> ## Documentation Index
> Fetch the complete documentation index at: https://c42d5cb-opencomputer.manicule.dev/llms.txt
> Use this file to discover all available pages before exploring further.
> For every page in one file, fetch https://c42d5cb-opencomputer.manicule.dev/llms-full.txt (large).
> To search and read these docs as tools, connect the MCP server at https://c42d5cb-opencomputer.manicule.dev/api/mcp.
> Every agent surface: https://c42d5cb-opencomputer.manicule.dev/.well-known/llms-manifest.json

# Subagents (/slack/subagents)

<!-- agent-signals: reading_time_min: 2 · est_tokens: 630 · updated: 2026-11-12 -->
Related: [Threads](/slack/threads.md), [Shared threads](/slack/shared-threads.md), [Linked and spawned threads](/slack/linked-and-spawned-threads.md), [Mid-turn messages](/slack/mid-turn-messages.md), [Permission modes](/slack/permission-modes.md), [Approvals, questions and plans](/slack/approvals-questions-plans.md)

> Subagents of a Claude Code session appear in a panel in the thread; its buttons work in one-machine mode only

A Claude Code session can start subagents, in the foreground or in the background. Codex sessions have no subagents.

<Frame>
  <img src="/_assets/4edfc559150578abf773192945807d1fcd9342565c9bb51b26eb6260e5fefc61" alt="The subagents panel: a header counting 3 subagents, a running row with a Stop button, a finished row with a Result button and a stopped row" width="1552" height="1160" />
</Frame>

## Panel

The panel is one Slack message, updated in place; the turn's text continues in a new message under it. Its header counts the subagents running, done, failed and stopped. Each subagent has one row:

| Part          | Content                                                                       |
| ------------- | ----------------------------------------------------------------------------- |
| Icon          | ⏳ running, ✅ done, ❌ failed, ⏹ stopped                                        |
| Name and type | The subagent's name and agent type; "background" if it runs in the background |
| Activity      | What it is doing now, or the first line of its result once finished           |
| Counters      | Tool calls, tokens, elapsed time                                              |

The panel shows the latest 45 subagents. It keeps updating after its turn ends while background subagents run.

## Buttons

| Button | Shown on                     | Effect                                                 |
| ------ | ---------------------------- | ------------------------------------------------------ |
| Stop   | A running row                | Stops that subagent.                                   |
| Result | A finished row with a result | Opens the result in a modal (first 11,900 characters). |

<Frame>
  <img src="/_assets/2e9328b444501fa87544d92dc6792b1243c646cdfb0c361e3bd81196421ebac0" alt="The Result modal: the subagent's name as title, its status and type, its result and a Close button" width="1552" height="1096" />
</Frame>

* The buttons work in one-machine mode only. In a team install a click does nothing: use `!stop` to stop the turn, and ask the agent in the thread for a subagent's result.
* After the process restarts, the buttons on earlier panels do nothing.

## Idle exit and the API

The [idle exit](/slack/threads#idle-exit) waits while a subagent runs: the 2 hours count from the end of the last one.

The same subagents are listed over the API; see Subagents.