diff --git a/src/app/components/local-plugin.js b/src/app/components/local-plugin.js
index 59c1a5bcf5..d760eb0714 100644
--- a/src/app/components/local-plugin.js
+++ b/src/app/components/local-plugin.js
@@ -35,7 +35,8 @@ module.exports = class LocalPlugin {
       ...this.profile,
       icon: 'data:image/svg+xml;base64,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',
       methods: [],
-      events: []
+      events: [],
+      hash: `local-${this.profile.name}`
     }
     if (!this.profile.name) throw new Error('Plugin should have a name')
     if (!this.profile.url) throw new Error('Plugin should have an URL')
diff --git a/src/app/tabs/compile-tab.js b/src/app/tabs/compile-tab.js
index cf55d583e5..f87d43f61a 100644
--- a/src/app/tabs/compile-tab.js
+++ b/src/app/tabs/compile-tab.js
@@ -65,7 +65,8 @@ class CompileTab extends ApiFactory {
       events: ['compilationFinished'],
       icon: 'data:image/svg+xml;base64,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',
       description: 'compile solidity contracts',
-      kind: 'compile'
+      kind: 'compile',
+      permission: true
     }
   }
 
diff --git a/src/persmission-handler.js b/src/persmission-handler.js
new file mode 100644
index 0000000000..7a6142df03
--- /dev/null
+++ b/src/persmission-handler.js
@@ -0,0 +1,126 @@
+/* global localStorage */
+const yo = require('yo-yo')
+const csjs = require('csjs-inject')
+const modalDialog = require('./app/ui/modaldialog')
+
+const css = csjs`
+.permission p {
+  text-align: center;
+}
+.images {
+  display: flex;
+  justify-content: center;
+  align-item: center;  
+}
+.images img {
+  width: 40px;
+  height: 40px;
+}
+`
+
+export class PermissionHandler {
+
+  constructor () {
+    const permission = localStorage.getItem('plugin-permissions')
+    this.permissions = permission ? JSON.parse(permission) : {}
+  }
+
+  persistPermissions () {
+    const permissions = JSON.stringify(this.permissions)
+    localStorage.setItem('plugin-permissions', permissions)
+  }
+
+  clear () {
+    localStorage.removeItem('plugin-permissions')
+  }
+
+  /**
+   * Show a message to ask the user for a permission
+   * @param {PluginProfile} from The name and hash of the plugin that make the call
+   * @param {ModuleProfile} to The name of the plugin that receive the call
+   * @returns {Promise<{ allow: boolean; remember: boolean }} Answer from the user to the permission
+   */
+  async openPermission (from, to) {
+    return new Promise((resolve, reject) => {
+      modalDialog(
+        `Permission needed for ${to.displayName || to.name}`,
+        this.form(from, to),
+        {
+          label: 'Accept',
+          fn: () => {
+            if (this.permissions[to.name][from.name]) {
+              this.permissions[to.name][from.name].allow = true
+              this.persistPermissions()
+            }
+            resolve(true)
+          }
+        },
+        {
+          label: 'Decline',
+          fn: () => {
+            if (this.permissions[to.name][from.name]) {
+              this.permissions[to.name][from.name].allow = false
+              this.persistPermissions()
+            }
+            resolve(false)
+          }
+        }
+      )
+    })
+  }
+
+  /**
+   * Check if a plugin has the permission to call another plugin and askPermission if needed
+   * @param {PluginProfile} from the profile of the plugin that make the call
+   * @param {ModuleProfile} to The profile of the module that receive the call
+   * @returns {Promise<boolean>}
+   */
+  async askPermission (from, to) {
+    if (!this.permissions[to.name]) this.permissions[to.name] = {}
+    if (!this.permissions[to.name][from.name]) return this.openPermission(from, to)
+
+    const { allow, hash } = this.permissions[to.name][from.name]
+    if (!allow) return false
+    return hash === from.hash
+      ? true  // Allow
+      : this.openPermission(from, to)  // New version of a plugin
+  }
+
+  /**
+   * The permission form
+   * @param {PluginProfile} from The name and hash of the plugin that make the call
+   * @param {ModuleProfile} to The name of the plugin that receive the call
+   */
+  form (from, to) {
+    const fromName = from.displayName || from.name
+    const toName = from.displayName || from.name
+    const remember = this.permissions[to.name][from.name]
+
+    const switchMode = (e) => {
+      e.target.checked
+        ? this.permissions[to.name][from.name] = {}
+        : delete this.permissions[to.name][from.name]
+    }
+    const rememberSwitch = remember
+      ? yo`<input type="checkbox" onchange="${switchMode}" checkbox class="custom-control-input" id="remember">`
+      : yo`<input type="checkbox" class="custom-control-input" id="remember">`
+    const message = remember
+      ? `${fromName} has changed and would like to access the plugin ${toName}.`
+      : `${fromName} would like to access plugin ${toName}.`
+
+    return yo`
+    <section class="${css.permission}">
+      <article class="${css.images}">
+        <img src="${from.icon}" />
+        <span>  ->  </span>
+        <img src="${to.icon}" />
+      </article>
+      <p>${message}</p>
+      <div class="custom-control custom-checkbox">
+        ${rememberSwitch}
+        <label class="custom-control-label" for="remember">Remember this choice</label>
+      </div>
+    </section>
+    `
+  }
+}
diff --git a/src/remixAppManager.js b/src/remixAppManager.js
index e2d60ce83f..65e8647384 100644
--- a/src/remixAppManager.js
+++ b/src/remixAppManager.js
@@ -1,11 +1,13 @@
 import { AppManagerApi, Plugin } from 'remix-plugin'
 import { EventEmitter } from 'events'
 import PluginManagerProxy from './app/components/plugin-manager-proxy'
+import { PermissionHandler } from './persmission-handler'
 
 export class RemixAppManager extends AppManagerApi {
 
   constructor (store) {
     super(null)
+    this.permissionHandler = new PermissionHandler()
     this.store = store
     this.hiddenServices = {}
     this.event = new EventEmitter()