obsidian

obsidian is a skill for Claude Code, Codex from fredrikaverpil/dotfiles. It costs 116 tokens per session (1,687 once invoked), scanned A, original, MIT.

A tool for finding, reading, navigating, and editing notes in an Obsidian vault. Obsidian is an app that stores linked notes as Markdown files.

In plain words
What is it for?
Use it to look up or update daily notes, meeting notes, scratch notes, and other personal knowledge-base content.
Why use it?
It lets the agent work with personal notes without requiring the Obsidian app to be open. It also follows the vault's configured location and editing conventions.

Skill for Claude CodeCodex

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

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.

agentmods
npx agentmods add skills/fredrikaverpil/dotfiles/obsidian
Any agent
npx skills add fredrikaverpil/dotfiles --skill obsidian
Clone the repo
git clone --depth 1 https://github.com/fredrikaverpil/dotfiles

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/fredrikaverpil/dotfiles/obsidian.svg)](https://agentmods.dev/skills/fredrikaverpil/dotfiles/obsidian)
Your own site
<a href="https://agentmods.dev/skills/fredrikaverpil/dotfiles/obsidian"><img src="https://agentmods.dev/badge/skills/fredrikaverpil/dotfiles/obsidian.svg" alt="Measured on agentmods" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,687 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00116 $0.01687
Opus 5 $0.00058 $0.00843
Sonnet 5 $0.00023 $0.00337
Haiku 4.5 $0.00012 $0.00169

Measured 6d ago against content hash 59e783be8664, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, 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 6d 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.

stow/shared/.claude-work/skills/obsidian/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian vault

The user keeps a personal Obsidian vault as plain markdown files synced via iCloud. The vault is just a directory tree, so all standard Unix tools work — no Obsidian app required to read or write notes.

Where it lives

/Users/fredrik/Library/Mobile Documents/iCloud~md~obsidian/Documents/work

Because the path contains spaces and tildes, always quote it in shell commands. A useful shorthand is to assign it once per session:

VAULT="/Users/fredrik/Library/Mobile Documents/iCloud~md~obsidian/Documents/work"

If $VAULT doesn't exist (e.g. on a non-mac host or before iCloud has synced), stop and tell the user — don't fabricate notes.

How the user normally interacts with it

The user edits the vault from Neovim via the obsidian.nvim plugin. Configuration (workspace path, daily-notes folder, template settings, keymaps) lives in nvim-fredrik/plugin/obsidian.lua in this dotfiles repo — read it when you need the current setup, since it changes occasionally and this skill should not duplicate it.

When suggesting a workflow, prefer pointing the user at the relevant keymap or :Obsidian command (look them up in that file) over spawning a shell command, unless they're clearly outside Neovim.

Folder layout

$VAULT/
├── Daily/                  # Daily notes, one file per day: YYYY-MM-DD.md
├── Meeting notes/          # Meeting notes (template: meeting_notes.md)
├── Resources/              # PARA-style references (Go/, Postgres/, Neovim/, ...)
├── Ideas/                  # Half-baked ideas
├── Archive/                # Things no longer active
├── Clippings/              # Web clippings
├── _templates/             # Frontmatter templates (daily.md, meeting_notes.md)
├── _excalidraw/            # Excalidraw drawings
├── .trash/                 # Obsidian's soft-delete bin (treat as deleted)
└── *.md                    # A handful of loose top-level notes
                            # (scratchpad.md, Running.md, LEARNING.md, blog drafts)

Read the full file on GitHub · 168 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. 6d ago First seen · 168 lines · 116 tokens per session scan A 59e783be8664

Subscribe to this mod's changes

obsidian is a skill published in the GitHub repository fredrikaverpil/dotfiles (257 stars, last pushed yesterday), licensed MIT. It adds 116 tokens to every session and 1,687 once invoked, about $0.0006 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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