slack

slack is a skill for Claude Code, Codex from SeanHogg/Builderforce.ai. It costs 37 tokens per session (753 once invoked), scanned A, a copy of slack, MIT.

A tool for managing Slack, a team messaging service, from BuilderForceAgents.

In plain words
What is it for?
Use it to read, send, edit, delete, pin, or unpin messages; add or list reactions; and look up member information.
Why use it?
It avoids manual Slack work when an agent needs to organize conversations, communicate with a channel or person, or inspect message details.

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/seanhogg/builderforce.ai/slack
Any agent
npx skills add SeanHogg/Builderforce.ai --skill slack
Clone the repo
git clone --depth 1 https://github.com/SeanHogg/Builderforce.ai

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/seanhogg/builderforce.ai/slack.svg)](https://agentmods.dev/skills/seanhogg/builderforce.ai/slack)
Your own site
<a href="https://agentmods.dev/skills/seanhogg/builderforce.ai/slack"><img src="https://agentmods.dev/badge/skills/seanhogg/builderforce.ai/slack.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 753 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 80% 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 $0.00037 $0.00753
Opus 5 $0.00018 $0.00377
Sonnet 5 $0.00007 $0.00151
Haiku 4.5 $0.00004 $0.00075

Measured 5d ago against content hash a3954d2715d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 5d 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

80% identical to slack — 10 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.

agent-runtime/skills/slack/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Slack Actions

Overview

Use slack to react, manage pins, send/edit/delete messages, and fetch member info. The tool uses the bot token configured for BuilderForceAgents.

Inputs to collect

  • channelId and messageId (Slack message timestamp, e.g. 1712023032.1234).
  • For reactions, an emoji (Unicode or :name:).
  • For message sends, a to target (channel:<id> or user:<id>) and content.

Message context lines include slack message id and channel fields you can reuse directly.

Actions

Action groups

Action group Default Notes
reactions enabled React + list reactions
messages enabled Read/send/edit/delete
pins enabled Pin/unpin/list
memberInfo enabled Member info
emojiList enabled Custom emoji list

React to a message

{
  "action": "react",
  "channelId": "C123",
  "messageId": "1712023032.1234",
  "emoji": "✅"
}

List reactions

{
  "action": "reactions",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Send a message

{
  "action": "sendMessage",
  "to": "channel:C123",
  "content": "Hello from BuilderForceAgents"
}

Edit a message

{
  "action": "editMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234",
  "content": "Updated text"
}

Delete a message

{
  "action": "deleteMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Read recent messages

{
  "action": "readMessages",
  "channelId": "C123",
  "limit": 20
}

Pin a message

{
  "action": "pinMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

Unpin a message

{
  "action": "unpinMessage",
  "channelId": "C123",
  "messageId": "1712023032.1234"
}

List pinned items

{
  "action": "listPins",
  "channelId": "C123"
}

Read the full file on GitHub · 147 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. 5d ago First seen · 147 lines · 37 tokens per session scan A a3954d2715d7

Subscribe to this mod's changes

slack is a skill published in the GitHub repository SeanHogg/Builderforce.ai (5 stars, last pushed 2d ago), licensed MIT. It adds 37 tokens to every session and 753 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 80% identical to slack, differing in 10 lines, and is treated as a copy.