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block-kit

90 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By slackapi/slack-mcp-plugin (GitHub) · coding · 165 stars · scanned at commit 99e027a

Use when a developer wants to build or validate Block Kit layouts for Slack messages, modals, or Home tabs: message layouts, modals/forms/dialogs, Home tab interfaces, interactive buttons or menus, or modifying existing Block Kit JSON. Also trigger on any Slack UI component (sections, actions, inputs, headers, alerts, tables, carousels), the words "blocks" or "Block Kit Builder", a request to preview rendered blocks, or pasted JSON like "type": "section". Validates via the blocks.validate API m…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'block-kit' ] || [ -L ~/.agents/skills/'block-kit' ]; then echo 'A skill folder named block-kit already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/slackapi/slack-mcp-plugin' "$d" && git -C "$d" checkout --quiet '99e027a47c065223ac719a1b291997d4fc23cec0' -- 'skills/block-kit' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/block-kit' ~/.agents/skills/'block-kit' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'block-kit' ~/.claude/skills/'block-kit' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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