obsidian

A set of instructions for working with Obsidian, an app that stores linked Markdown notes in a vault, which is simply a notes folder.

In plain words
What is it for?
Use it to manage notes, daily entries, links, YAML details called frontmatter, Zettelkasten structures, and vault syncing.
Why use it?
It clarifies which tools to use for finding, editing, moving, and linking notes, reducing mistakes in the vault.

Skill for Claude CodeCodex

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

Made for: Claude Code, Codex.

Per session 184 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,445 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 $0.00184 $0.01445
Opus 5 $0.00092 $0.00723
Sonnet 5 $0.00037 $0.00289
Haiku 4.5 $0.00018 $0.00145

Measured 2d ago against content hash 7d5249c2dfe2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

plugins/obsidian/skills/obsidian/SKILL.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian Vault Skill

Contents

Obsidian vault = a normal folder of Markdown files on disk. Use obsidian-cli only when its features add real value (search, link-aware move/rename, frontmatter ops, opening in Obsidian).

Tool Selection Guide

Task Best tool
Read note content Read tool
Edit note content Edit tool
Create new note Write tool
Create note + open in Obsidian obsidian-cli create --open
Search note names obsidian-cli search "query"
Search inside notes obsidian-cli search-content "query"
Broad content search / regex Grep tool on vault path
Find notes by name pattern Glob tool on vault path
Move/rename note (updates wikilinks) obsidian-cli move
View/edit frontmatter obsidian-cli frontmatter
Open daily note obsidian-cli daily
List vault contents obsidian-cli list
Delete note obsidian-cli delete
Sync vault (no desktop) ob sync

Find the Vault

Never hardcode paths. Resolve the vault path first:

obsidian-cli print-default --path-only   # if default vault is set
cat ~/Library/Application\ Support/obsidian/obsidian.json  # otherwise

The config JSON has a vaults object; use the entry with "open": true. If multiple vaults exist, ask the user which to use, then: obsidian-cli set-default "<vault-folder-name>"

Working with Notes

Read: Use Read tool on the .md file directly. For backlink context: obsidian-cli print "Note" --mentions

Create: Use Write tool for simple creation. To also open in Obsidian: obsidian-cli create "Folder/Note" --content "..." --open. To append: add --append.

Read the full file on GitHub · 139 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 139 lines · 184 tokens per session scan A 7d5249c2dfe2

Subscribe to this mod's changes

obsidian is a skill published in the GitHub repository hamsurang/kit (19 stars, last pushed 4mo ago), licensed MIT. It adds 184 tokens to every session and 1,445 once invoked, about $0.0009 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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