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mcp/skillhub

Agent Skill

Add Mattermost skill

add-mattermostnanocoai/nanoclaw.claude/skills/add-mattermost/SKILL.md

Add a self-hosted or cloud Mattermost bot channel through the Chat SDK bridge, reusing a healthy server when available and linking to official server setup guidance when needed.

31kMIT

always on

39 tokname + description

once used

3,972 tokSKILL.md body

bundled files

107 scripts

repo stars

31kGitHub

Install the Add Mattermost skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/nanocoai/nanoclaw --skill add-mattermost

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/nanocoai/nanoclaw.git /tmp/nanoclaw
mkdir -p ~/.claude/skills
cp -R /tmp/nanoclaw/.claude/skills/add-mattermost ~/.claude/skills/add-mattermost

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

WhenWhat loadsCost
Every sessionName and description39 tok
When the agent uses itThe SKILL.md instructions3,972 tok
Only if opened10 bundled files (28 KB)varies

Until it is used, add-mattermost costs about 35× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 64 skills from nanocoai/nanoclaw would load 3,369 tokens of descriptions. Skills vs MCP study

Checks

  • Ships scripts the agent can run. Read them before installing.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

  • Add Mattermost Channel
  • Discover the server first
  • Apply
  • 1. Detect or select the server
  • 2. Set the server SiteURL
  • 3. Copy and register the channel
  • 4. Create and authenticate the bot
  • 5. Configure authenticated card callbacks
  • 6. Resolve the owner's DM
  • 7. Build, test, and restart
  • Next steps
  • Channel information
  • Troubleshooting

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