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0.3.38 • Public • Published

Plugin Core

This is the core library used to create a new external plugin.

Name Latest Version
@remixproject/plugin badge

Use this library if you want to create a plugin for a new environment.

If you want to create a plugin in an existing envrionment, use the specific library. For example :


API Description
PluginClient Entry point to communicate with other plugins

Getting Started

This getting started is for building iframe based plugin (only supported by remix-ide for now).

Installation :

npm install @remixproject/plugin-iframe

or with a unpkg :

<script src="https://unpkg.com/@remixproject/plugin"></script>

Plugin Client

The plugin client is how you connect your plugin to remix.

To import ( the ES6 way) with NPM use:

import { createClient } from '@remixproject/plugin'
const client = createClient()

Or if you are using unpkg use:

const { createClient } = remixPlugin
const client = createClient()

Test inside Remix IDE

To test your plugin with remix:

  1. Go to http://remix-alpha.ethereum.org. (if your localhost is over HTTP, you need to use http for Remix IDE).
  2. Click on the plugin manager (Plug icon on the left).
  3. Click on "Connect to a Local Plugin".
  4. Fill the profile info of you plugin ().
  5. Click on "ok".
  6. A new icon should appear on the left, this is where you can find you plugin.

Testing your plugin

You can test your plugin direcly on the alpha version of Remix-IDE. Go to the pluginManager (plug icon in the sidebar), and click "Connect to a Local Plugin".

Here you can add :

  • A name : this is the name used by other plugin to listen to your events.
  • A displayName : Used by the IDE.
  • The url : May be a localhost for testing.

Note: No need to do anything if you localhost auto-reload, a new handshake will be send by the IDE.


Every plugin has a status object that can display notifications on the IDE. You can listen on a change of status from any plugin using statusChanged event :

client.on('fileManager', 'statusChanged', (status: Status) => {
  // Do Something 

The status object is used for displaying a notification. It looks like that :

interface Status {
  key: number | 'edited' | 'succeed' | 'loading' | 'failed' | 'none'  // Display an icon or number
  type?: 'success' | 'info' | 'warning' | 'error'  // Bootstrap css color
  title?: string  // Describe the status on mouseover
  • If you want to remove a status use the 'none' value for key.
  • If you don't define type, it would be the default value ('info' for Remix IDE).

You can also change the status of your own plugin by emitting the same event :

client.emit('statusChanged', { key: 'succeed', type: 'success', title: 'Documentation ready !' })

The IDE can use this status to display a notification to the user.

Client Options

CSS Theme

Remix is using Bootstrap. For better User Experience it's highly recommanded to use the same theme as Remix in your plugin. For that you just have to use standard bootstrap classes.

Remix will automatically create a <link/> tag in the header of your plugin with the current theme used. And it'll update the link each time the user change the theme.

If you really want to use your own theme, you can use the customTheme flag in the option :

const client = createClient({ customTheme: true })

Custom Api

By default @remixproject/plugin will use remix IDE api. If you want to extends the API you can specify it in the customApi option.

A good use case is when you want to use an external plugin not maintained by Remix team (3box plugin for example):

import { remixProfiles, IRemixApi } from '@remixproject/plugin'
interface ICustomApi extends IRemixApi {
  box: IBox;

export type CustomApi = Readonly<ICustomApi>;

export type RemixClient = PluginClient<any, CustomApi> & PluginApi<CustomApi>;

const customApi: ProfileMap<RemixIDE> = Object.freeze({
  box: boxProfile
const client = createClient({ customApi })

You'll need Typescript > 3.4 to leverage the types.


Plugins communicate with the IDE through the postMessage API. It means that PluginClient needs to know the origin of your IDE.

If you're developing a plugin with your IDE running on localhost you'll need to specify the port on which your IDE runs. By default the port used is 8080. To change it you can do:

const devMode = { port: 3000 }
const client = createClient({ devMode })




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npm i @remixproject/plugin

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