> ## Documentation Index
> Fetch the complete documentation index at: https://docs.worksong.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Connections, Skills and Tool servers

> Extend what an Agent can reach and do.

## Connections

A Connection links one of your accounts so Agents can use it. Most apps connect through Composio with OAuth or an API key. Agents find the tools of a connected app on demand, so a large app does not fill the Agent's context. If a connection is missing or expired, the Agent can show a card with Connect or Reconnect. WhatsApp connects separately by pairing a device; you choose which Agents may use it and whether an Agent auto-replies per chat.

## Skills

A Skill is a packaged instruction set (a `SKILL.md` plus files). You can create one, import from a public GitHub repository or a zip, and update it from its source. You switch Skills on per Agent. Limits apply (for example 50 Skills per owner and 20 switched on per Agent by default).

## Tool servers

A Tool server is a remote MCP server you add by address. You can store the headers it needs (write-only), press Test, review its tool list, switch tools on and attach it to an Agent (up to 3 per Agent, 5 per owner). If the server's list changes, it returns to **needs review** and the Agent keeps the list you accepted until you review again. Calls to its tools ask for approval; "Always allow" is stored per Agent, per tool and per accepted list.

> [!NOTE]
>
> Tool servers and Secrets can be switched off for an account. When off, their rows are hidden in the app.


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