Can I use this to search through my Slack history?

Absolutely. You can perform keyword searches across messages and retrieve permalinks to specific points in a conversation or thread.

Does it support Slack Canvases?

Yes, it provides full CRUD support for Slack Canvases, including reading, creating, and performing targeted section edits using markdown.

Does this skill use a bot token or a user token?

This skill uses your personal user token via the Holla CLI, allowing Claude to interact with Slack workspaces as you rather than as a generic bot.

How does Claude verify that a Slack action was successful?

The skill includes a mandatory post-action verification step where Claude re-fetches the message or state to confirm content, formatting, and delivery.

Can Claude mention specific users in messages?

Yes. The skill follows a specific workflow to resolve usernames to Slack User IDs, ensuring that mentions correctly notify the intended recipients.

Slack Messenger & Canvas Manager

Name: Slack Messenger & Canvas Manager
Author: circlesac

bycirclesac

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Collaboration Tools

Enables Claude to interact with Slack workspaces to send messages, manage threads, search history, and collaborate on canvases.

This skill integrates the Holla CLI into Claude Code, allowing the AI to act as a full-featured Slack client using your own user token. It empowers Claude to participate in channel discussions, reply to specific threads with markdown support, search message history for context, and manage Slack Canvases for documentation and persistent collaboration. With built-in support for mentions, file uploads, and reactions, it streamlines team communication directly from the terminal while ensuring accuracy through mandatory post-action verification and user ID resolution.

Key Features

012 GitHub stars

02Comprehensive channel and member management with user ID resolution

03Full message lifecycle management including send, reply, edit, and delete

04Support for reactions, pins, stars, bookmarks, and file uploads/downloads

05Advanced message search with direct permalink retrieval

06Slack Canvas creation and structured editing with markdown support

Use Cases

01Search and summarize Slack discussions or threads to gain context on development tasks

02Automate status updates or project notifications directly to specific Slack channels

03Create and maintain technical documentation and project plans using Slack Canvases

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add circlesac/holla-cli slack

For use in Claude.ai and ChatGPT

Download Skill