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slack-formatting

Format messages for Slack using mrkdwn syntax.

Skill by johnohhh1

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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/johnohhh1-slack-formatting

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About

Format messages for Slack using mrkdwn syntax. Use when responding to Slack channels (folder starts with "slack_" or JID contains slack identifiers).

Use cases: productivity

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/slack-formatting

What's inside

Skill name
slack-formatting
Description
Format messages for Slack using mrkdwn syntax. Use when responding to Slack channels (folder starts with "slack_" or JID contains slack identifiers).
License
MIT
Instructions
91 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Slack Message Formatting (mrkdwn)

When responding to Slack channels, use Slack's mrkdwn syntax instead of standard Markdown.

## How to detect Slack context

Check your group folder name or workspace path:
- Folder starts with `slack_` (e.g., `slack_engineering`, `slack_general`)
- Or check `/workspace/group/` path for `slack_` prefix

## Formatting reference

### Text styles

| Style | Syntax | Example |
|-------|--------|---------|
| Bold | `*text*` | *bold text* |
| Italic | `_text_` | _italic text_ |
| Strikethrough | `~text~` | ~strikethrough~ |
| Code (inline) | `` `code` `` | `inline code` |
| Code block | ` ```code``` ` | Multi-line code |

### Links and mentions

```
<https://example.com|Link text>     # Named link
<https://example.com>                # Auto-linked URL
<@U1234567890>                       # Mention user by ID
<#C1234567890>                       # Mention channel by ID
<!here>                              # @here
<!channel>                           # @channel
```

### Lists

Slack supports simple bullet lists but NOT numbered lists:

```
• First item
• Second item
• Third item
```

Use `•` (bullet character) or `- ` or `* ` for bullets.

### Block quotes

```
> This is a block quote
> It can span multiple lines
```

### Emoji

Use standard emoji shortcodes: `:white_check_mark:`, `:x:`, `:rocket:`, `:tada:`

## What NOT to use

- **NO** `##` headings (use `*Bold text*` for headers instead)
- **NO** `**double asterisks**` for bold (use `*single asterisks*`)
- **NO** `[text](url)` links (use `<url|text>` instead)
- **NO** `1.` numbered lists (use bullets with numbers: `• 1. First`)
- **NO** tables (use code blocks or plain text alignment)
- **NO** `---` horizontal rules

## Example message

```
*Daily Standup Summary*

_March 21, 2026_

• *Completed:* Fixed authentication bug in login flow
• *In Progress:* Building new dashboard widgets
• *Blocked:* Waiting on API access from DevOps

> Next sync: Monday 10am

:white_check_mark: All tests passing | <https://ci.example.com/builds/123|View Build>
```

## Quick rules

1. Use `*bold*` not `**bold**`
2. Use `<url|text>` not `[text](url)`
3. Use `•` bullets, avoid numbered lists
4. Use `:emoji:` shortcodes
5. Quote blocks with `>`
6. Skip headings — use bold text instead

From johnohhh1/nanoclaw-codex, MIT.

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Last commit (this folder)
Mar 21, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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slack-formatting skill. Agent Mart. https://agentmart.dev/skills/johnohhh1-slack-formatting (last updated 2026-10-24)