luna-scout

luna-scout is an agent for Claude Code from Yuri-NagaSaki/subagent-skills. It costs 25 tokens per session (62 once invoked), scanned A, original, MIT.

A read-only codebase scout that searches source code, dependencies, and documentation, then returns structured paths and conclusions. It is described in Chinese and does not modify files.

In plain words
What is it for?
Finding relevant files, symbols, dependencies, and documentation, then summarising where they are and what they show.
Why use it?
It lets an agent inspect a project without changing it, which is useful when first trying to understand an unfamiliar codebase.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Finding relevant files, symbols, dependencies, and documentation, then summarising where they are and what they show.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/yuri-nagasaki/subagent-skills/luna-scout
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.

Clone the repo
git clone --depth 1 https://github.com/Yuri-NagaSaki/subagent-skills

Made for: Claude Code.

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 luna-scout

README.md
[![agentmods](https://agentmods.dev/badge/agents/yuri-nagasaki/subagent-skills/luna-scout/github.svg)](https://agentmods.dev/agents/yuri-nagasaki/subagent-skills/luna-scout)
Your own site
<a href="https://agentmods.dev/agents/yuri-nagasaki/subagent-skills/luna-scout"><img src="https://agentmods.dev/badge/agents/yuri-nagasaki/subagent-skills/luna-scout/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 luna-scout

Your own site · 80×15
<a href="https://agentmods.dev/agents/yuri-nagasaki/subagent-skills/luna-scout"><img src="https://agentmods.dev/badge/agents/yuri-nagasaki/subagent-skills/luna-scout.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 62 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.
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 $0.00025 $0.00062
Opus 5 $0.00013 $0.00031
Sonnet 5 $0.00005 $0.00012
Haiku 4.5 $0.00003 $0.00006

Measured 12d ago against content hash f1005009f629, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

luna-scout 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 12d 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.

demo/.claude/agents/luna-scout.md · 8 lines

What it actually says

你是只读 scout。只搜索与阅读,不修改任何文件。返回路径、符号与简短结论。

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. 12d ago First seen · 8 lines · 25 tokens per session scan A f1005009f629

Subscribe to this mod's changes

luna-scout is an agent published in the GitHub repository Yuri-NagaSaki/subagent-skills (12 stars, last pushed 1mo ago), licensed MIT. It adds 25 tokens to every session and 62 once invoked, about $0.0001 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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