Slack

Slack — Developer Platform

Changelogs

Slack CLI v3.13.0 improves developer experience with agentic app templates and better authentication//The Slack CLI now highlights agentic app templates during creation and shows available templates without forcing immediate selection. Updated deployment and authentication flows provide better guidance for developers, including automatic login prompts and improved documentation references.

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Slack launches MCP server and Real-time Search API for AI agent integration//Slack has released two major AI-focused components: the Model Context Protocol (MCP) server designed for LLM consumption, and the Real-time Search API (evolved from Data Access API) for secure, server-side data access. The Real-time Search API now uses granular scopes for fine-grained permission control over channels, direct messages, and multi-party conversations.

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Slack introduces task cards and plan blocks for displaying AI app workflows//Slack has released three new Block Kit components that enable developers to display app and agent actions directly to users. The updates include task card blocks, URL source elements, and plan blocks, alongside new streaming API parameters for controlling how tasks are presented.

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Slack adds delayed events replay feature to recover from outages//Slack has released a new Delayed Events feature that allows developers to replay events their apps may have missed during outages. This helps ensure applications don't lose critical event data when experiencing connectivity issues.

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Slack CLI v3.12.0 adds hot reloading and pyproject.toml support for Python projects//The Slack CLI now includes file watching and live reloading for Bolt for JavaScript and Python projects, automatically restarting the development server when files change. Python projects gain support for pyproject.toml configuration alongside requirements.txt.

releasefeaturesdk