diff --git a/client/common-client-plugin.ts b/client/common-client-plugin.ts
index 6babffee..522ee580 100644
--- a/client/common-client-plugin.ts
+++ b/client/common-client-plugin.ts
@@ -1,6 +1,4 @@
 
-'use strict'
-
 function register ({ registerHook }: RegisterOptions): void {
   registerHook({
     target: 'action:router.navigation-end',
diff --git a/client/tsconfig.json b/client/tsconfig.json
index 89e45dbc..21014bdc 100644
--- a/client/tsconfig.json
+++ b/client/tsconfig.json
@@ -13,8 +13,13 @@
 		"strictBindCallApply": true, // should already be true because of strict:true
 		"noUnusedLocals": true,
     "outDir": "../dist/client",
-		"paths": {}
+		"paths": {
+			"shared/*": ["../shared/*"]
+		}
 	},
-	"include": ["./**/*"],
+	"include": [
+		"./**/*",
+		"../shared/**/*"
+	],
 	"exclude": []
 }
diff --git a/client/videowatch-client-plugin.ts b/client/videowatch-client-plugin.ts
index caa51d20..9160c63f 100644
--- a/client/videowatch-client-plugin.ts
+++ b/client/videowatch-client-plugin.ts
@@ -1,4 +1,4 @@
-'use strict'
+import { parseConfigUUIDs } from 'shared/lib/config'
 
 interface VideoCache {[key: string]: Video}
 
@@ -14,19 +14,6 @@ function register ({ registerHook, peertubeHelpers }: RegisterOptions): void {
   let lastUUID: string | null = null
   let settings: any = {}
 
-  function parseUUIDs (s: string): string[] {
-    if (!s) {
-      return []
-    }
-    let a = s.split('\n')
-    a = a.map(line => {
-      return line.replace(/#.*$/, '')
-        .replace(/^\s+/, '')
-        .replace(/\s+$/, '')
-    })
-    return a.filter(line => line !== '')
-  }
-
   function getBaseRoute (): string {
     // FIXME: should be provided by PeertubeHelpers (does not exists for now)
     // We are guessing the route with the correct plugin version with this trick:
@@ -195,12 +182,11 @@ function register ({ registerHook, peertubeHelpers }: RegisterOptions): void {
     container.setAttribute('peertube-plugin-livechat-state', 'initializing')
     videoWrapper.append(container)
 
-    // eslint-disable-next-line @typescript-eslint/no-floating-promises
     peertubeHelpers.getSettings().then((s: any) => {
       settings = s
       const liveOn = !!settings['chat-all-lives']
       const nonLiveOn = !!settings['chat-all-non-lives']
-      const uuids = parseUUIDs(settings['chat-videos-list'])
+      const uuids = parseConfigUUIDs(settings['chat-videos-list'])
       if (!uuids.length && !liveOn && !nonLiveOn) {
         logger.log('Feature not activated.')
         return
@@ -241,6 +227,8 @@ function register ({ registerHook, peertubeHelpers }: RegisterOptions): void {
           container.setAttribute('peertube-plugin-livechat-state', 'closed')
         }
       })
+    }, () => {
+      logger.error('Cant get settings')
     })
   }
 
diff --git a/server/lib/routers/api.ts b/server/lib/routers/api.ts
index 2b7ed81e..820a6db1 100644
--- a/server/lib/routers/api.ts
+++ b/server/lib/routers/api.ts
@@ -1,4 +1,5 @@
 import type { Router, Request, Response, NextFunction } from 'express'
+import { videoHasWebchat } from '../../../shared/lib/video'
 
 // See here for description: https://modules.prosody.im/mod_muc_http_defaults.html
 interface RoomDefaults {
@@ -38,9 +39,23 @@ async function initApiRouter (options: RegisterServerOptions): Promise<Router> {
       if (!video) {
         throw new Error('Video not found')
       }
-      // FIXME: check settings (chat enabled for this video)
+      // check settings (chat enabled for this video?)
+      const settings = await options.settingsManager.getSettings([
+        'chat-only-locals',
+        'chat-all-lives',
+        'chat-all-non-lives',
+        'chat-videos-list'
+      ])
+      if (!videoHasWebchat({
+        'chat-only-locals': settings['chat-only-locals'] as boolean,
+        'chat-all-lives': settings['chat-all-lives'] as boolean,
+        'chat-all-non-lives': settings['chat-all-non-lives'] as boolean,
+        'chat-videos-list': settings['chat-videos-list'] as string
+      }, video)) {
+        throw new Error('Chat is not activated for this video')
+      }
 
