diff --git a/src/api.ts b/src/api.ts
index 2f2e8e5..bd1fba7 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -59,46 +59,49 @@ router.get('/pool', (req, res) => {
 });
 
 router.post('/pool', (req, res) => {
-	// if (req.body.poolID in pools) {
-	// 	res.json({ status: 'error', error: 'already_exists' });
-	// } else {
-	// 	pools[req.body.poolID] = {
-	// 		id: req.body.poolID,
-	// 		title: req.body.title,
-	// 		description: req.body.description,
-	// 		participant_ids: [],
-	// 		driver_id: 'no driver',
-	// 		create_time: 'create time',
-	// 		update_time: 'update time',
-	// 		comments: [],
-	// 		group_id: 'no group',
-	// 		status: 'pending',
-	// 		capacity: 0,
-	// 		direction: 'pickup',
-	// 		author_id: 'no author',
-	// 		type: 'request',
-	// 	};
-	// 	res.json({ status: 'success' });
-	// }
-});
+	if (req.session.accountID == null) {
+		res.status(401);
+		return res.json({ status: 'error', error: 'need_login' });
+	}
 
-router.patch('/pool', (req, res) => {
-	// if (!(req.body.poolID in pools)) {
-	// 	res.json({ status: 'error', error: 'not_found' });
-	// } else {
-	// 	let pool = pools[req.body.poolID];
-	// 	pool.title = req.body.title;
-	// 	pool.description = req.body.description;
-	// 	pool.driver_id = req.body.driver_id;
-	// 	pool.update_time = req.body.update_time;
-	// 	pool.status = req.body.status;
-	// 	pool.capacity = req.body.capacity;
-	// 	pool.direction = req.body.direction;
-	// 	res.json({ status: 'success' });
-	// }
-});
+	const userID = req.session.accountID;
+	const {
+		capacity,
+		description,
+		direction,
+		end_time,
+		group_id,
+		start_time,
+		title,
+		type,
+	} = req.body;
 
-router.delete('/pool', (req, res) => {});
+	const pool = new PoolModel();
+	Object.assign(pool, {
+		author_id: userID,
+		capacity,
+		description,
+		direction,
+		status: 'pending',
+		title,
+		type,
+		participant_ids: [],
+		comments: [],
+		create_time: new Date().toISOString(),
+		update_time: new Date().toISOString(),
+		group_id,
+	});
+
+	pool
+		.save()
+		.then((pool) => {
+			res.json({ status: 'success', id: pool._id });
+		})
+		.catch((err) => {
+			console.error('Error when creating a pool:', err);
+			res.json({ status: 'error' });
+		});
+});
 
 router.get('/group', async (req, res) => {
 	if (typeof req.query.groupID != 'string') {
diff --git a/src/models.ts b/src/models.ts
index 39e9ec7..f1157da 100644
--- a/src/models.ts
+++ b/src/models.ts
@@ -49,7 +49,7 @@ export interface Pool extends Document {
 	title: string;
 	description: string;
 	participant_ids: string[];
-	driver_id: string;
+	driver_id?: string;
 	create_time: string;
 	update_time: string;
 	comments: Comment[];
@@ -65,7 +65,7 @@ const PoolSchema: Schema = new Schema({
 	title: { type: String, required: true },
 	description: { type: String, required: true },
 	participant_ids: { type: [String], required: true },
-	driver_id: { type: String, required: true },
+	driver_id: { type: String, required: false },
 	create_time: { type: String, required: true },
 	update_time: { type: String, required: true },
 	comments: { type: [CommentSchema], required: true },