slack-messaging

Guidance for composing well-formatted, effective Slack messages using mrkdwn syntax

INSTALLATION
npx skills add https://github.com/anthropics/knowledge-work-plugins --skill slack-messaging
Run in your project or agent environment. Adjust flags if your CLI version differs.

SKILL.md

Slack Messaging Best Practices

This skill provides guidance for composing well-formatted, effective Slack messages.

When to Use

Apply this skill whenever composing, drafting, or helping the user write a Slack message — including when using slack_send_message, slack_send_message_draft, or slack_create_canvas.

Slack Formatting (mrkdwn)

Slack uses its own markup syntax called mrkdwn, which differs from standard Markdown. Always use mrkdwn when composing Slack messages:

Format

Syntax

Notes

Bold

*text*

Single asterisks, NOT double

Italic

_text_

Underscores

Strikethrough

~text~

Tildes

Code (inline)

code

Backticks

Code block

BrowserAct

Let your agent run on any real-world website

Bypass CAPTCHA & anti-bot for free. Start local, scale to cloud.

Explore BrowserAct Skills →

Stop writing automation&scrapers

Install the CLI. Run your first Skill in 30 seconds. Scale when you're ready.

Start free
free · no credit card