Is Block Kit safe and trustworthy?

tashan scores Block Kit on public evidence — see the measured signals. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install Block Kit?

Drop the skill folder into ~/.claude/skills/ (user scope) or .claude/skills/ (project scope).

Who maintains Block Kit?

source: slackapi/slack-mcp-plugin.

‹ The Index

Block Kit

skill

Help developers build and validate Block Kit layouts for Slack messages, modals, and Home tabs. Provides authoritative block references and validates with the blocks.validate API. Use this skill whenever the developer wants to compose Slack message layouts, build modals/forms/dialogs, design Home tab interfaces, create interactive messages with buttons or menus, modify existing Block Kit JSON, or asks about any Slack UI component (sections, actions, inputs, headers, alerts, tables, carousels). Also trigger when they mention "blocks", "Block Kit Builder", want to preview or see the rendered version of blocks, or paste JSON containing block structures like "type": "section".

Works with: Claude Code (native) · Cursor, Codex CLI (manual)
native: this artifact type is that client's own format

Category: Other — see all ranked ›

Install (Claude Code):

cp -r block-kit ~/.claude/skills/

Adoption: 1 repos

Security audit

Not scanned yet. We audit npm-published capabilities for known advisories, install-time scripts and permission surface; this one has no npm package we can resolve, or has not reached the queue.

source ↗ · skill:slackapi/block-kit

Already running this? npx tashan-cli doctor checks your whole config against the Index — how it works ›

Measured 2026-08-03 · scorer s5 · how · something wrong here?