SkillOfficial
block-kit
MITUpdated on Nov 11, 2026165GitHub stars
A skill from Slack's own MCP and skills plugin that helps an agent produce Block Kit JSON for Slack messages, modals and App Home tabs.
What the skill teaches
A skill from Slack's own MCP and skills plugin that helps an agent produce Block Kit JSON for Slack messages, modals and App Home tabs. The agent picks the target surface, plans the layout, looks up each block and element in the live docs.slack.dev reference instead of relying on memory, writes the JSON and checks it with Slack's blocks.validate API method. It can also edit block JSON the developer already has and point to ways of previewing or sending the result. Bundled reference notes cover design patterns for modals, Home tabs, data display and approval steps.
Capabilities
- Design Block Kit layouts for messages, modals and Home tabs
- Generate Block Kit JSON from the live Slack docs
- Validate blocks with the blocks.validate API method
- Modify existing Block Kit JSON
Install
- Run this to add it to Claude Code:
/plugin marketplace add slackapi/slack-skills-plugin
- Run this to add it to Claude Code:
/plugin install slack@slack
What's inside
- references/agent-progress-design.md
- references/common-patterns.md
- references/data-display-design.md
- references/design-principles.md
- references/home-tab-design.md
- references/human-in-the-loop.md
- references/modal-design.md
Details
| Fact | Value | Source |
|---|---|---|
| Type | Skill | |
| Tool | Slack | |
| Publisher | Slack | source |
| Official status | OfficialSlack's developer docs document this plugin and link the slackapi repository | source |
| Needs an API key or sign-in | Not stated in its documentation | |
| Includes scripts | No | source |
| Platforms | Not stated in its documentation | |
| AI clients | Claude Code, Cursor, Codex | source |
| Licence | MIT | source |
| Pricing | Not stated in its documentation | |
| Activity | Last commit Nov 11, 2026165 GitHub starsDownload data not available (not on npm or PyPI) | source |
| Links | Repository Website |
Sources
- GitHub repositorygithub.com/slackapi/slack-skills-plugin · Backs: AI clients, Publisher, Activity, LicenceNov 11, 2026
- Skill file (SKILL.md)github.com/slackapi/slack-skills-pluginNov 10, 2026
- Licence file (LICENSE)github.com/slackapi/slack-skills-plugin · Backs: LicenceNov 13, 2026
- Web pagedocs.slack.dev · Backs: Official statusNov 13, 2026
- Folder in the repository (block-kit)github.com/slackapi/slack-skills-plugin · Backs: Includes scriptsNov 10, 2026