A connection to Slack, a team messaging platform used for channels, threads, and direct messages. It can also read recent conversations for context.

Use it to post meeting summaries, send onboarding or training reminders, notify support requesters, deliver alerts, and read channel history.

It lets an agent communicate with teams and find relevant discussion without requiring people to copy messages into the agent.

slack — Skill for Claude Code and Codex by iblai

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 iblai/enterprise-agents --skill slack

Clone the repo

git clone --depth 1 https://github.com/iblai/enterprise-agents

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/iblai/enterprise-agents/slack.svg)](https://agentmods.dev/skills/iblai/enterprise-agents/slack)

Your own site

<a href="https://agentmods.dev/skills/iblai/enterprise-agents/slack"><img src="https://agentmods.dev/badge/skills/iblai/enterprise-agents/slack.svg" alt="Measured on agentmods" height="20"></a>

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 531 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	$0.00029	$0.00531
Opus 5	$0.00015	$0.00266
Sonnet 5	$0.00006	$0.00106
Haiku 4.5	$0.00003	$0.00053

Measured 7d ago against content hash dd6a12f5d1ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 7d 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/slack/SKILL.md · 38 lines

How it starts

The opening of the file, as written. The whole thing — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Slack

What it is

Slack is the primary team messaging and workflow platform for many enterprise organizations. Agents in this segment use Slack as the delivery channel for responses, meeting summaries, onboarding welcome messages, training reminders, and cross-functional notifications. It is also a source of conversational context when an agent needs to understand what was discussed in a thread or channel.

When to use this skill

Posting a meeting recap or action-item summary to a channel or thread
Sending a direct message to a new hire with onboarding instructions
Delivering a training deadline reminder or compliance alert to individuals or groups
Reading recent channel messages to provide context for a follow-up task
Notifying an IT support requester that their ticket has been resolved

Credentials

This skill authenticates using variables from ~/.openclaw/.env (template: .env.example at the config root). Required variables:

SLACK_BOT_TOKEN - OAuth bot token starting with xoxb-
SLACK_SIGNING_SECRET - used to verify incoming request signatures (if handling events)

Key operations

POST /api/chat.postMessage - post a message to a channel or DM
POST /api/chat.postEphemeral - send an ephemeral message visible only to one user
GET /api/conversations.history?channel=... - fetch recent messages from a channel
GET /api/users.lookupByEmail?email=... - resolve a user ID from email address
POST /api/conversations.open - open a DM channel with a user
POST /api/reactions.add - add an emoji reaction to a message

Notes

Bot must be invited to any channel it needs to post to or read from.
conversations.history requires the channels:history or groups:history scope depending on channel type.
Rate limits vary by method tier: Tier 1 = 1 req/min, Tier 3 = 50+ req/min. chat.postMessage is Tier 3.
Avoid storing message content outside the sandbox; treat conversation data as sensitive.
Use Block Kit for rich formatting (buttons, sections) rather than legacy attachments.

Read the full file on GitHub · 38 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.

7d ago First seen · 38 lines · 29 tokens per session scan A dd6a12f5d1ef

Subscribe to this mod's changes

slack is a skill published in the GitHub repository iblai/enterprise-agents (11 stars, last pushed 3mo ago), licensed MIT. It adds 29 tokens to every session and 531 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 2026-08-30.

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