diff --git a/libs/api/src/trpc.ts b/libs/api/src/trpc.ts
new file mode 100644
index 00000000..690e4e79
--- /dev/null
+++ b/libs/api/src/trpc.ts
@@ -0,0 +1,49 @@
+import { TRPCError, initTRPC } from '@trpc/server'
+import superjson from 'superjson'
+import { ZodError } from 'zod'
+
+import { auth } from '@cuhacking/auth'
+import { db } from '@cuhacking/db'
+
+export async function createTRPCContext(opts: { headers: Headers }) {
+  const { session, user } = await auth()
+
+  return {
+    db,
+    session,
+    user,
+    ...opts,
+  }
+}
+
+const t = initTRPC.context<typeof createTRPCContext>().create({
+  transformer: superjson,
+  errorFormatter({ shape, error }) {
+    return {
+      ...shape,
+      data: {
+        ...shape.data,
+        zodError:
+          error.cause instanceof ZodError ? error.cause.flatten() : null,
+      },
+    }
+  },
+})
+export const createCallerFactory = t.createCallerFactory
+
+export const createRouter = t.router
+
+export const publicProcedure = t.procedure
+
+export const protectedProcedure = t.procedure.use(({ ctx, next }) => {
+  if (!ctx.session || !ctx.user) {
+    throw new TRPCError({ code: 'UNAUTHORIZED' })
+  }
+
+  return next({
+    ctx: {
+      session: { ...ctx.session },
+      user: { ...ctx.user },
+    },
+  })
+})
diff --git a/libs/auth/src/actions/logout.ts b/libs/auth/src/actions/logout.ts
new file mode 100644
index 00000000..0a173813
--- /dev/null
+++ b/libs/auth/src/actions/logout.ts
@@ -0,0 +1,32 @@
+'use server'
+
+import { cookies } from 'next/headers'
+import { redirect } from 'next/navigation'
+
+import { auth } from '../auth'
+import { lucia } from '../lucia'
+
+/**
+ * This function logs out the user.
+ * @returns The response.
+ */
+export async function logout() {
+  const { session } = await auth()
+  if (!session) {
+    return {
+      error: 'Unauthorized',
+    }
+  }
+
+  await lucia.invalidateSession(session.id)
+
+  const sessionCookie = lucia.createBlankSessionCookie()
+
+  cookies().set(
+    sessionCookie.name,
+    sessionCookie.value,
+    sessionCookie.attributes,
+  )
+
+  return redirect('/login')
+}
diff --git a/libs/auth/src/auth.ts b/libs/auth/src/auth.ts
new file mode 100644
index 00000000..8561ae96
--- /dev/null
+++ b/libs/auth/src/auth.ts
@@ -0,0 +1,40 @@
+import { cache } from 'react'
+import { cookies } from 'next/headers'
+
+import type { Session, User } from 'lucia'
+
+import { lucia } from './lucia'
+
+export async function uncachedAuth(): Promise<
+  { user: User, session: Session } | { user: null, session: null }
+> {
+  const sessionId = cookies().get(lucia.sessionCookieName)?.value ?? null
+  if (!sessionId) {
+    return { user: null, session: null }
+  }
+  const result = await lucia.validateSession(sessionId)
+  try {
+    if (result.session?.fresh) {
+      const sessionCookie = lucia.createSessionCookie(result.session.id)
+      cookies().set(
+        sessionCookie.name,
+        sessionCookie.value,
+        sessionCookie.attributes,
+      )
+    }
+    if (!result.session) {
+      const sessionCookie = lucia.createBlankSessionCookie()
+      cookies().set(
+        sessionCookie.name,
+        sessionCookie.value,
+        sessionCookie.attributes,
+      )
+    }
+  }
+  catch {
+    console.error('Failed to set session cookie')
+  }
+  return result
+}
+
+export const auth = cache(uncachedAuth)
diff --git a/libs/auth/src/index.ts b/libs/auth/src/index.ts
index 6f06caaa..6fe12b00 100644
--- a/libs/auth/src/index.ts
+++ b/libs/auth/src/index.ts
@@ -1 +1,2 @@
-export * from './lib/auth'
+export * from './lucia'
+export * from './auth'
diff --git a/libs/auth/src/lucia.ts b/libs/auth/src/lucia.ts
new file mode 100644
index 00000000..7c289637
--- /dev/null
+++ b/libs/auth/src/lucia.ts
@@ -0,0 +1,33 @@
+import { DrizzlePostgreSQLAdapter } from '@lucia-auth/adapter-drizzle'
+import { Lucia } from 'lucia'
+
+import { db, session, user } from '@cuhacking/db'
+import { envWebsiteServer } from '@cuhacking/env'
+
+const adapter = new DrizzlePostgreSQLAdapter(db, session, user)
+
+export const lucia = new Lucia(adapter, {
+  sessionCookie: {
+    attributes: {
+      secure: envWebsiteServer.NODE_ENV === 'production',
+    },
+  },
+  getUserAttributes: (attributes: any) => {
+    return {
+      name: attributes.name,
+      email: attributes.email,
+      avatarUrl: attributes.avatarUrl,
+    }
+  },
+})
+
+declare module 'lucia' {
+  interface Register {
+    Lucia: typeof lucia
+    DatabaseUserAttributes: {
+      name?: string
+      email: string
+      avatarUrl?: string
+    }
+  }
+}