Slack — Collaboration, Productivity product updates and releases, tracked on megachangelog.
Slack launched a new MCP (Model Context Protocol) and Skills Plugin for AI development tools, bundling skills to help developers build on the Slack platform. Currently available for Claude Code and Cursor.
Slack CLI version 4.6.0 is now available for download, bringing updates and improvements to the command-line interface for Slack development.
Slack CLI version 4.5.0 has been released with updates to the developer tools for the Slack platform.
Bolt for JS version 5.0.0 switches to the native Fetch API, removes the deprecated Workflow Steps from Apps feature, and requires Node.js 20 or higher as the minimum version.
New major versions of the Node Slack SDK packages are now available. This release includes breaking changes and is recommended for all developers using the Node SDK.
Desktop client notifications now prioritize extracting text from message blocks, with fallback to the top-level text field if blocks contain no text. Mobile notifications remain unchanged and continue to use message.text exclusively.
Agent apps can now receive context about what a user is currently viewing when they send a message, including channels, DMs, threads, canvases, and lists. This context is passed automatically by Slack.
Agents now support a new messaging experience that can be configured through your app manifest, enabling richer interaction with Slack applications.
Slack CLI version 4.4.0 has been released with improvements to the command-line interface for developers building Slack apps and integrations.
Added a public, read-only ts property to ChatStream and AsyncChatStream, allowing users to call the chat.update API method as a fallback when the server closes a stream due to undocumented timeouts.
The container block is now available for Block Kit use, enabling developers to better organize and structure interactive message layouts.
Slack is introducing the Slackbot MCP Client, enabling users to extend Slackbot capabilities by integrating custom tools and automations.
Slack CLI version 4.3.0 has been released with improvements and updates for developing and deploying Slack applications.
System notifications including channel membership changes, User Group updates, Slack Connect alerts, and retention policy notices are now sent from the "Slack" system user instead of Slackbot, improving notification consistency.
The data visualization block is now available for Block Kit use, allowing developers to create visual charts and graphs in Slack messages and modals.
Added authorship arguments (iconemoji, iconurl, and username) to the assistant.threads.setStatus and chat.startStream API methods, enabling better control over message attribution in threads and streaming operations.
Slack CLI version 4.2.0 is now available for download.
The data table block is now available for use with Block Kit, enabling developers to display tabular data in their Slack applications.
Slack CLI version 4.1.0 is now available with enhancements to the command-line interface for building and managing Slack applications.
Added iconemoji, iconurl, and username authorship arguments to the assistant.threads.setStatus and chat.startStream API methods, enabling better control over message authorship in these methods.
New tools have been added to the Slack MCP server, expanding integration capabilities for developers and automation workflows.
New blocks are now available in Block Kit, and the Streaming API has been updated with new methods to enhance app development capabilities.
Slack CLI version 4.0.0 introduces major enhancements and improvements to the developer tools for the Slack platform, with v4.0.1 following as a patch release.
Slack now supports Proof Key for Code Exchange (PKCE), an OAuth security extension that allows developers to build more secure applications on public clients like desktop and mobile apps without embedding a vulnerable client_secret.
Version 3.15.0 of the Slack CLI developer tools is now available with platform improvements and updates for developers building on Slack.
Apps can now mark individual OAuth scopes as optional during configuration, giving users more control over data access permissions without blocking installation.
Slack is adding support for additional markdown types when using rich text in Block Kit, enabling more flexible text formatting options in apps.
Version 3.14.0 of Slack CLI is now available, bringing updates to the developer tools for the Slack platform.
The assistant.threads.setStatus API method now accepts either the assistantwrite or chat:write scope, allowing channel-based apps to use AI loading states without requiring exclusive assistantwrite scope permissions.
Slack CLI v3.13.0 is now available with new developer tools for the Slack platform.
Slack has released two major components to enhance LLM and AI agent integration: a Model Context Protocol (MCP) server and a Real-time Search (RTS) API, enabling better workspace data access for artificial intelligence applications.
Slack introduced three new Block Kit components that enable apps and agents to display their thinking steps and actions directly to users.
A new Delayed Events feature allows you to replay events that your app may have missed during outages, ensuring you don't lose important updates.
Version 3.12.0 of the Slack CLI developer tools has been released, providing developers with updated tooling for building on the Slack platform.
Version 3.11.0 of Slack's developer tools for building on the Slack platform is now available.
Slack has paused the previously announced deprecation of classic apps, based on customer and developer feedback.
33 more changes from Slack. Sign up to read the whole changelog.
Sign up freeGitHub or email — no card needed.