arnesto: Skill for Claude Code

.agents/skills/wiki-setup/SKILL.md

wiki-setup is a skill for Claude Code, Codex from saski/arnesto. It costs 96 tokens per session (1,176 once invoked), scanned A, original, Unlicense.

A setup tool for creating a new Obsidian wiki vault, which is a folder of linked notes used as a personal knowledge base. It creates the required folders and configuration files.

In plain words
What is it for?
Use it to start a wiki from scratch, configure where the vault and source documents live, and prepare optional search collections.
Why use it?
It removes the manual work of deciding how to structure a new vault and configuring its source-document locations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; installed under .agents/ (shared by several agents); mentions Codex.

This is saski/arnesto's own configuration. It tells Claude Code and Codex how to work on arnesto 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 arnesto configures →

Reuse

Borrowing it

Nothing to install: this file belongs to saski/arnesto. 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/saski/arnesto/main/.agents/skills/wiki-setup/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/saski/arnesto

Made for: Claude Code, Codex.

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 wiki-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/saski/arnesto/wiki-setup.svg)](https://agentmods.dev/skills/saski/arnesto/wiki-setup)
Your own site
<a href="https://agentmods.dev/skills/saski/arnesto/wiki-setup"><img src="https://agentmods.dev/badge/skills/saski/arnesto/wiki-setup.svg" alt="Measured on agentmods" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,176 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 $0.00096 $0.01176
Opus 5 $0.00048 $0.00588
Sonnet 5 $0.00019 $0.00235
Haiku 4.5 $0.00010 $0.00118

Measured 3d ago against content hash 52b99ab5ba54, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

wiki-setup 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 3d 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/wiki-setup/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian Setup — Vault Initialization

You are setting up a new Obsidian wiki vault (or repairing an existing one).

Step 1: Create .env

If .env doesn't exist, create it from .env.example. Ask the user for:

  1. Where should the vault live?OBSIDIAN_VAULT_PATH

    • Default: ~/Documents/obsidian-wiki-vault
    • Must be an absolute path (after expansion)
  2. Where are your source documents?OBSIDIAN_SOURCES_DIR

    • Can be multiple paths, comma-separated
    • Default: ~/Documents
  3. Want to import Claude history?CLAUDE_HISTORY_PATH

    • Default: auto-discovers from ~/.claude
    • Set explicitly if Claude data is elsewhere
  4. Have QMD installed?QMD_WIKI_COLLECTION / QMD_PAPERS_COLLECTION

    • Optional. Enables semantic search in wiki-query and source discovery in wiki-ingest.
    • If unsure, skip for now — both skills fall back to Grep automatically.
    • Install instructions: see .env.example (QMD section).

Step 2: Create Vault Directory Structure

mkdir -p "$OBSIDIAN_VAULT_PATH"/{concepts,entities,skills,references,synthesis,journal,projects,_archives,_raw,.obsidian}
  • .obsidian/ — Obsidian's own config. Creates vault recognition.
  • projects/ — Per-project knowledge (populated during ingest).
  • _archives/ — Stores wiki snapshots for rebuild/restore operations.
  • _raw/ — Staging area for unprocessed drafts. Drop rough notes here; wiki-ingest will promote them to proper wiki pages and delete the originals.

Step 3: Create Special Files

index.md

---
title: Wiki Index
---

# Wiki Index

*This index is automatically maintained. Last updated: TIMESTAMP*

## Concepts

*No pages yet. Use `wiki-ingest` to add your first source.*

## Entities

## Skills

## References

## Synthesis

## Journal

log.md

---
title: Wiki Log
---

# Wiki Log

- [TIMESTAMP] INIT vault_path="OBSIDIAN_VAULT_PATH" categories=concepts,entities,skills,references,synthesis,journal

Read the full file on GitHub · 164 lines

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. 3d ago First seen · 164 lines · 96 tokens per session scan A 52b99ab5ba54

Subscribe to this mod's changes

wiki-setup is a skill published in the GitHub repository saski/arnesto (5 stars, last pushed today), licensed Unlicense. It adds 96 tokens to every session and 1,176 once invoked, about $0.0005 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 2026-09-03.

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