diff --git a/common/locales/en/api-v3.json b/common/locales/en/api-v3.json
index 5ab3b3399e..a4fd69f0a3 100644
--- a/common/locales/en/api-v3.json
+++ b/common/locales/en/api-v3.json
@@ -151,5 +151,8 @@
   "countRequired": "\"req.query.count\" is required.",
   "petsReleased": "Pets released.",
   "mountsAndPetsReleased": "Mounts and pets released",
-  "mountsReleased": "Mounts released"
+  "mountsReleased": "Mounts released",
+  "typeNotSellable": "Type is not sellable. Must be one of the following <%= acceptedTypes %>",
+  "userItemsKeyNotFound": "Key not found for user.items <%= type %>",
+  "sold": "You sold a <%= key %> <%= type %>"
 }
diff --git a/common/script/index.js b/common/script/index.js
index 7482a09fd7..c55ac24c9f 100644
--- a/common/script/index.js
+++ b/common/script/index.js
@@ -121,6 +121,7 @@ import openMysteryItem from './ops/openMysteryItem';
 import releasePets from './ops/releasePets';
 import releaseBoth from './ops/releaseBoth';
 import releaseMounts from './ops/releaseMounts';
+import sell from './ops/sell';
 
 api.ops = {
   scoreTask,
@@ -143,6 +144,7 @@ api.ops = {
   releasePets,
   releaseBoth,
   releaseMounts,
+  sell,
 };
 
 import handleTwoHanded from './fns/handleTwoHanded';
diff --git a/common/script/ops/sell.js b/common/script/ops/sell.js
index 33e5f7d673..d5dfa9fbbb 100644
--- a/common/script/ops/sell.js
+++ b/common/script/ops/sell.js
@@ -1,23 +1,42 @@
 import content from '../content/index';
+import i18n from '../../../common/script/i18n';
 import _ from 'lodash';
 import splitWhitespace from '../libs/splitWhitespace';
+import {
+  NotFound,
+  NotAuthorized,
+  BadRequest,
+} from '../libs/errors';
 
