Build apps with Slack’s developer tools

Building with Slack’s platform allows you to connect your workspace with the tools, data sources and processes that make your organisation run smoothly.


What can you build?

Apps can either be internal, meaning you design and build them just for your company to use, or external, meaning you build and distribute something that other companies can use in their workspaces. Read on for a few example use cases, an overview of the features and tools, and to find out where to get started.


Example use cases

The best apps for your workspace will depend on the tools and processes that matter to your team. To get inspired, you might ask yourself the following questions:

  • Do any tools generate alerts or notifications that require the attention of a group of people? You can automatically send alerts to a Slack channel to notify the right people all at once.
  • Do you switch between programs all day long to find the information that you’re looking for? You can build a custom app that pulls data into your workspace to tie related data together and initiate complex cross-system workflows – with the added benefit of using Slack’s built-in search. 

Learn how to plan out your app using the Slack API guide.


Features and developer tools

You can customise the way that end users interact with your app using our suite of building blocks. Below, you’ll find examples of the features that you can build into your app and the tools that we provide to make it as simple as possible to develop and manage your app.



  • Functions
    Functions are preset blocks of code that take certain actions. People can add functions that you build to the workflows they create with Workflow Builder.*
  • Workflows
    Workflows are comprised of functions executed in a specific order. Apps can include pre-built workflows for anyone in your workspace to use.
  • Triggers
    Triggers determine how (for example, with the click of a button or automatically based on a schedule) and where (in Slack or in another service) a workflow starts.

*Members of your workspace or Enterprise Grid organisation will only be able to add functions to workflows using the new version of Workflow Builder that will be released later this year.

  • Slack CLI
    Use the Slack CLI (command line interface) to build the framework for a new app with a TypeScript SDK, then easily deploy your app to Slack’s infrastructure.
  • App manifests
    Use an app manifest to quickly set up, develop and manage your app.
  • App deployment and data storage
    Deploy your app and store its data on Slack’s infrastructure to keep all of the components in one place and automatically comply with our security and compliance standards.


Get started

Slack API is home to everything that you need to know about building on the Slack platform, from introductory guides to detailed documentation. When you’re ready to build, follow the steps in the Slack API quick-start guide.