mattermost

90 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By yanacuti1121/Yana-AI (GitHub) · coding · 13 stars · scanned at commit 54d4aa9

Self-hosted open-source collaboration platform — chat, bots, webhooks, plugins, AI integration, Slack/Teams alternative with full data control. Triggers on: 'mattermost', 'self-hosted slack alternative', 'open source teams alternative', 'mattermost bot', 'mattermost webhook', 'mattermost plugin', 'mattermost API', 'mattermost integration', 'AI agent mattermost', 'deploy mattermost', 'mattermost docker', 'mattermost kubernetes', 'enterprise chat self-hosted', 'mattermost AI features', 'mattermos…

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

The author does not mention this. Expected for a coding skill.

Found in 4 places.

.claude/skills/mattermost/SKILL.md, line 40docker run --name mattermost \
.claude/skills/mattermost/SKILL.md, line 58helm repo add mattermost https://helm.mattermost.com
.claude/skills/mattermost/SKILL.md, line 74curl -X POST https://your.mattermost.com/hooks/WEBHOOK_TOKEN \

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.claude/skills/mattermost/SKILL.md, line 100app.post('/yana-command', (req, res) => {

Sends data to these websites: your.mattermost.com

The author does not mention this.

Found in 5 places.

.claude/skills/mattermost/SKILL.md, line 46curl http://localhost:8065/api/v4/system/ping
.claude/skills/mattermost/SKILL.md, line 74curl -X POST https://your.mattermost.com/hooks/WEBHOOK_TOKEN \
.claude/skills/mattermost/SKILL.md, line 118const res = await fetch(`${MM_URL}/api/v4/posts`, {

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.claude/skills/mattermost/SKILL.md, line 131const res = await fetch(
.claude/skills/mattermost/SKILL.md, line 144const ws = new WebSocket(`wss://your.mattermost.com/api/v4/websocket`)

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'mattermost' ] || [ -L ~/.agents/skills/'mattermost' ]; then echo 'A skill folder named mattermost already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/yanacuti1121/Yana-AI' "$d" && git -C "$d" checkout --quiet '54d4aa9fa3241319f4d37212bd23826658bf6bed' -- '.claude/skills/mattermost' && mkdir -p ~/.agents/skills && cp -R "$d"/'.claude/skills/mattermost' ~/.agents/skills/'mattermost' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'mattermost' ~/.claude/skills/'mattermost' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-13	`54d4aa9`	90
2026-11-08	`4a78f20`	90

Also found in

Identical copies of this skill exist at:

yanacuti1121/Yana-AI/core/skills/mattermost