Nanoclaw slack-formatting

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

install

source · Clone the upstream repo

git clone https://github.com/qwibitai/nanoclaw

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/qwibitai/nanoclaw "$T" && mkdir -p ~/.claude/skills && cp -r "$T/container/skills/slack-formatting" ~/.claude/skills/qwibitai-nanoclaw-slack-formatting && rm -rf "$T"

manifest: container/skills/slack-formatting/SKILL.md

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

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

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