skill CX Codex

c-slack — Claude Code skill: post to Slack from your agent

Q: How do I install c-slack in Claude Code?

Run `npx skills add daxaur/openpaw --skill c-slack -a claude-code`; the skill lands at `~/.claude/skills/c-slack/SKILL.md`.

Q: What does c-slack need to work?

An installed and authenticated `slack` CLI, plus a bot token with `chat:write` and `files:write` scopes.

Lets the agent talk to Slack through the CLI: channel and DM messages, file uploads, thread replies.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓

npx skills add daxaur/openpaw --skill c-slack -a claude-code

Open on GitHub

What c-slack does

This skill hands the agent the slack command. It posts text to a channel with #channel-name or to a person with @username, attaches files, and drops a reply into a thread when you pass --thread-ts. Slack markdown works too, so bold and italic arrive intact.

The skill lists the calls worth knowing: slack chat send, slack files upload, slack channels list. It tells the agent to confirm the recipient first, and to push follow-ups into a thread instead of flooding the channel.

Nothing runs without an installed, authenticated slack CLI, and the bot token has to carry chat:write and files:write. Rate limits are real, so a tight loop of sends will hit them.

What it helps with

post a build report to a team channel
share a PDF or screenshot in Slack
reply inside an existing thread
DM a teammate
list the channels a bot can see

Example prompts for the agent

Send a message to #general that the build passed
Upload report.pdf to #dev with the title “Weekly Report”
Reply in thread 1234567890.123456 in #general

How to install c-slack

1Skills CLI (Vercel)

npx skills add daxaur/openpaw --skill c-slack -a claude-code

2Manually: put the files in place

~/.claude/skills/c-slack/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/c-slack/

1Skills CLI (Vercel)

npx skills add daxaur/openpaw --skill c-slack -a codex

2Manually: put the files in place

.agents/skills/c-slack/SKILL.md

For all projects use ~/.agents/skills/

1Skills CLI (Vercel)

npx skills add daxaur/openpaw --skill c-slack -a cursor

2Manually: put the files in place

.cursor/skills/c-slack/SKILL.md

Cursor also reads .agents/skills/ and .claude/skills/

1GitHub CLI

gh skill install daxaur/openpaw c-slack

2Manually: put the files in place

.github/skills/c-slack/SKILL.md

1Skills CLI (Vercel)

npx skills add daxaur/openpaw --skill c-slack -a gemini-cli

2Platform CLI

gemini skills install https://github.com/daxaur/openpaw --path skills/c-slack

Manually: put the files in place

.devin/skills/c-slack/SKILL.md

The legacy .windsurf/skills/ path still works

Skills CLI (Vercel)

npx skills add daxaur/openpaw --skill c-slack -a opencode

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about c-slack

How do I install c-slack in Claude Code?

Run npx skills add daxaur/openpaw --skill c-slack -a claude-code; the skill lands at ~/.claude/skills/c-slack/SKILL.md.

What does c-slack do?

It lets the agent send Slack messages and files through the slack CLI, including DMs and thread replies.

What does c-slack need to work?

An installed and authenticated slack CLI, plus a bot token with chat:write and files:write scopes.

Source text

SKILL.md · MIT

---
name: c-slack
description: Send messages and upload files to Slack channels using the `slack` CLI. Supports direct messages, channel posts, file uploads, and thread replies.
tags: [slack, messaging, communication, files]
---

## What This Skill Does

Enables Claude to send messages and share files to Slack channels and users via the `slack` CLI tool.

## Available CLI Tool: `slack`

### Common Commands

```bash
# Send a message to a channel
slack chat send --channel "#general" --text "Hello team"

# Send a direct message to a user
slack chat send --channel "@username" --text "Hey!"

# Upload a file to a channel
slack files upload --channel "#general" --file ./report.pdf --title "Weekly Report"

# Post with markdown formatting
slack chat send --channel "#dev" --text "*Bold* and _italic_ text"

# Reply in a thread (requires thread timestamp)
slack chat send --channel "#general" --thread-ts "1234567890.123456" --text "Reply here"

# List channels
slack channels list
```

## Usage Guidelines

- Always confirm the target channel or user before sending
- Use `#channel-name` syntax for channels and `@username` for DMs
- File uploads support PDF, images, text, and most common formats
- Keep messages concise; use threads for follow-ups

## Notes

- Requires `slack` CLI to be installed and authenticated (`slack auth`)
- Bot token must have `chat:write` and `files:write` scopes
- Rate limits apply — avoid bulk sending in tight loops

setup-matt-pocock-skills Matt Pocock This skill configures a repository for Matt Pocock's engineering skills by setting its issue tracker, triage labels, and domain docs layout. Run it before using the other skills. 1,052,851installs ask-matt Matt Pocock Routes you to the right Matt Pocock skill or flow for the task at hand. Use it when you need a starting point for a feature, prototype, incoming issue, or hard bug. 766,587installs to-tickets Matt Pocock Turns a plan, spec, or conversation into small end-to-end tickets with explicit blockers. Use it to agree on the work breakdown before tickets go to a tracker. 711,230installs writing-plans Jesse Vincent This skill turns requirements for a multi-step task into an implementation plan before code changes begin. It helps when another engineer needs exact files, interfaces, and checks. CX Codex 282,859installs caveman-review JuliusBrussee Turns code review comments into one line per finding: location, problem, fix. Useful when a diff or PR needs a fast pass without the filler. CX Codex +1 411,800installs caveman-compress JuliusBrussee Compresses CLAUDE.md, todo lists, and other prose files into a shorter format while retaining a readable backup. CX Codex +1 411,500installs

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