A command for preparing Slack messages, Slack's team chat service, using the surrounding channel, thread, or direct-message context.

Use it to draft a concise channel post, a reply to a specific thread, or a direct message, with an appropriate tone and optional mentions or emoji suggestions.

It helps you write a suitable message while keeping the conversation context and intended audience in view. It only presents a draft and does not send it.

draft-slack — Skill for Claude Code by kenshikobayashi

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.

Any agent

npx skills add kenshikobayashi/everything-claude-code-for-business --skill draft-slack

Clone the repo

git clone --depth 1 https://github.com/kenshikobayashi/everything-claude-code-for-business

Made for: Claude Code.

Or install everything-claude-code-for-business, the plugin that ships this one along with the rest of its 24 skills, 13 agents, 4 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack/github.svg)](https://agentmods.dev/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack)

Your own site

<a href="https://agentmods.dev/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack"><img src="https://agentmods.dev/badge/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack"><img src="https://agentmods.dev/badge/skills/kenshikobayashi/everything-claude-code-for-business/draft-slack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 343 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found 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.

Model	Per session	Once invoked
Fable 5.1	$0.00010	$0.00343
Opus 5	$0.00005	$0.00171
Sonnet 5	$0.00002	$0.00069
Haiku 4.5	$0.00001	$0.00034

Measured 9d ago against content hash ca7645050d8a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

draft-slack 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 9d 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.

skills/draft-slack/SKILL.md · 49 lines

What it actually says

You are executing the /draft-slack command. Draft a Slack message.

Input

$ARGUMENTS — Purpose description, optionally with flags:

--channel [name]: Target channel
--thread [url]: Reply to a specific thread
--dm [user]: Direct message to a user

Steps

Understand the purpose and target from the user's description
Check context — If channel or thread specified, read recent messages for context
Draft the message following Slack best practices:
- Keep top-level messages concise (under 3 short paragraphs)
- Use formatting: bold for key info, bullet points for lists
- Include @mentions only for people who need to take action
- Suggest appropriate emoji reactions (✅, 👀, 🔴) if relevant
Present the draft

Output Format

## Slack Draft

**To**: [#channel / @user / thread]

---

[Message content]

---

### Notes
- **Tone**: [professional/casual/urgent]
- **Mentions**: [@name — reason for mention]
- **Thread?**: [Should this be a thread reply instead of top-level?]

Constraints

NEVER send directly — always present as a draft
Don't @here or @channel unless the user explicitly requests it
For thread replies, maintain the tone and context of the existing thread
Keep messages scannable — no walls of text

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.

9d ago First seen · 49 lines · 10 tokens per session scan A ca7645050d8a

Subscribe to this mod's changes

draft-slack is a skill published in the GitHub repository kenshikobayashi/everything-claude-code-for-business (2 stars, last pushed 3mo ago), licensed MIT. It adds 10 tokens to every session and 343 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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