Block Kit

Name: Block Kit
Author: Slack

Unversioned·Public·Certified·integration·scanned 2026-08-21

Install

Claude Code: add the marketplace once, then install.

/plugin marketplace add simplycubed/skills

/plugin install block-kit@simplycubed

Any agent (folder)

Download the folder at the source, then drop it into your agent's skills directory.

Folder: block-kit/

Agent	Directory
Vendor-neutral (Codex, Gemini CLI, …)	.agents/skills/
Claude Code	~/.claude/skills/
Gemini CLI	~/.gemini/skills/

Summary

Build and validate Slack Block Kit layouts for messages, modals, and Home tabs, including sections, actions, inputs, tables, and interactive components.

Details

Passed automated static scanning. A point-in-time review, not a guarantee it is safe to run.

Scanned 2026-08-21: certify builtin · gitleaks 8.30.1 · osv-scanner 2.5.1 · semgrep n/a (no code)

✓ All checks clean

Credits

Written by Slack

Keywords

#slack #block-kit #ui #messaging

Need a skill that doesn't exist yet?

Everything above is third-party skills we certify. We also build skills to order, for the work no public catalog covers. Describe what you need and we'll come back with an estimate and any questions.