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Slack

COMMSCOLLAB
Velocity6.3

Business communication and collaboration platform

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Slack is turning its app platform into an AI-agent surface — MCP on both ends, richer Block Kit.

developer-platformmcpblock-kitai-assistantsstreaming-apisdk-releases
◆Current state
The developer-facing changelog is busy and coherent: a Slackbot MCP client and expanded Slack MCP server tools, new Block Kit blocks (data visualization, data table, alert/card/carousel), streaming API updates for AI assistants, and a steady drumbeat of CLI and SDK releases.
◆Where it's heading
Slack is positioning itself as both an MCP host (Slackbot calling external tools) and an MCP server (external agents acting in Slack), while Block Kit gains data-rich primitives and the streaming API matures for assistant experiences. The direction is making Slack a first-class surface for AI agents and data apps.
◆Prediction
Expect deeper MCP capabilities and more data/visualization blocks, with continued frequent CLI/SDK releases supporting the agent-and-app platform push.

◆Recent moves

  1. 9d ago

    Announcing the Slackbot MCP Client

    ⚡ SPARK

    The Slackbot MCP Client lets Slackbot call external MCP tools — extending Slack's built-in assistant into an agent that can reach user-chosen tools, a notable step in its AI-platform direction.

    View source ↗
  2. 9d ago

    Release: Slack CLI v4.3.0

    Slack CLI v4.3.0 ships, continuing the platform's frequent developer-tooling cadence — incremental tooling for app builders.

    View source ↗
  3. 10d ago

    System notifications now delivered by "Slack" instead of Slackbot

    System notifications (membership changes, Slack Connect alerts, retention notices) now come from the 'Slack' system user instead of Slackbot — a small but user-visible delivery change that disentangles system messages from the assistant.

    View source ↗
  4. 10d ago

    New Block Kit data visualization block

    A new Block Kit data visualization block lands, extending the UI framework toward data-rich app surfaces — consistent with the data-table and card blocks shipped alongside it.

    View source ↗
  5. 24d ago

    Release: Java Slack SDK v1.49.0

    The Java Slack SDK v1.49.0 adds authorship arguments to assistant thread-status and chat streaming methods — SDK support for the maturing AI-assistant and streaming APIs.

    View source ↗
  6. 24d ago

    Release: Slack CLI v4.2.0

    Slack CLI v4.2.0 — a routine prior CLI release with no detailed changes surfaced in the feed.

    View source ↗