What is cyber-slack AGENTS.md?

A repository-specific instruction file for AI coding assistants working on cyber-slack, a Slack command-line tool and MCP server. It documents the project overview, technologies, folder layout, and common commands.

Use it when changing cyber-slack to find the right packages and commands for building, testing, linting, formatting, and full verification.

It gives an agent the project context and rules needed to work in the repository without guessing how it is organized or verified.

How cyberuni/cyber-slack configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to cyberuni/cyber-slack. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/cyberuni/cyber-slack/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/cyberuni/cyber-slack

Made for: Codex, OpenCode.

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/instructions/cyberuni/cyber-slack/agents-md/github.svg)](https://agentmods.dev/instructions/cyberuni/cyber-slack/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/cyberuni/cyber-slack/agents-md"><img src="https://agentmods.dev/badge/instructions/cyberuni/cyber-slack/agents-md/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/instructions/cyberuni/cyber-slack/agents-md"><img src="https://agentmods.dev/badge/instructions/cyberuni/cyber-slack/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 541 This file is loaded in full into every session.

When invoked 541 The same file — it is already loaded in full.

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	$0.00541	$0.00541
Opus 5.5	$0.00216	$0.00216
Sonnet 5.5	$0.00108	$0.00108
Haiku 4.5	$0.00054	$0.00054

Measured 2mo ago against content hash 517f18213308, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cyber-slack AGENTS.md 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 2mo 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.

AGENTS.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to AI coding assistants when working with code in this repository.

Project Overview

cyber-slack is a Slack CLI and MCP server for AI agents. It provides:

CLI: Command-line interface for interacting with Slack
MCP Server: Model Context Protocol server exposing Slack tools to AI agents

Tech Stack

Language: TypeScript (strict mode)
Runtime: Node.js 22+
Build: tsdown
Test: Vitest
Lint/Format: Biome
Monorepo: pnpm workspaces + Turbo
Versioning: Changesets

Repository Structure

packages/
  cyber-slack/        # Main package: CLI + MCP server
    src/
      cli.ts          # CLI entry point
      mcp.ts          # MCP server entry point
      client.ts       # Slack client wrapper
      index.ts        # Public API exports

Commands

pnpm verify           # Full verification: lint + build + typecheck + test + knip
pnpm build            # Build all packages
pnpm test             # Run tests
pnpm check            # Run Biome linting/formatting check
pnpm check:fix        # Fix linting/formatting issues
pnpm cs <script>      # Run script in packages/cyber-slack

Environment Variables

Variable	Required	Description
`SLACK_BOT_TOKEN`	Yes	Slack Bot User OAuth Token (xoxb-...)

Code Conventions

Use TypeScript strict mode
Prefer functional style
Use named exports (not default exports)
Test files: *.test.ts for unit tests, *.system.ts for live API tests
Follow Conventional Commits: feat:, fix:, refactor:, test:, docs:, chore:

MCP Tools

Tools are registered in src/mcp.ts. Each tool should:

Check for required environment variables
Use the Slack client from client.ts
Return structured responses with content array
Handle errors gracefully with isError: true

Adding New Tools

Add the tool registration in src/mcp.ts
Add tests in src/*.test.ts
Update the README tool table
Create a changeset: pnpm changeset

Read the full file on GitHub · 74 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.

2mo ago First seen · 74 lines · 541 tokens per session scan A 517f18213308

Subscribe to this mod's changes

cyber-slack AGENTS.md is an instructions file published in the GitHub repository cyberuni/cyber-slack (1 stars, last pushed 2d ago), licensed MIT. It adds 541 tokens to every session, about $0.0022 per session on Opus 5.5. 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.

cyber-slack AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
cyber-slack AGENTS.mdcyberuni/cyber-slack	Instructions file	1	2d ago	MIT	A	541	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

cyber-slack: Instructions file for Codex