-module.exports = function(user, req, cb) {
-  var key, ref, type;
-  ref = req.params, key = ref.key, type = ref.type;
-  if (type !== 'eggs' && type !== 'hatchingPotions' && type !== 'food') {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: ":type not found. Must bes in [eggs, hatchingPotions, food]"
-    }) : void 0;
+const ACCEPTEDTYPES = ['eggs', 'hatchingPotions', 'food'];
+
+module.exports = function sell (user, req = {}) {
+  let key = _.get(req.params, 'key');
+  let type = _.get(req.params, 'type');
+
+  if (!type) {
+    throw new BadRequest(i18n.t('typeRequired', req.language));
   }
+
+  if (!key) {
+    throw new BadRequest(i18n.t('keyRequired', req.language));
+  }
+
+  if (ACCEPTEDTYPES.indexOf(type) === -1) {
+    throw new NotAuthorized(i18n.t('typeNotSellable', {acceptedTypes: ACCEPTEDTYPES.join(', ')}, req.language));
+  }
+
   if (!user.items[type][key]) {
-    return typeof cb === "function" ? cb({
-      code: 404,
-      message: ":key not found for user.items." + type
-    }) : void 0;
+    throw new NotFound(i18n.t('userItemsKeyNotFound', {type}, req.language));
   }
+
   user.items[type][key]--;
   user.stats.gp += content[type][key].value;
-  return typeof cb === "function" ? cb(null, _.pick(user, splitWhitespace('stats items'))) : void 0;
+
+  let response = {
+    data: _.pick(user, splitWhitespace('stats items')),
+    message: i18n.t('sold', {type, key}),
+  };
+
+  return response;
 };
diff --git a/tasks/gulp-eslint.js b/tasks/gulp-eslint.js
index e71cde8258..6ed2b567a9 100644
--- a/tasks/gulp-eslint.js
+++ b/tasks/gulp-eslint.js
@@ -30,7 +30,6 @@ const COMMON_FILES = [
   '!./common/script/ops/reroll.js',
   '!./common/script/ops/reset.js',
   '!./common/script/ops/revive.js',
-  '!./common/script/ops/sell.js',
   '!./common/script/ops/sortTag.js',
   '!./common/script/ops/sortTask.js',
   '!./common/script/ops/unlock.js',
diff --git a/test/api/v3/integration/user/POST-user_sell.test.js b/test/api/v3/integration/user/POST-user_sell.test.js
new file mode 100644
index 0000000000..be8d55c932
--- /dev/null
+++ b/test/api/v3/integration/user/POST-user_sell.test.js
@@ -0,0 +1,42 @@
+import {
+  generateUser,
+  translate as t,
+} from '../../../../helpers/api-integration/v3';
+import content from '../../../../../common/script/content';
+
+describe('POST /user/sell/:type/:key', () => {
+  let user;
+  let type = 'eggs';
+  let key = 'Wolf';
+
+  beforeEach(async () => {
+    user = await generateUser();
+  });
+
+  // More tests in common code unit tests
+
+  it('returns an error when user does not have item', async () => {
+    await expect(user.post(`/user/sell/${type}/${key}`))
+      .to.eventually.be.rejected.and.eql({
+        code: 404,
+        error: 'NotFound',
+        message: t('userItemsKeyNotFound', {type}),
+      });
+  });
+
+  it('sells an item', async () => {
+    await user.update({
+      items: {
+        eggs: {
+          Wolf: 1,
+        },
+      },
+    });
+
+    let response = await user.post(`/user/sell/${type}/${key}`);
+    await user.sync();
+
+    expect(response.message).to.equal(t('sold', {type, key}));
+    expect(user.stats.gp).to.equal(content[type][key].value);
+  });
+});
diff --git a/test/common/ops/sell.js b/test/common/ops/sell.js
new file mode 100644
index 0000000000..c5499b00d2
--- /dev/null
+++ b/test/common/ops/sell.js
@@ -0,0 +1,81 @@
+import sell from '../../../common/script/ops/sell';
+import i18n from '../../../common/script/i18n';
+import {
+  generateUser,
+} from '../../helpers/common.helper';
+import {
+  NotAuthorized,
+  BadRequest,
+  NotFound,
+} from '../../../common/script/libs/errors';
+import content from '../../../common/script/content/index';
+
+describe('shared.ops.sell', () => {
+  let user;
+  let type = 'eggs';
+  let key = 'Wolf';
+  let acceptedTypes = ['eggs', 'hatchingPotions', 'food'];
+
+  beforeEach(() => {
+    user = generateUser();
+    user.items[type][key] = 1;
+  });
+
+  it('returns an error when type is not provided', (done) => {
+    try {
+      sell(user);
+    } catch (err) {
+      expect(err).to.be.an.instanceof(BadRequest);
+      expect(err.message).to.equal(i18n.t('typeRequired'));
+      done();
+    }
+  });
+
+  it('returns an error when key is not provided', (done) => {
+    try {
+      sell(user, {params: { type } });
+    } catch (err) {
+      expect(err).to.be.an.instanceof(BadRequest);
+      expect(err.message).to.equal(i18n.t('keyRequired'));
+      done();
+    }
+  });
+
+  it('returns an error when non-sellable type is provided', (done) => {
+    let nonSellableType = 'nonSellableType';
+
+    try {
+      sell(user, {params: { type: nonSellableType, key } });
+    } catch (err) {
+      expect(err).to.be.an.instanceof(NotAuthorized);
+      expect(err.message).to.equal(i18n.t('typeNotSellable', {acceptedTypes: acceptedTypes.join(', ')}));
+      done();
+    }
+  });
+
+  it('returns an error when key is not found with type provided', (done) => {
+    let fakeKey = 'fakeKey';
+
+    try {
+      sell(user, {params: { type, key: fakeKey } });
+    } catch (err) {
+      expect(err).to.be.an.instanceof(NotFound);
+      expect(err.message).to.equal(i18n.t('userItemsKeyNotFound', {type}));
+      done();
+    }
+  });
+
+  it('reduces item count from user', () => {
+    let response = sell(user, {params: { type, key } });
+
+    expect(response.message).to.equal(i18n.t('sold', {type, key}));
+    expect(user.items[type][key]).to.equal(0);
+  });
+
+  it('increases user\'s gold', () => {
+    let response = sell(user, {params: { type, key } });
+
+    expect(response.message).to.equal(i18n.t('sold', {type, key}));
+    expect(user.stats.gp).to.equal(content[type][key].value);
+  });
+});
diff --git a/website/src/controllers/api-v3/user.js b/website/src/controllers/api-v3/user.js
index 0267e9511b..c60b2a3eef 100644
--- a/website/src/controllers/api-v3/user.js
+++ b/website/src/controllers/api-v3/user.js
@@ -828,4 +828,24 @@ api.userReleaseMounts = {
   },
 };
 
+/*
+* @api {post} /user/sell/:type/:key Sells user's items.
+* @apiVersion 3.0.0
+* @apiName UserSell
+* @apiGroup User
+*
+* @apiSuccess {Object} data `stats items`
+*/
+api.userSell = {
+  method: 'POST',
+  middlewares: [authWithHeaders(), cron],
+  url: '/user/sell/:type/:key',
+  async handler (req, res) {
+    let user = res.locals.user;
+    let sellResponse = common.ops.sell(user, req);
+    await user.save();
+    res.respond(200, sellResponse);
+  },
+};
+
 module.exports = api;