Customize your Slack experience with apps using a wide range of APIs.
Block Kit lets you build interfaces without a UI designer. It's available for use in surfaces across all devices without any extra code.
Version 3.6.0
of the developer tools for the Slack platform is joining the summer fun!
runtime_not_found
error code that will appear when a hook script cannot be found because the runtime for a project wasn't found during execution.slack install
command to create and install new Bolt Framework apps that are configured to use app settings as the source of truth (i.e., remote manifest).slack doctor
command according to an alphabetized list of team domains.
Version 3.5.2
of the developer tools for the Slack platform has landed!
deno
as part of the installation. We recommend installing deno
separately and configuring CI systems as needed for app development (such as for ROSI apps).sdk_hook_not_found
error now provides a link to the Deno starter template hooks.json
file as a working example.We'd like to update our previous announcement regarding classic app deprecation. We're pushing the deprecation date for classic apps to November 16, 2026.
The Slack Web API featured workflows methods are now available! Use the workflows.featured.add
, workflows.featured.list
, workflows.featured.remove
, and workflows.featured.set
methods to manage featured workflows programatically.
Version 3.5.1
of the developer tools for the Slack Platform has arrived! The install scripts now prompt you for feedback if an error occurs during the installation process.
We're making some changes to the entry requirements for apps submitting to the Slack Marketplace. Currently, we require that apps submitting to the Slack Marketplace have at least 10 installations on active workspaces. The goal behind this requirement is to ensure that all apps are thoroughly tested on a workspace other than the one they were built on. However, starting August 11th we will be reducing this requirement from 10 to 5 active workspaces! As part of this change, after this date we will automatically block submissions that don't meet this requirement. Please note: this requirement will not apply to apps that are already approved for the Slack Marketplace or submissions from apps that are not yet approved but are in the review process.