-      // TODO: check if room is legit and fill informations
+      // TODO: fill missing informations
       const roomDefaults: RoomDefaults = {
         config: {
           name: video.name,
diff --git a/server/tsconfig.json b/server/tsconfig.json
index 4a3ff98c..5872a594 100644
--- a/server/tsconfig.json
+++ b/server/tsconfig.json
@@ -15,9 +15,12 @@
 		"sourceMap": true,
 
 		"baseUrl": "./",
-		"outDir": "../dist/server",
+		"outDir": "../dist/",
 		"paths": {}
 	},
-	"include": ["./**/*"],
+	"include": [
+		"./**/*",
+		"../shared/**/*"
+	],
 	"exclude": []
 }
diff --git a/shared/.eslintrc.json b/shared/.eslintrc.json
new file mode 100644
index 00000000..d6e49863
--- /dev/null
+++ b/shared/.eslintrc.json
@@ -0,0 +1,41 @@
+{
+  "root": true,
+  "env": {
+      "browser": true,
+      "es6": true
+  },
+  "extends": [
+      "standard-with-typescript"
+  ],
+  "globals": {},
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+      "ecmaVersion": 2018,
+      "project": [
+          "./server/tsconfig.json",
+          "./client/tsconfig.json"
+      ]
+  },
+  "plugins": [
+      "@typescript-eslint"
+  ],
+  "ignorePatterns": [],
+  "rules": {
+      "@typescript-eslint/no-unused-vars": [2, {"argsIgnorePattern": "^_"}],
+      "@typescript-eslint/no-floating-promises": "error",
+      "@typescript-eslint/no-misused-promises": "error",
+      "@typescript-eslint/no-var-requires": "off",
+      "@typescript-eslint/strict-boolean-expressions": "off",
+      "@typescript-eslint/return-await": [2, "in-try-catch"], // FIXME: correct?
+      "@typescript-eslint/no-invalid-void-type": "off",
+      "@typescript-eslint/triple-slash-reference": "off",
+      "max-len": [
+        "error",
+        {
+          "code": 120,
+          "comments": 120
+        }
+      ],
+      "no-unused-vars": "off"
+  }
+}
diff --git a/shared/lib/config.ts b/shared/lib/config.ts
new file mode 100644
index 00000000..0b0cea36
--- /dev/null
+++ b/shared/lib/config.ts
@@ -0,0 +1,16 @@
+function parseConfigUUIDs (s: string): string[] {
+  if (!s) {
+    return []
+  }
+  let a = s.split('\n')
+  a = a.map(line => {
+    return line.replace(/#.*$/, '')
+      .replace(/^\s+/, '')
+      .replace(/\s+$/, '')
+  })
+  return a.filter(line => line !== '')
+}
+
+export {
+  parseConfigUUIDs
+}
diff --git a/shared/lib/video.ts b/shared/lib/video.ts
new file mode 100644
index 00000000..3a29fa99
--- /dev/null
+++ b/shared/lib/video.ts
@@ -0,0 +1,52 @@
+import { parseConfigUUIDs } from './config'
+
+interface SharedSettings {
+  'chat-only-locals': boolean
+  'chat-all-lives': boolean
+  'chat-all-non-lives': boolean
+  'chat-videos-list': string
+}
+
+interface SharedVideoBase {
+  uuid: string
+  isLive: boolean
+}
+
+interface SharedVideoFrontend extends SharedVideoBase {
+  isLocal: boolean
+}
+
+interface SharedVideoBackend extends SharedVideoBase {
+  remote: boolean
+}
+
+type SharedVideo = SharedVideoBackend | SharedVideoFrontend
+
+function videoHasWebchat (settings: SharedSettings, video: SharedVideo): boolean {
+  if (settings['chat-only-locals']) {
+    if ('isLocal' in video) {
+      if (!video.isLocal) return false
+    } else {
+      if (video.remote) return false
+    }
+  }
+
+  if (settings['chat-all-lives']) {
+    if (video.isLive) return true
+  }
+
+  if (settings['chat-all-non-lives']) {
+    if (!video.isLive) return true
+  }
+
+  const uuids = parseConfigUUIDs(settings['chat-videos-list'])
+  if (uuids.includes(video.uuid)) {
+    return true
+  }
+
+  return false
+}
+
+export {
+  videoHasWebchat
+}
diff --git a/webpack.config.js b/webpack.config.js
index eceb5aea..a07c45e7 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -22,6 +22,9 @@ let config = clientFiles.map(f => ({
     ]
   },
   resolve: {
+    alias: {
+      'shared': path.resolve(__dirname, 'shared/')
+    },
     extensions: [ '.tsx', '.ts', '.js' ],
   },
   output: {