Customize your workspace
Save time and automate repetitive tasks
Turn slow, repetitive, manual processes, like onboarding or gathering feedback, into rapid and automated apps and workflows.
Use Bolt or Workflow Builder to quickly transform the way you work.
Nine Publishing used custom tools and apps to simplify newsroom processes and monitor performance analytics.
Your work just works, on any device
Block Kit lets you build UIs without a UI designer. It’s available for use in app surfaces across all devices without any extra code.
Build and prototype UIs in seconds using our Block Kit Builder tool.
TD Ameritrade built a Slack app called BetterBot to source fast, automated answers to common questions.
Minimize multitasking
Reduce the number of apps and websites needed to get work done.
Bring data and tasks from external services and internal tools to where everyone is already collaborating: Slack.
Hearst used their HANS Bot to quickly surface data to decide which stories will perform best. HANS saved the team hours per day on searching for custom reports.
Built for builders
No code workflows
To automate easily, no code required, try Workflow Builder.
Solid foundations
To tinker with advanced customizations, start quickly by using our Bolt framework.Explore what's possible
Use testers on our API method references to browse and try the range of app capabilities.Tools for every purpose
No matter how you choose to build, use our official and community tools to make the process simpler.Distribute apps to grow your business
Spark discovery
Put your app in front of millions of Slack users. Expand your reach by distributing your app in the App Directory.Stay top-of-mind
Meet users where they’re most engaged throughout the day — in Slack — with interactive app experiences.Broaden engagement
Share your app's workflow steps with users, empowering them to integrate your services into everyday processes.Zapier upgraded their App Directory app to allow users to create complex automations - with no code - using Slack Workflow Builder and Zapier’s 3,000+ partner apps. Zapier also added an App Home to allow users to build automated workflows directly in Slack.
Tutorials to spark inspiration
Browse our library of tutorials that start from a range of common app scenarios.Updates from us
Developer changelog
If you still use rtm.connect or rtm.start to connect to Slack, you'll notice that all WebSocket URLs now begin with wss://wss-primary.slack.com.
As previously announced, apps & integrations created after today, November 30, 2021, must use rtm.connect instead of the deprecated rtm.start when connecting to the RTM API. Learn more about this and what's next for existing users of rtm.start.
Block elements can now utilize the focus_on_load field within Block kit messages, which allows you to pick one specific Block element to auto focus on. Learn more.
The default Slack Connect invitation type when using conversations.inviteShared has changed. Invites are now sent to limit the recipient's actions to only sending messages. The new external_limited argument can be used to control which invitation type is sent.
We're starting to roll out a new, opt-in beta UI that lets you configure and reconfigure apps using manifests. We're also launching new App Manifest APIs to let you create and manage all your apps programmatically. Learn more.
One of our earliest API methods is taking a well-deserved retirement on September 30, 2022. For existing apps, rtm.start will instead return an equivalent response to rtm.connect. Beginning November 30, 2021, newly created apps and integrations will only be able to use rtm.connect. Learn more.