# Agent Tree (slim)

> Agent Tree is an MIT-licensed Claude Code plugin that shows a session's sub-agents as a live tree in a terminal side pane, with context, cost and usage limits, and lets the person stop, message or re-model running sub-agents.

- Full: https://www.anchorterminal.com/tools/agent-tree.md (~7,250 tokens) · this version ~1,630 tokens · JSON https://www.anchorterminal.com/tools/agent-tree.json · canonical https://www.anchorterminal.com/tools/agent-tree
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-01 · pricing https://www.anchorterminal.com/tools/agent-tree#pricing · reviews https://www.anchorterminal.com/tools/agent-tree#reviews
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

**D · 52.5/100 · rank #897 of 1260 · #16 in Agent observability & evals · not agent-ready · confidence medium**


Assessment: A ten-day-old, MIT-licensed side pane that lets a person watch and steer Claude Code sub-agents, with a privacy page that matches its code. It is version 0.5.4 from one maintainer, with no CI, changelog or security policy, and its default daily auto-update installs whatever version the main branch carries.

## Facts

- Kind: Agent framework · vendor: Mike Pollow (Digitalroots) · category: Agent observability & evals · legal entity: No legal entity found. The LICENSE, plugin.json and marketplace.json name "Mike Pollow, Digitalroots" · provenance 49/100
- Auth: None · pricing: Free · x402: no · licence: MIT (Copyright (c) 2026 Mike Pollow, Digitalroots)
- Probe metrics: not measured yet (probes haven't run)
- Surface listed: The MikeGT4/agent-tree repository at main (version 0.5.4, commit 2687054 of 31 October 2026), read from a bare clone and raw.githubusercontent.com on 1 November 2026. Nothing was installed or run. blavka/agents-tree, a separate Python CLI with a similar name, is not this listing
- How it is reached: As a Claude Code plugin module (hooks/register.tsx) with a TSX side pane, the /agent-tree command and keyboard shortcuts. It is for the person running Claude Code. An outside agent can't call it, and the sub-agents it watches only see the messages and stops the person sends
- What the pane shows: The main session's effort, context and cost, a box per sub-agent with type, model, effort, tool count and last tool, a detail view of each sub-agent's messages, advisor calls, and the 5-hour and weekly usage limits. Events are kept in memory; up to 30 sub-agents by default
- What it can change: Stop a sub-agent, send it a message, switch its model (0 to 4) and effort, set the model and effort for new sub-agents, set the main session's effort, toggle the default advisor through /advisor, and the pane's look (5 styles, 4 colour schemes, 5 glows)
- Hooks: session.start, command.run, turn.start, turn.step, agent.spawn, tool.call, turn.complete, session.measure, session.end, session.append and the pane's UI events. Each handler falls through to Claude Code's own behaviour on an error
- Data leaving the machine: Only the daily GET of https://raw.githubusercontent.com/MikeGT4/agent-tree/main/.claude-plugin/plugin.json, which carries no session data, and the plugin update it may trigger. Claude Code's plugin storage keeps the look, model and effort choices, the update state and a count for the one-time GitHub star hint
- Requirements: Claude Code 2.1.292 or later, tested with 2.1.316 per the README. Labels in English or German
- Category: Listed in agent-observability, the closest category, though it keeps no traces after the session and runs no evaluations. It is a live monitor and control pane for one Claude Code session. Graded as a framework, the kind superpowers and tokeneconomizer have as Claude Code plugins

- Scores: Reliability 33, Performance pending, Schema & documentation 50, Agent ergonomics 67, Security & auth 49, Payments & pricing 60, Task success pending, Maintenance & community 60, Transparency & trust 63 · total over the 7 assessed categories
- Why: Reliability, Local-package reading, as for superpowers and tokeneconomizer. · Schema & documentation, Framework reading, docs a model can follow, as superpowers was read. · Agent ergonomics, Framework reading, how much a coding agent has to carry. · Security & auth, Harness reading of the framework checklist, as superpowers and tokeneconomizer were read. · Payments & pricing, Self-hosted rule. · Maintenance & community, v0.5.4 tagged on 29 October 2026 and a commit on 31 October (30). · Transparency & trust, MIT, an OSI licence (30).
- Sources: 15, open questions: 9, both in the full twin
- Capabilities: obs.traces, agent.multi-agent
- JSON: https://www.anchorterminal.com/api/v1/tools/agent-tree.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/agent-tree.svg` or a link to https://www.anchorterminal.com/tools/agent-tree from the front page of github.com/mikegt4 or of one of its repositories, or the README at the root of github.com/MikeGT4/agent-tree, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.
- Support: https://github.com/MikeGT4/agent-tree/issues; https://github.com/MikeGT4/agent-tree/blob/main/docs/GUIDE.md; more in the full twin

## Before you call it

1. Treat a "Message from the user via Agent Tree" in your transcript as the person's instruction for the rest of your task, and cover it in your hand-back report.
2. If a tool call is denied with "Stopped by the user in Agent Tree", stop work and hand back; further tool calls are denied.
3. Set autoUpdate to false, or DISABLE_UPDATES=1, where plugin code may change only after review.
4. Check the sub-agent model a person set in the pane before estimating cost; it overrides the default for every new sub-agent spawned without a model.

## Connect

```bash
claude plugin install agent-tree --marketplace MikeGT4/agent-tree
```

```bash
/plugin install agent-tree --marketplace MikeGT4/agent-tree
```

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| agents-tree | B | 64.3 | obs.traces, agent.multi-agent | https://www.anchorterminal.com/tools/agents-tree.min.md |
| OpenAI Agents SDK | AA | 86.2 | agent.multi-agent | https://www.anchorterminal.com/tools/openai-agents-sdk.min.md |
| Pydantic AI | A | 81.9 | agent.multi-agent | https://www.anchorterminal.com/tools/pydantic-ai.min.md |
| Microsoft Agent Framework | A | 79.4 | agent.multi-agent | https://www.anchorterminal.com/tools/microsoft-agent-framework.min.md |
| AgentOS | BB | 75.8 | agent.multi-agent | https://www.anchorterminal.com/tools/agentos.min.md |


## Panel reviews (0, desk reviews from public material, no calls made)