·slack-block-kit

Build Slack Block Kit UIs for messages, modals, and Home tabs. Use when creating Slack notifications, interactive forms, bot responses, app dashboards, or any Slack UI. Covers blocks (Section, Actions, Input, Header), elements (Buttons, Selects, Date pickers), composition objects, and the slack-block-builder library.

22Installs·0Trend·@linehaul-ai

Installation

$npx skills add https://github.com/linehaul-ai/linehaulai-claude-marketplace --skill slack-block-kit

How to Install slack-block-kit

Quickly install slack-block-kit AI skill to your development environment via command line

  1. Open Terminal: Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.)
  2. Run Installation Command: Copy and run this command: npx skills add https://github.com/linehaul-ai/linehaulai-claude-marketplace --skill slack-block-kit
  3. Verify Installation: Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw

Source: linehaul-ai/linehaulai-claude-marketplace.

SKILL.md

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Block Kit is Slack's UI framework for creating rich, interactive messages, modals, and Home tabs. It uses a JSON-based structure with three main components:

| Messages | 50 | Notifications, bot responses, channel posts | | Modals | 100 | Forms, confirmations, multi-step workflows | | Home tabs | 100 | App dashboards, user-specific content |

| invalidblocks | Malformed JSON | Validate in Block Kit Builder | | toomanyblocks | Exceeds limit | Reduce to 50 (msg) or 100 (modal) | | invalidelement | Wrong element in block | Check element compatibility | | missingtext | Required text missing | Add text or fields to Section |

Build Slack Block Kit UIs for messages, modals, and Home tabs. Use when creating Slack notifications, interactive forms, bot responses, app dashboards, or any Slack UI. Covers blocks (Section, Actions, Input, Header), elements (Buttons, Selects, Date pickers), composition objects, and the slack-block-builder library. Source: linehaul-ai/linehaulai-claude-marketplace.

Facts (cite-ready)

Stable fields and commands for AI/search citations.

Install command
npx skills add https://github.com/linehaul-ai/linehaulai-claude-marketplace --skill slack-block-kit
Category
@Collaboration
Verified
First Seen
2026-02-27
Updated
2026-03-10

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Quick answers

What is slack-block-kit?

Build Slack Block Kit UIs for messages, modals, and Home tabs. Use when creating Slack notifications, interactive forms, bot responses, app dashboards, or any Slack UI. Covers blocks (Section, Actions, Input, Header), elements (Buttons, Selects, Date pickers), composition objects, and the slack-block-builder library. Source: linehaul-ai/linehaulai-claude-marketplace.

How do I install slack-block-kit?

Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/linehaul-ai/linehaulai-claude-marketplace --skill slack-block-kit Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw

Where is the source repository?

https://github.com/linehaul-ai/linehaulai-claude-marketplace