slack-skills-plugin is a plugin that connects coding agents to Slack through a Slack MCP server and provides Slack-focused skills for users and developers. It is used with Claude Code, Cursor, Codex, and other coding agents to work with Slack and build Slack applications. The catalogue entries are the plugin's included skills, commands, MCP server, instructions, and settings.
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.
git clone --depth 1 https://github.com/slackapi/slack-skills-pluginWrote 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.
[](https://agentmods.dev/commands/slackapi/slack-skills-plugin/draft-announcement)<a href="https://agentmods.dev/commands/slackapi/slack-skills-plugin/draft-announcement"><img src="https://agentmods.dev/badge/commands/slackapi/slack-skills-plugin/draft-announcement/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.
<a href="https://agentmods.dev/commands/slackapi/slack-skills-plugin/draft-announcement"><img src="https://agentmods.dev/badge/commands/slackapi/slack-skills-plugin/draft-announcement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00013 | $0.00333 |
| Opus 5.5 | $0.00005 | $0.00133 |
| Sonnet 5.5 | $0.00003 | $0.00067 |
| Haiku 4.5 | $0.00001 | $0.00033 |
Grade A, and why
draft-announcement 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 1mo 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.
This is a copy
94% identical to draft-announcement — 2 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.
What it actually says
Given the topic or context provided in $ARGUMENTS:
-
Ask the user the following clarifying questions (skip any that are already clear from the provided context):
- Which channel should this announcement be posted in?
- Who is the target audience?
- What is the key message or call to action?
- Is there a deadline or date to highlight?
- What tone is appropriate — formal, casual, or urgent?
-
Compose the announcement following Slack formatting best practices:
- Use standard markdown:
**bold**for emphasis,_italic_for secondary emphasis,>for callouts. - Lead with the most important information — don't bury the point.
- Use a clear, descriptive opening line that works as a headline.
- Keep paragraphs short (2-3 sentences max).
- Use bullet points for lists of items or action steps.
- Include relevant emoji sparingly to aid scanning (e.g., :mega: for announcements, :calendar: for dates, :point_right: for action items).
- End with a clear call to action or next step if applicable.
- Use standard markdown:
-
Present the draft to the user for review. Offer to adjust tone, length, or formatting.
-
Once the user approves, use
slack_search_channelsto find the target channel ID, then useslack_send_message_draftto create the draft in Slack. -
Let the user know the draft is ready in Slack and they can review and send it from the Slack client.
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.
- 1mo ago First seen · 28 lines · 13 tokens per session scan A d7f5046a8da0
draft-announcement is a command published in the GitHub repository slackapi/slack-skills-plugin (160 stars, last pushed yesterday), licensed MIT. It adds 13 tokens to every session and 333 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to draft-announcement, differing in 2 lines, and is treated as a copy.
Other commands, from other repositories
webperf
Run a web performance audit via the web-performance-auditor persona.
spec
Start spec-driven development — write a structured specification before writing code.
constraints
A command for defining a project's quality standards through a short interview and a written CONSTRAINTS.md file. It records checks, thresholds, exceptions, and commands for enforcing them.
pm-arch
Scan project structure and generate Mermaid architecture diagrams + flowcharts under .pm/architecture/.
code-simplify
A code-review command that simplifies recently changed code or another chosen scope while preserving its behavior.
review
A command that reviews code changes across correctness, readability, architecture, security, and performance.