slack-formatting

slack-formatting is a skill for Claude Code, Codex from BreadchainCoop/labor.fun. It costs 36 tokens per session (682 once invoked), scanned A, a copy of slack-formatting, MIT.

Instructions for formatting messages in Slack's mrkdwn syntax, Slack's version of lightweight text formatting.

In plain words
What is it for?
Use them when replying in Slack to format emphasis, code, links, mentions, and simple lists correctly.
Why use it?
They prevent ordinary Markdown from displaying incorrectly in Slack messages.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/breadchaincoop/labor.fun/slack-formatting
Any agent
npx skills add BreadchainCoop/labor.fun --skill slack-formatting
Clone the repo
git clone --depth 1 https://github.com/BreadchainCoop/labor.fun

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for slack-formatting

README.md
[![agentmods](https://agentmods.dev/badge/skills/breadchaincoop/labor.fun/slack-formatting.svg)](https://agentmods.dev/skills/breadchaincoop/labor.fun/slack-formatting)
Your own site
<a href="https://agentmods.dev/skills/breadchaincoop/labor.fun/slack-formatting"><img src="https://agentmods.dev/badge/skills/breadchaincoop/labor.fun/slack-formatting.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 682 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00036 $0.00682
Opus 5 $0.00018 $0.00341
Sonnet 5 $0.00007 $0.00136
Haiku 4.5 $0.00004 $0.00068

Measured 4d ago against content hash dd8eeb788015, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

slack-formatting scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to slack-formatting — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

container/skills/slack-formatting/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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>

Read the full file on GitHub · 95 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 95 lines · 36 tokens per session scan A dd8eeb788015

Subscribe to this mod's changes

slack-formatting is a skill published in the GitHub repository BreadchainCoop/labor.fun (2 stars, last pushed 2d ago), licensed MIT. It adds 36 tokens to every session and 682 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to slack-formatting, differing in 0 lines, and is treated as a copy.

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