Get a fast start with samples and tutorials for common use cases.
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.
We're making clarifications to the API Terms of Service that will take effect immediately for new apps and on June 30, 2025 for existing apps. Please read the terms in full, but below is a summary of what’s changing:
We're updating the rate limits for the conversations.history
and conversations.replies
Web API methods methods for non-Marketplace apps. This rate limit reduction will immediately affect new applications and new installations of non-Marketplace applications. The new rate limits will be applied to existing installations of unlisted, distributed applications published outside the Marketplace on September 2, 2025. The new rate limits will be updated to allow 1 request per minute and will return a maximum of 15 objects per request. Read more here.
Version 3.2.0
of the developer tools for the Slack platform is here!
project (local)
and app settings (remote)
. You'll see these changes in the slack create
, slack init
, and slack app link <id>
commands, for example.slack app settings
command. Bolt developers with a remote manifest source managed within app settings may find this useful for discovering new features or making updates.slack app link
and slack app list
commands shown when running the slack app --help
command now use the entire command in order to prevent potential aliasing errors.Version 3.1.0
of the developer tools for the Slack platform has sprouted!
slack app link
command to work with apps that have a local
manifest source.slack feedback
command to display a prompt for Slack CLI feedback; now you can ask questions, submit issues, or suggest features for the Slack CLI through GitHub Issues.slack feedback --name platform-improvements
command has been replaced with slack feedback --name slack-platform
. You can continue to use the --name platform-improvements
flag until the next major version release.slack feedback
command error message to account for a missing --name <id>
flag and to clarify that the name is specified as a flag. You should now see: Please provide a --name flag or remove the --no-prompt flag
.Version 3.0.5
of the developer tools for the Slack platform has bloomed!
slack upgrade
command inside a project directory, the output now notes whether the latest SDK versions were checked.We want to update you about our previous announcement regarding support for classic apps. After much consideration and feedback, we have decided to push back the deprecation date to May 25, 2026.