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---
title: Agents
description: See what Herdr can detect, how agent state works, and how integrations improve it.
---
Herdr is useful because it knows when agents are working, blocked, done, or idle. You can scan the sidebar instead of checking every pane manually.
## Supported agents
Automatic detection works out of the box for common coding agents.
| Agent | Idle / done | Working | Blocked |
| --- | --- | --- | --- |
| Pi | yes | yes | partial |
| Claude Code | yes | yes | yes |
| Codex | yes | yes | yes |
| Droid | yes | yes | yes |
| Amp | yes | yes | yes |
| OpenCode | yes | yes | yes |
| Grok CLI | yes | yes | yes |
Detected but less thoroughly tested: Gemini CLI, Cursor Agent, Cline, Kimi, and GitHub Copilot CLI.
Unsupported agents still run normally as terminal processes. They just may not get rich state unless you add an integration or report state over the socket API.
## How detection works
Herdr combines three signals:
1. foreground process detection
2. terminal output heuristics
3. integration state reports
Process detection tells Herdr which pane owns an agent. Heuristics infer state when no hook is available. Integrations provide the most precise semantic state.
## State rollups
The sidebar rolls state upward.
A blocked agent makes its pane, tab, and workspace look blocked. A working agent makes the workspace look active. A done agent stays visible until you view it.
This lets you scan many projects quickly.
## Direct integrations
Install integrations for agents that expose hooks or plugins:
```bash
herdr integration install pi
herdr integration install claude
herdr integration install codex
herdr integration install opencode
```
Check installed integration versions:
```bash
herdr integration status
```
Show only outdated integrations:
```bash
herdr integration status --outdated-only
```
## Custom agent labels
You can rename an agent target for display:
```bash
herdr agent rename 1-1 reviewer
herdr agent rename reviewer --clear
```
Targets accept terminal IDs, unique agent names, and legacy pane IDs.
## Custom status labels
Integrations can report a visual status label without changing semantic state.
```bash
herdr pane report-agent 1-1 \
--source custom:indexer \
--agent docs-bot \
--state working \
--custom-status indexing
```
`state` controls waits, notifications, and rollups. `custom-status` is only display text.
## Start agents from the CLI
Spawn an agent into Herdr from a script:
```bash
herdr agent start reviewer --cwd ~/project --split right -- pi
```
You can target a workspace or tab:
```bash
herdr agent start tests --workspace 1 --tab 1-1 -- cargo test
```
## Attach directly to an agent
Attach your current terminal to one agent terminal instead of the full Herdr UI:
```bash
herdr agent attach reviewer
```
Detach with `ctrl+b q`. Send a literal `ctrl+b` with `ctrl+b ctrl+b`.
Use `--takeover` if another direct attach client already owns input:
```bash
herdr agent attach reviewer --takeover
```
|
