostCommentService: CreateBeerPostComment = ({
   });
 };
 
+/**
+ * Edits a comment for a beer post.
+ *
+ * @param params - The options for editing the comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the beer.
+ * @param params.beerPostCommentId - The ID of the beer post comment.
+ * @returns A promise that resolves to the updated beer comment.
+ */
 export const editBeerPostCommentByIdService: EditBeerPostCommentById = ({
   beerPostCommentId,
   body,
@@ -47,6 +76,13 @@ export const editBeerPostCommentByIdService: EditBeerPostCommentById = ({
   });
 };
 
+/**
+ * Finds a comment for a beer post by ID.
+ *
+ * @param params - The options for finding the comment.
+ * @param params.beerPostCommentId - The ID of the beer post comment.
+ * @returns A promise that resolves to the found beer comment.
+ */
 export const getBeerPostCommentByIdService: FindOrDeleteBeerPostCommentById = ({
   beerPostCommentId,
 }) => {
@@ -56,6 +92,13 @@ export const getBeerPostCommentByIdService: FindOrDeleteBeerPostCommentById = ({
   });
 };
 
+/**
+ * Deletes a comment for a beer post by ID.
+ *
+ * @param params - The options for deleting the comment.
+ * @param params.beerPostCommentId - The ID of the beer post comment.
+ * @returns A promise that resolves to the deleted beer comment.
+ */
 export const deleteBeerCommentByIdService: FindOrDeleteBeerPostCommentById = ({
   beerPostCommentId,
 }) => {
@@ -65,6 +108,15 @@ export const deleteBeerCommentByIdService: FindOrDeleteBeerPostCommentById = ({
   });
 };
 
+/**
+ * Gets all comments for a beer post.
+ *
+ * @param params - The options for getting the comments.
+ * @param params.beerPostId - The ID of the beer post.
+ * @param params.pageNum - The page number of the comments.
+ * @param params.pageSize - The number of comments per page.
+ * @returns A promise that resolves to the found beer comments.
+ */
 export const getAllBeerCommentsService: GetAllBeerPostComments = async ({
   beerPostId,
   pageNum,
diff --git a/src/services/comments/beer-style-comment/index.ts b/src/services/comments/beer-style-comment/index.ts
index 2bf8c10..2e700c3 100644
--- a/src/services/comments/beer-style-comment/index.ts
+++ b/src/services/comments/beer-style-comment/index.ts
@@ -6,6 +6,14 @@ import {
   FindOrDeleteBeerStyleCommentById,
 } from './types';
 
+/**
+ * The select object for retrieving beer style comments.
+ *
+ * @example
+ *   const beerStyleComments = await DBClient.instance.beerStyleComment.findMany({
+ *     select: beerStyleCommentSelect,
+ *   });
+ */
 const beerStyleCommentSelect = {
   id: true,
   content: true,
@@ -17,6 +25,17 @@ const beerStyleCommentSelect = {
   },
 } as const;
 
+/**
+ * Creates a new comment for a beer style.
+ *
+ * @param params - The options for creating the comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the beer style.
+ * @param params.beerStyleId - The ID of the beer style.
+ * @param params.userId - The ID of the user creating the comment.
+ * @returns A promise that resolves to the created beer comment.
+ */
 export const createNewBeerStyleComment: CreateNewBeerStyleComment = ({
   body,
   userId,
@@ -34,6 +53,15 @@ export const createNewBeerStyleComment: CreateNewBeerStyleComment = ({
   });
 };
 
+/**
+ * Gets all comments for a beer style.
+ *
+ * @param params - The options for getting the comments.
+ * @param params.beerStyleId - The ID of the beer style.
+ * @param params.pageNum - The page number of the comments.
+ * @param params.pageSize - The page size of the comments.
+ * @returns A promise that resolves to the beer style comments.
+ */
 export const getAllBeerStyleComments: GetAllBeerStyleComments = async ({
   beerStyleId,
   pageNum,
@@ -54,6 +82,16 @@ export const getAllBeerStyleComments: GetAllBeerStyleComments = async ({
   return { comments, count };
 };
 
+/**
+ * Updates a beer style comment by ID.
+ *
+ * @param params - The options for updating the comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the beer style.
+ * @param params.beerStyleCommentId - The ID of the beer style comment.
+ * @returns A promise that resolves to the updated beer comment.
+ */
 export const updateBeerStyleCommentById: UpdateBeerStyleCommentById = ({
   body,
   beerStyleCommentId,
@@ -67,6 +105,13 @@ export const updateBeerStyleCommentById: UpdateBeerStyleCommentById = ({
   });
 };
 
