diff --git a/README.md b/README.md
index 23b06d8..a94b7e9 100644
--- a/README.md
+++ b/README.md
@@ -183,4 +183,50 @@ Content-Type: application/json
   "data": {...}
 }
 ```
+
+### GET /v2/lister/{liste}/blimed
+
+Add the list id to current user's `lister` array.
+
+**Status codes:**
+
+Returns `200 Ok` on successfull request.
+
+**Example:**
+
+```http
+GET /v2/lister/300000000000000000000001/blimed HTTP/1.1
+Accept: application/json
+
+HTTP/1.1 Ok
+Content-Type: application/json
+
+{
+  "message": "Ok",
+  "data": {...}
+}
+```
+
+### GET /v2/lister/{liste}/meldav
+
+Remove the list id from current user's `lister` array.
+
+**Status codes:**
+
+Returns `200 Ok` on successfull request.
+
+**Example:**
+
+```http
+GET /v2/lister/300000000000000000000001/meldav HTTP/1.1
+Accept: application/json
+
+HTTP/1.1 Ok
+Content-Type: application/json
+
+{
+  "message": "Ok",
+  "data": {...}
+}
+```
 ## [MIT lisenced](https://github.com/Turistforeningen/Verdandi/blob/master/LICENSE)
diff --git a/index.js b/index.js
index fdd6424..578a6e4 100644
--- a/index.js
+++ b/index.js
@@ -55,6 +55,8 @@ router.get('/', (req, res) => {
     checkin_log: `${req.fullUrl}/steder/{sted}/logg`,
     checkin_stats: `${req.fullUrl}/steder/{sted}/stats`,
     profile_view: `${req.fullUrl}/brukere/{bruker}`,
+    list_join: `${req.fullUrl}/lister/{liste}/blimed`,
+    list_leave: `${req.fullUrl}/lister/{liste}/meldav`,
   });
 });
 
@@ -152,7 +154,25 @@ router.get('/steder/:sted/besok/:checkin', (req, res, next) => {
 
 router.get('/lister/:liste/stats', notImplementedYet);
 router.get('/lister/:liste/logg', notImplementedYet);
-router.post('/lister/:liste/blimed', notImplementedYet);
+router.post('/lister/:liste/blimed', requireAuth, (req, res) => {
+  const user = req.user;
+  user.lister.push(req.params.liste);
+  user.save();
+  res.json({
+    message: 'Ok',
+    data: user,
+  });
+});
+
+router.post('/lister/:liste/meldav', requireAuth, (req, res) => {
+  const user = req.user;
+  user.lister.splice(user.lister.indexOf(req.params.liste), 1);
+  user.save();
+  res.json({
+    message: 'Ok',
+    data: user,
+  });
+});
 
 router.param('bruker', (req, res, next, bruker) => {
   const brukerId = parseInt(bruker, 10);
diff --git a/test/acceptance/lists.js b/test/acceptance/lists.js
new file mode 100644
index 0000000..50609f9
--- /dev/null
+++ b/test/acceptance/lists.js
@@ -0,0 +1,63 @@
+/* eslint import/no-extraneous-dependencies: ["error", {"devDependencies": true}] */
+'use strict';
+
+const assert = require('assert');
+const request = require('supertest');
+const app = request(require('../../index'));
+const auth = require('../../lib/auth');
+
+const users = require('../fixtures/dnt-users');
+
+const getUserData = auth.getUserData;
+
+describe('POST /lister/:liste/*', () => {
+  before(() => {
+    auth.getUserData = () => Promise.resolve(users[1]);
+  });
+
+  after(() => {
+    auth.getUserData = getUserData;
+  });
+
+  const listId = '57974036b565590001a98884';
+  // Append `/blimed` or `/meldav` to join or leave a list
+  const url = `/api/dev/lister/${listId}`;
+
+
+  describe('POST /lister/:liste/blimed', () => {
+    it('returns error for missing user auth', () => (
+      app.post(`${url}/blimed`)
+        .expect(401)
+        .expect({
+          code: 401,
+          message: 'X-User-Id header is required',
+        })
+    ));
+
+    it('adds the list id to the users lists array', done => {
+      app.post(`${url}/blimed`)
+        .set('X-User-Id', '1234')
+        .set('X-User-Token', 'abc123')
+        .expect(200)
+        .end((req, res) => {
+          assert.equal(res.body.message, 'Ok');
+          assert.notEqual(res.body.data.lister.indexOf(listId), -1);
+          done();
+        });
+    });
+  });
+
+  describe('POST /lister/:liste/meldav', () => {
+    it('removes the list from the users lists array', done => {
+      app.post(`${url}/meldav`)
+        .set('X-User-Id', '1234')
+        .set('X-User-Token', 'abc123')
+        .expect(200)
+        .end((req, res) => {
+          assert.equal(res.body.message, 'Ok');
+          assert.equal(res.body.data.lister.indexOf(listId), -1);
+          done();
+        });
+    });
+  });
+});