diff --git a/src/api.ts b/src/api.ts
index 880174c..a82b465 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -27,19 +27,17 @@ router.get('/user', (req, res) => {
 	}
 });
 
-// router.post('/user', (req, res) => {
-// 	if (req.body.userID in users) {
-// 		res.json({ status: 'error', error: 'already_exists' });
-// 	} else {
-// 		users[req.body.userID] = {
-// 			id: req.body.userID,
-// 			username: req.body.username,
-// 			first_name: req.body.first_name,
-// 			last_name: req.body.last_name,
-// 		};
-// 		res.json({ status: 'success' });
-// 	}
-// });
+router.patch('/user', (req, res) => {
+	if (!(req.body.userID in users)) {
+		res.json({ status: 'error', error: 'user not found' });
+	} else {
+		let user = users[req.body.userID];
+		user.username = req.body.username;
+		user.first_name = req.body.first_name;
+		user.last_name = req.body.last_name;
+		res.json({ status: 'success' });
+	}
+});
 
 router.delete('/user', (req, res) => {
 	delete users[req.body.userID];
@@ -85,6 +83,22 @@ router.post('/pool', (req, res) => {
 	}
 });
 
+router.patch('/pool', (req, res) => {
+	if (!(req.body.poolID in pools)) {
+		res.json({ status: 'error', error: 'pool 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' });
+	}
+});
+
 router.delete('/pool', (req, res) => {
 	delete pools[req.body.poolID];
 	res.json({ status: 'success' });
@@ -117,6 +131,15 @@ router.post('/group', (req, res) => {
 	}
 });
 
+router.patch('/group', (req, res) => {
+	if (!(req.body.groupID in groups)) {
+		res.json({ status: 'error', error: 'group not found' });
+	} else {
+		let group = users[req.body.groupID];
+		res.json({ status: 'success' });
+	}
+});
+
 router.delete('/group', (req, res) => {
 	delete groups[req.body.groupID];
 	res.json({ status: 'success' });