+/**
+ * Finds a comment for a beer style by ID.
+ *
+ * @param params - The options for finding the comment.
+ * @param params.beerStyleCommentId - The ID of the beer style comment.
+ * @returns A promise that resolves to the found beer comment.
+ */
 export const findBeerStyleCommentById: FindOrDeleteBeerStyleCommentById = ({
   beerStyleCommentId,
 }) => {
@@ -76,6 +121,13 @@ export const findBeerStyleCommentById: FindOrDeleteBeerStyleCommentById = ({
   });
 };
 
+/**
+ * Deletes a comment for a beer style by ID.
+ *
+ * @param params - The options for deleting the comment.
+ * @param params.beerStyleCommentId - The ID of the beer style comment.
+ * @returns A promise that resolves to the deleted beer comment.
+ */
 export const deleteBeerStyleCommentById: FindOrDeleteBeerStyleCommentById = ({
   beerStyleCommentId,
 }) => {
diff --git a/src/services/comments/brewery-comment/index.ts b/src/services/comments/brewery-comment/index.ts
index 0d0283f..19f994c 100644
--- a/src/services/comments/brewery-comment/index.ts
+++ b/src/services/comments/brewery-comment/index.ts
@@ -6,6 +6,14 @@ import {
   UpdateBreweryCommentById,
 } from './types';
 
+/**
+ * The select object for retrieving brewery comments.
+ *
+ * @example
+ *   const breweryComments = await DBClient.instance.breweryComment.findMany({
+ *     select: breweryCommentSelect,
+ *   });
+ */
 const breweryCommentSelect = {
   id: true,
   content: true,
@@ -17,6 +25,16 @@ const breweryCommentSelect = {
   },
 } as const;
 
+/**
+ * Updates a brewery comment by ID.
+ *
+ * @param params - The options for updating the brewery comment.
+ * @param params.breweryCommentId - The ID of the brewery comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the brewery.
+ * @returns A promise that resolves to the updated brewery comment.
+ */
 export const updateBreweryCommentById: UpdateBreweryCommentById = ({
   breweryCommentId,
   body,
@@ -30,6 +48,17 @@ export const updateBreweryCommentById: UpdateBreweryCommentById = ({
   });
 };
 
+/**
+ * Creates a new comment for a brewery.
+ *
+ * @param params - The options for creating the comment.
+ * @param params.body - The body of the comment.
+ * @param params.body.content - The content of the comment.
+ * @param params.body.rating - The rating of the brewery.
+ * @param params.breweryPostId - The ID of the brewery post.
+ * @param params.userId - The ID of the user creating the comment.
+ * @returns A promise that resolves to the created brewery comment.
+ */
 export const createNewBreweryComment: CreateNewBreweryComment = ({
   body,
   breweryPostId,
@@ -47,6 +76,15 @@ export const createNewBreweryComment: CreateNewBreweryComment = ({
   });
 };
 
+/**
+ * Gets all comments for a brewery.
+ *
+ * @param params - The options for getting the comments.
+ * @param params.breweryPostId - The ID of the brewery post.
+ * @param params.pageNum - The page number of the comments.
+ * @param params.pageSize - The number of comments per page.
+ * @returns A promise that resolves to the retrieved brewery comments.
+ */
 export const getAllBreweryComments: GetAllBreweryComments = async ({
   id,
   pageNum,
@@ -67,6 +105,13 @@ export const getAllBreweryComments: GetAllBreweryComments = async ({
   return { comments, count };
 };
 
+/**
+ * Finds a comment for a brewery post by ID.
+ *
+ * @param params - The options for finding the comment.
+ * @param params.breweryCommentId - The ID of the brewery post comment.
+ * @returns A promise that resolves to the found brewery comment.
+ */
 export const getBreweryCommentById: FindDeleteBreweryCommentById = ({
   breweryCommentId,
 }) => {
@@ -76,6 +121,13 @@ export const getBreweryCommentById: FindDeleteBreweryCommentById = ({
   });
 };
 
+/**
+ * Deletes a comment for a brewery post by ID.
+ *
+ * @param params - The options for deleting the comment.
+ * @param params.breweryCommentId - The ID of the brewery post comment.
+ * @returns A promise that resolves to the deleted brewery comment.
+ */
 export const deleteBreweryCommentByIdService: FindDeleteBreweryCommentById = ({
   breweryCommentId,
 }) => {