obsidian

obsidian is a skill for Claude Code, Codex from furkangonel/cowrangler. It costs 24 tokens per session (1,627 once invoked), scanned A, original, MIT.

A guide for managing an Obsidian vault, a folder of linked Markdown notes. It covers creating notes, organizing them, adding links and tags, and querying notes with Dataview.

In plain words
What is it for?
Creating and updating notes, organizing projects and reference material, maintaining note metadata, adding backlinks, and finding notes with queries.
Why use it?
It helps keep a growing collection of notes consistent and searchable instead of leaving files scattered or difficult to connect.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Creating and updating notes, organizing projects and reference material, maintaining note metadata, adding backlinks, and finding notes with queries.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/furkangonel/cowrangler/obsidian
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 furkangonel/cowrangler --skill obsidian
Clone the repo
git clone --depth 1 https://github.com/furkangonel/cowrangler

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 obsidian

README.md
[![agentmods](https://agentmods.dev/badge/skills/furkangonel/cowrangler/obsidian/github.svg)](https://agentmods.dev/skills/furkangonel/cowrangler/obsidian)
Your own site
<a href="https://agentmods.dev/skills/furkangonel/cowrangler/obsidian"><img src="https://agentmods.dev/badge/skills/furkangonel/cowrangler/obsidian/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 obsidian

Your own site · 80×15
<a href="https://agentmods.dev/skills/furkangonel/cowrangler/obsidian"><img src="https://agentmods.dev/badge/skills/furkangonel/cowrangler/obsidian.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,627 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 $0.00024 $0.01627
Opus 5 $0.00012 $0.00813
Sonnet 5 $0.00005 $0.00325
Haiku 4.5 $0.00002 $0.00163

Measured 9d ago against content hash ee01f9ed7f0e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

obsidian 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 9d 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.

bundled_skills/note-taking/obsidian/SKILL.md · 272 lines

How it starts

The opening of the file, as written. The whole thing — 272 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian Vault Management

Goal

Create, update, and organize notes in an Obsidian vault programmatically. Query notes with Dataview syntax. Maintain a consistent vault structure.

Vault Structure

vault/
├── Daily Notes/          # YYYY-MM-DD.md
├── Projects/             # One folder per project
├── Areas/                # Ongoing responsibilities
├── Resources/            # Reference material
├── Archive/              # Inactive notes
└── _templates/           # Note templates

Use PARA method (Projects / Areas / Resources / Archive) as the default organization.

Frontmatter Conventions

Every note should have frontmatter:

---
title: Note Title
date: 2024-01-15
tags: [topic, subtopic]
aliases: [alternative-name]
status: draft | active | archived
related: [[Other Note]], [[Another Note]]
---
  • date: ISO 8601 (YYYY-MM-DD)
  • tags: lowercase, hyphenated
  • aliases: alternate names for search/linking
  • status: lifecycle state
  • related: explicit links (supplement to inline wikilinks)

Creating Notes Programmatically

Basic note creation

from pathlib import Path
from datetime import datetime

def create_note(vault_path: str, folder: str, title: str, content: str, tags: list[str] = []) -> Path:
    vault = Path(vault_path)
    target_dir = vault / folder
    target_dir.mkdir(parents=True, exist_ok=True)
    
    # Sanitize title for filename
    filename = title.replace("/", "-").replace(":", "-") + ".md"
    note_path = target_dir / filename
    
    frontmatter = f"""---
title: {title}
date: {datetime.now().strftime("%Y-%m-%d")}
tags: {tags}
---

"""
    note_path.write_text(frontmatter + content, encoding="utf-8")
    return note_path

Daily note

def create_daily_note(vault_path: str, template: str = "") -> Path:
    today = datetime.now().strftime("%Y-%m-%d")
    content = template or f"""# {today}

## Tasks
- [ ] 

## Notes

## Links
"""
    return create_note(vault_path, "Daily Notes", today, content)

Read the full file on GitHub · 272 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. 9d ago First seen · 272 lines · 24 tokens per session scan A ee01f9ed7f0e

Subscribe to this mod's changes

obsidian is a skill published in the GitHub repository furkangonel/cowrangler (2 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 1,627 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 2026-08-31.

Related

Other skills, from other repositories

scratch

Organize knowledge from an agent session into a scratchpad — a folder of files plus a scratchpad.json manifest. Use when a task generates notes, snippets, command output, diagrams, or artifacts worth keeping together for a session/activity.

NikiforovAll/scratchpad · 49 tokens

obsidian

Obsidian vault operations - create notes, search vault, manage tags, link notes, and sync with Obsidian markdown files.

chainlesschain/chainlesschain · 29 tokens

markdown-documents

Use when creating or editing Markdown documents, notes, reports, briefs, drafts, or other editable writing where Markdown should be the primary artifact format.

agent0ai/agent-zero · 33 tokens

query

Answer questions about the wiki by searching, reading, and synthesizing relevant scraps with [[Title]] citations. Use this when the user wants to query the wiki, ask what they have written about a topic, compare scraps, find related notes, or pull a synthesized overview from existing scraps.

boykush/scraps · 61 tokens

planning-with-scratchpad

Use when user explicitly requests planning with a scratchpad, or asks for persistent tracking of a complex task that the human can browse visually. Backs planning files with the scratch CLI so a pad's files are registered and viewable.

NikiforovAll/scratchpad · 54 tokens

priority-dashboard

Use this to rebuild, inspect, or temporarily steer {{username}}'s current PersonalOS priority dashboard from canonical Actions, Attention Triggers, and owner context. Do NOT use it to create, complete, or independently manage tasks; use task-manager for Action and Trigger lifecycle changes.

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