arbor-agent-search

arbor-agent-search is a skill for Claude Code, Codex from RUC-NLPIR/Arbor. It costs 55 tokens per session (684 once invoked), scanned A, original, Apache-2.0.

A related-work and novelty review step for Arbor, used after an experiment produces a validated, effective research result. It surveys earlier work and records a structured summary on the result.

In plain words
What is it for?
Finding prior work around successful experiments, annotating candidate results, comparing related techniques, and informing merge decisions.
Why use it?
It keeps literature-search effort focused on results that may be merged and helps identify whether an idea is genuinely new before that decision.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the arbor plugin — 11 skills shipped together

Good fit Finding prior work around successful experiments, annotating candidate results, comparing related techniques, and informing merge decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ruc-nlpir/arbor/arbor-agent-search
About the project

Arbor is an autonomous research agent that proposes hypotheses, edits code, runs experiments, and retains improvements that succeed on held-out data in a growing hypothesis tree. Researchers use it to investigate problems and iteratively optimize solutions with real experiments. The catalogue skills and plugin expose Arbor's research-agent workflow to coding agents.

RUC-NLPIR/Arbor · 1,060 stars · on GitHub · ruc-nlpir.github.io

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add RUC-NLPIR/Arbor --skill arbor-agent-search
Clone the repo
git clone --depth 1 https://github.com/RUC-NLPIR/Arbor

Made for: Claude Code, Codex.

Or install arbor, the plugin that ships this one along with the rest of its 11 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for arbor-agent-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/ruc-nlpir/arbor/arbor-agent-search/github.svg)](https://agentmods.dev/skills/ruc-nlpir/arbor/arbor-agent-search)
Your own site
<a href="https://agentmods.dev/skills/ruc-nlpir/arbor/arbor-agent-search"><img src="https://agentmods.dev/badge/skills/ruc-nlpir/arbor/arbor-agent-search/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for arbor-agent-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/ruc-nlpir/arbor/arbor-agent-search"><img src="https://agentmods.dev/badge/skills/ruc-nlpir/arbor/arbor-agent-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 684 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00055 $0.00684
Opus 5 $0.00028 $0.00342
Sonnet 5 $0.00011 $0.00137
Haiku 4.5 $0.00006 $0.00068

Measured 10d ago against content hash acd467b6ac31, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

arbor-agent-search scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/arbor-agent-search/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Arbor Search Agent

Use this for post-experiment related-work annotation. It is not for internal codebase search; use normal file tools for that.

Eligibility Gate

By default, only search nodes that are validated and effective:

  • node status is done or merged;
  • node has a numeric score;
  • score improves over current trunk_score, or over baseline_score if trunk is unavailable.

Skip pending, running, unscored, and below-trunk nodes. This keeps novelty cost tied to merge candidates.

  • After RunExecutor returns a node with score > trunk_score.
  • Before GitMergeBranch when novelty or related work affects the decision.
  • After parallel executor results, annotate all sibling winners with SearchIdeaContextParallel.

Do not search trivial parameter tweaks, pure scale-ups, or internal codebase questions.

SearchAgent Task

The SearchAgent is a novelty scout. It does not implement, critique, or change the idea. It surveys prior work and writes a Markdown annotation to node.related_work.

Use 2-3 query angles:

  • technique class;
  • application domain;
  • key mechanism.

For ML/NLP literature, use English academic queries with words such as paper, arxiv, or survey; include one original-language query when useful.

Hard Caps

  • At most 2 search rounds.
  • Visit up to 5 pages total.
  • Keep the result short enough for a researcher to judge novelty quickly.

Final JSON Schema

When running an isolated SearchAgent, ask it to emit only:

{
  "summary": "2-4 sentences describing prior work.",
  "related_papers": [
    {
      "title": "Paper title",
      "url": "https://...",
      "one_line_relevance": "Why this is relevant."
    }
  ],
  "novelty_assessment": "novel | partial-overlap | prior-art-exists",
  "overlap_risks": "What specifically overlaps, or 'none'."
}

Render it into:

### Summary
...

### Related Papers
- [Title](url) - relevance

### Novelty
novel | partial-overlap | prior-art-exists - justification

### Overlap Risks
...

Read the full file on GitHub · 111 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 111 lines · 55 tokens per session scan A acd467b6ac31

Subscribe to this mod's changes

arbor-agent-search is a skill published in the GitHub repository RUC-NLPIR/Arbor (1,060 stars, last pushed 2d ago), licensed Apache-2.0. It adds 55 tokens to every session and 684 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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