diff --git a/src/app.ts b/src/app.ts
index 3bf5633..82ee662 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -6,6 +6,7 @@ import cors from 'cors'
 import cookieParser from 'cookie-parser'
 import { getJwtSecret } from './utils/jwt.js'
 import sessionRouter from './routers/session.js'
+import categoryRouter from './routers/category.js'
 
 const authMiddleware: RequestHandler = (req, res, next) => {
     const token = req.cookies.jwt
@@ -57,6 +58,7 @@ export function initServer(): express.Express {
 
     appRouter.use('/session/', sessionRouter)
     appRouter.use('/user/', authMiddleware, userRouter)
+    appRouter.use('/category/', authMiddleware, categoryRouter)
 
     app.use('/v1/', appRouter)
 
diff --git a/src/routers/category.ts b/src/routers/category.ts
new file mode 100644
index 0000000..28fc48b
--- /dev/null
+++ b/src/routers/category.ts
@@ -0,0 +1,53 @@
+import { Category, PrismaClient } from "@prisma/client"
+import express, { RequestHandler } from "express"
+import { z } from "zod"
+import { parseJwtUserId } from "./user.js"
+
+const categoryRouter = express.Router()
+const prisma = new PrismaClient()
+
+const categoryData = z.object({
+    name: z.string().max(50)
+}).required()
+
+const categoryGet: RequestHandler = async (req, res) => {
+    let category: Category | null = null
+
+    try {
+        const categoryGet = categoryData.parse(req.body)
+        category = await prisma.category.findFirst({ where: { name: categoryGet.name } })
+    } catch (error: any) {
+        res.status(400).json({ message: (error.issues ?? error) })
+        return;
+    }
+
+    res.json({ category })
+}
+
+const categoryPost: RequestHandler = async (req, res) => {
+    const userId = parseJwtUserId(req.cookies.jwt)
+    if (userId === undefined) {
+        res.status(400).json({ message: 'Incorrect JWT payload.' })
+        return;
+    }
+
+    try {
+        const newCategory = categoryData.parse(req.body)
+        prisma.category.create({
+            data: {
+                name: newCategory.name,
+                user_id: userId
+            }
+        })
+    } catch (error: any) {
+        res.status(400).json({ message: (error.issues ?? error) })
+        return;
+    }
+
+    res.json({ message: 'Category successfully added.' })
+}
+
+categoryRouter.get('/', categoryGet)
+categoryRouter.post('/', categoryPost)
+
+export default categoryRouter
diff --git a/src/routers/language.ts b/src/routers/language.ts
deleted file mode 100644
index 26cb7fc..0000000
--- a/src/routers/language.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { Language, PrismaClient } from ".prisma/client"
-import express, { RequestHandler } from "express"
-import { z } from "zod"
-
-const langRouter = express.Router()
-const prisma = new PrismaClient()
-
-const newLang = z.object({
-    name: z.string()
-})
-
-const langRouterGet: RequestHandler = (res, req, next) => {
-
-}
-
-const langRouterPost: RequestHandler = (res, req, next) => {
-
-}
-
-langRouter.get('/', langRouterGet)
-langRouter.post('/', langRouterPost)
-
-export default langRouter
\ No newline at end of file
diff --git a/src/routers/user.ts b/src/routers/user.ts
index b80fb5c..980267c 100644
--- a/src/routers/user.ts
+++ b/src/routers/user.ts
@@ -11,7 +11,7 @@ const editableUserData = z.object({
     picture_path: z.string().optional()
 })
 
-function parseJwtUserId(jwtoken: string): number | undefined {
+export function parseJwtUserId(jwtoken: string): number | undefined {
     const payload = jwt.decode(jwtoken)
     if (payload == undefined) {
         return undefined