Arbor plugin for Grok Build
A generalist autonomous research agent — runs experiments, researches, and iteratively optimizes, autonomously.
How to install Arbor in Grok Build
grok plugin install RUC-NLPIR/Arbor --trustReview before you trust it. --trust lets this plugin's hooks, MCP servers and scripts run code on your computer. It's a community repo that neither xAI nor GrokStacks has reviewed, so read its code first.
We install this repo directly: Grok Build 1.0.62 can't install it through its own marketplace file. Then start a new Grok session, or press r in /plugins, to load it.
Command format: Grok Build's plugin guide
Runs a local MCP server (with npx, uvx or similar), so that tool needs to be installed, for example Node.js for npx.
What we checked: on Oct 18, 2026 it installed with grok 1.0.62 and Grok found 11 skills. That's an install check only: we haven't run it in a live Grok session.
What it contains
Skills (11)
arbor-agent-coordinator— Coordinator phase for Arbor: persistent ReAct loop, Idea Tree state, INIT/OBSERVE/IDEATE/SELECT/DISPATCH/DECIDE protocol, tool mapping, cycle caps, and coordinator-only behavior. Use after setup/intake and before phase-specific ideation, exarbor-agent-executor— Executor-dispatch phase for Arbor. Use when implementing an Idea Tree node through RunExecutor or RunExecutorParallel semantics: isolated git worktree, executor prompt construction, eval metadata injection, RunTraining policy, smoke/full evarbor-agent-ideate— Strict IDEATE-stage skill for Arbor. Use immediately after TreeView(format="constraints") when drafting Idea Tree nodes, enforcing the idea_drafting and first_principles_probe behavior, depth-aware idea levels, four-line TreeAddNode hypothearbor-agent-merge-eval— Merge and evaluation discipline for Arbor. Use for TreeSetMeta metadata, B_dev/B_test separation, eval command templates, score parsing, GitMergeBranch behavior, protected paths, required outputs, metric_direction, trunk/test score updates,arbor-agent-orchestrator— Top-level controller for recreating the open-source AutoResearch workflow as a suite of skills. Use when the user asks to run, emulate, extract, validate, or refine Arbor/AutoResearch behavior, especially when a coordinator must load phasearbor-agent-plugins-hitl-budget— Domain adaptation, human-in-the-loop, and budget policy phase for Arbor. Use when a run mentions plugins, plugin profiles, mle_kaggle, eval_contract, protected_paths, required_outputs, lifecycle hooks, convergence, budget_policy, RunTraininarbor-agent-resume-report— Resume, checkpoint, event, dashboard, finalization, and report phase for Arbor. Use when continuing interrupted sessions, handling running-node requeue, writing checkpoints/messages, consuming events.jsonl/run_stats, recovering best submissarbor-agent-search— Related-work and novelty annotation phase for Arbor. Use after a node has been experimentally validated, especially before merge decisions, to emulate SearchIdeaContext/SearchIdeaContextParallel/SearchStatus, validated-node gating, backgrouarbor-agent-setup-intake— Setup, intake, preflight, and launch-contract phase for open-source Arbor runs. Use when confirming a target project, metric, baseline, dev/test split, config/plugin settings, branch guard, session directory, or when translating a user goalarbor-agent-tools— Deterministic helper layer for emulating Arbor tools in Codex or Claude Code when native TreeView, TreeAddNode, TreeSetMeta, RunExecutor, GitMergeBranch, or report tooling is unavailable. Use for local state management, eval score capture,arbor-research-agent— Public entrypoint for the Arbor skill suite. Use when a user wants to run an Arbor-style autonomous research or optimization workflow from a natural-language goal, including initial clarification of objective, target project, data, metric,
MCP servers (1)
arbor— stdio server
About this listing
Arbor is a community plugin on GitHub by RUC-NLPIR, written as a Claude Code plugin that Grok Build installs. We install-checked it in Grok; we haven't run it in a live session or reviewed its code. When we installed it, Grok found 11 skills, 1 MCP server. Its license is Apache-2.0. We checked commit 7cdaf1fa6d77. It's one of 52 listings in the Research category on GrokStacks.
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Arbor FAQ
How do I install Arbor in Grok Build?
Run grok plugin install RUC-NLPIR/Arbor --trust. We install-checked this command in Grok Build. We install this repo directly: Grok Build 1.0.62 can't install it through its own marketplace file. Then start a new Grok session, or press r in /plugins, to load it.
Is Arbor an official Grok Build plugin?
No. Arbor is a community plugin on GitHub by RUC-NLPIR, not in xAI's official Grok Build marketplace. We checked that it installs and what Grok loads from it, but haven't run it in a live Grok session or reviewed its code.
What does Arbor include?
According to what Grok loaded in our install check, Arbor includes 11 skills, 1 MCP server: arbor-agent-coordinator, arbor-agent-executor, arbor-agent-ideate, arbor-agent-merge-eval, arbor-agent-orchestrator, arbor-agent-plugins-hitl-budget….
Details
- Type
- Plugin
- Category
- Research
- Source
- Community Claude Code plugin, installs in Grok
- License
- Apache-2.0
- Author
- RUC-NLPIR
- Version
- 0.1.0
- Keywords
- agents, autonomous-agents, autoresearch
- Source repo
- https://github.com/RUC-NLPIR/Arbor
- Checked commit
7cdaf1fa6d77- Homepage
- https://ruc-nlpir.github.io/Arbor/
- Checked by GrokStacks
- Install-checked in Grok Build on Oct 18, 2026; not run in a live session
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For maintainers: badge and embeds
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Markdown
[](https://grokstacks.com/p/arbor/)HTML
<a href="https://grokstacks.com/p/arbor/"><img src="https://grokstacks.com/badge.svg" alt="Listed on GrokStacks" width="164" height="28"></a>Embed card (static HTML and inline CSS, no JavaScript). Preview:
<a href="https://grokstacks.com/p/arbor/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #2a2e3c;border-radius:12px;background:#0a0b0f;color:#e8eaf0;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#e8eaf0">Arbor</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#9aa0b1">Community plugin for Grok Build · 11 skills, 1 MCP server</span><span style="display:block;margin:0 0 10px;color:#c9cdd8">A generalist autonomous research agent — runs experiments, researches, and iteratively optimizes, autonomously.</span><span style="font-size:12px;font-weight:600;color:#7c9cff">View on GrokStacks →</span></a>Markdown summary
**[Arbor on GrokStacks](https://grokstacks.com/p/arbor/)**: Community plugin for Grok Build with 11 skills, 1 MCP server. Install: `grok plugin install RUC-NLPIR/Arbor --trust`More on badges, embeds and keeping your listing up to date: GrokStacks for plugin authors.
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