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agent-brain: Skill for Claude Code

.agents/skills/vault-search/SKILL.md

vault-search is a skill for Claude Code from Railly/agent-brain. It costs 12 tokens per session (312 once invoked), scanned A, original, MIT.

A command that searches your personal note vault and combines the relevant notes into a structured research report. A note vault is a folder of saved notes, rather than an internet search engine.

In plain words
What is it for?
Use it to research a topic using only your existing notes and identify useful conclusions or next actions.
Why use it?
It helps you find what you have already written without manually checking every folder. It also points out themes, disagreements, missing information, and related notes.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: installed under .agents/ (shared by several agents).

This is Railly/agent-brain's own configuration. It tells Claude Code how to work on agent-brain itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agent-brain configures →

not rated 22repo 3mo ago A scan 12 tokens original MIT
View source ↗ Railly/agent-brain railly.dev
Reuse

Borrowing it

Nothing to install: this file belongs to Railly/agent-brain. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Railly/agent-brain/main/.agents/skills/vault-search/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Railly/agent-brain

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 vault-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/railly/agent-brain/vault-search/github.svg)](https://agentmods.dev/skills/railly/agent-brain/vault-search)
Your own site
<a href="https://agentmods.dev/skills/railly/agent-brain/vault-search"><img src="https://agentmods.dev/badge/skills/railly/agent-brain/vault-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 vault-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/railly/agent-brain/vault-search"><img src="https://agentmods.dev/badge/skills/railly/agent-brain/vault-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 312 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 $0.00012 $0.00312
Opus 5.5 $0.00005 $0.00125
Sonnet 5.5 $0.00002 $0.00062
Haiku 4.5 $0.00001 $0.00031

Measured 2mo ago against content hash a31055e1212c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vault-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 2mo 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.

.agents/skills/vault-search/SKILL.md · 59 lines

What it actually says

Research in vault: $ARGUMENTS

IMPORTANT: Be direct

  • Search vault with Grep, read notes, synthesize
  • This is vault-only search (not web)

Flow

  1. Keyword search (primary) Search across all vault folders using Grep with the topic keywords:

    • 01_Inbox/
    • 02_Journal/
    • 03_Garden/
    • 04_Projects/
    • 05_Areas/
    • 06_Content/

  2. Read top results thoroughly

    • Read matching files for full context
    • Deduplicate overlapping results

  3. Synthesize findings into summary

Output Format

# Vault Research: {topic}

## Matches
- [[note1]]: {key insight}
- [[note2]]: {key insight}

## Key Themes
1. **Theme 1**
   - Supporting: [[note1]], [[note2]]
   - Insight: {synthesis}

## Contradictions
- {where ideas conflict}

## Gaps
- What's missing in vault

## Connections
- Related: [[topic1]], [[topic2]]

## Next Steps
1. {specific action}

When to Use

  • /vault-search - search YOUR vault (what you already know)
  • /research - search the WEB (new information)
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. 2mo ago First seen · 59 lines · 12 tokens per session scan A a31055e1212c

Subscribe to this mod's changes

vault-search is a skill published in the GitHub repository Railly/agent-brain (22 stars, last pushed 3mo ago), licensed MIT. It adds 12 tokens to every session and 312 once invoked, about $0.0000 per session on Opus 5.5. 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.

Memory and contextResearch
Related

vault-search compared with skills from other repositories

vault-search next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
vault-searchRailly/agent-brainSkill223mo agoMITA12Claude Code
knowledge-ingestopenclaw/openclawSkill394kyesterdayMITA80Claude Code, Codex
mem0-oss-to-platformmem0ai/mem0Skill68k2d agoApache-2.0A217Claude Code, Codex
forgetasgeirtj/system_prompts_leaksSkill71k2d agoCC0-1.0A74Claude Code, Codex
Cortexdanielmiessler/LifeOSSkill20kyesterdayMITA184Claude Code
memoryopensquilla/opensquillaSkill7.1k6d agoApache-2.0A44Claude Code, Codex
ha-data-storesshiwenwen/hope-agentSkill1.9kyesterdayMITA115Claude Code, Codex