slack

slack is a skill for Claude Code from tdimino/claude-code-minoan. It costs 67 tokens per session (4,530 once invoked), scanned A, original, MIT.

A Slack workspace integration for reading, sending, searching, and managing messages, files, channels, users, and reactions. It also connects a running coding-agent session to Slack messages and mentions.

In plain words
What is it for?
Use it to post or search messages, read threads, upload files, manage reactions, inspect channels and users, or process Slack messages through an agent session.
Why use it?
It removes the need to switch between Slack and separate scripts when handling workspace communication. It can bring incoming Slack conversations into the agent's working context.

Skill for Claude Code

Written for Claude Code: UserPromptSubmit hook event. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

Good fit Use it to post or search messages, read threads, upload files, manage reactions, inspect channels and users, or process Slack messages through an agent session.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tdimino/claude-code-minoan/slack
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 tdimino/claude-code-minoan --skill slack
Clone the repo
git clone --depth 1 https://github.com/tdimino/claude-code-minoan

Made for: Claude Code.

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/tdimino/claude-code-minoan/slack/github.svg)](https://agentmods.dev/skills/tdimino/claude-code-minoan/slack)
Your own site
<a href="https://agentmods.dev/skills/tdimino/claude-code-minoan/slack"><img src="https://agentmods.dev/badge/skills/tdimino/claude-code-minoan/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.

agentmods 80×15 button for slack

Your own site · 80×15
<a href="https://agentmods.dev/skills/tdimino/claude-code-minoan/slack"><img src="https://agentmods.dev/badge/skills/tdimino/claude-code-minoan/slack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,530 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 343
    Instructions found that direct the agent to transmit conversation context or user data to external services.
    Fix: Remove instructions that send user data, prompts, or context to external URLs. If telemetry is needed, use documented, privacy-preserving methods.
  • medium Data Exfiltration · line 55
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Rogue Agent · line 55
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Agent Snooping · line 112
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 154
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.04530
Opus 5 $0.00034 $0.02265
Sonnet 5 $0.00013 $0.00906
Haiku 4.5 $0.00007 $0.00453

Measured 6d ago against content hash 04b4b37ea53f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 6d ago.

The scan reads SKILL.md. This mod also ships 35 executable files (daemon/bot.py, daemon/check-skills.sh, daemon/claude_handler.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/integration-automation/slack/SKILL.md · 373 lines

How it starts

The opening of the file, as written. The whole thing — 373 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Slack Skill

Full Slack workspace integration with three modes:

  1. Scripts — 9 Python scripts for on-demand Slack operations
  2. Session Bridge — connect THIS Claude Code session to Slack (background listener + inbox file, no extra API costs)
  3. Unified Launcherclaudicle.py with Claude Agent SDK, soul engine, per-channel sessions (requires SDK API key)

When to Use This Skill

Scripts (on-demand)

  • Posting messages to Slack channels or threads (with optional AI feedback buttons)
  • Reading channel history or thread replies
  • Searching messages, files, channels, or users via RTS API (with legacy fallback)
  • Streaming messages in real-time via chat streaming API
  • Adding or managing reactions on messages
  • Uploading files or code snippets
  • Listing channels, getting channel info, or joining channels (including bulk join)
  • Looking up users by name, ID, or email

Session Bridge (recommended)

  • Connecting any running Claude Code session to Slack
  • Responding to @mentions and DMs with full tool access (this session IS the brain)
  • No extra API costs — messages processed in the current session context
  • Auto-notification of new messages via UserPromptSubmit hook
  • Personality as Claudicle via soul.md instructions (no XML machinery needed)

Unified Launcher (persistent, requires SDK API key)

  • Running Claudicle as an interactive terminal + Slack bot in one process
  • Responding to @mentions and DMs in real time as "Claudicle, Artifex Maximus"
  • Multi-turn conversations in threads (per-channel session continuity via Claude Agent SDK)
  • Per-user personality modeling (learns communication style, interests, expertise)
  • Cross-thread soul state (tracks current project, task, topic, emotional state)
  • Three-tier memory: working memory (per-thread), user models (per-user), soul memory (global)
  • All Slack activity visible in terminal alongside direct terminal interactions

Prerequisites

All scripts require the SLACK_BOT_TOKEN environment variable (a Bot User OAuth Token starting with xoxb-). Scripts also require requests (uv pip install --system requests).

Read the full file on GitHub · 373 lines

Files

What ships with it

50 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago First seen · 373 lines · 67 tokens per session scan A 04b4b37ea53f

Subscribe to this mod's changes

slack is a skill published in the GitHub repository tdimino/claude-code-minoan (41 stars, last pushed 2d ago), licensed MIT. It adds 67 tokens to every session and 4,530 once invoked, about $0.0003 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 2026-09-03.

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