obsidian

obsidian is a skill for Claude Code, Codex from SeanHogg/Builderforce.ai. It costs 22 tokens per session (650 once invoked), scanned A, a copy of obsidian, MIT.

A command-line way to work with Obsidian vaults, which are ordinary folders containing Markdown notes and related files. It can find vault locations and automate note-related tasks through obsidian-cli.

In plain words
What is it for?
Finding the active vault, reading or editing Markdown notes, and automating work with Obsidian files.
Why use it?
It provides scriptable access to notes while respecting that people may have several vaults in different locations.

Skill for Claude CodeCodex

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

Good fit Finding the active vault, reading or editing Markdown notes, and automating work…

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Install with agentmods
npx agentmods add skills/seanhogg/builderforce.ai/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 SeanHogg/Builderforce.ai --skill obsidian
Clone the repo
git clone --depth 1 https://github.com/SeanHogg/Builderforce.ai

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/seanhogg/builderforce.ai/obsidian.svg)](https://agentmods.dev/skills/seanhogg/builderforce.ai/obsidian)
Your own site
<a href="https://agentmods.dev/skills/seanhogg/builderforce.ai/obsidian"><img src="https://agentmods.dev/badge/skills/seanhogg/builderforce.ai/obsidian.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 650 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 91% copy Near-identical to another mod 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 $0.00022 $0.00650
Opus 5 $0.00011 $0.00325
Sonnet 5 $0.00004 $0.00130
Haiku 4.5 $0.00002 $0.00065

Measured 6d ago against content hash 0df2696e66e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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.

Origin

This is a copy

91% identical to obsidian — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agent-runtime/skills/obsidian/SKILL.md · 84 lines

What it actually says

Obsidian

Obsidian vault = a normal folder on disk.

Vault structure (typical)

  • Notes: *.md (plain text Markdown; edit with any editor)
  • Config: .obsidian/ (workspace + plugin settings; usually don’t touch from scripts)
  • Canvases: *.canvas (JSON)
  • Attachments: whatever folder you chose in Obsidian settings (images/PDFs/etc.)

Find the active vault(s)

Obsidian desktop tracks vaults here (source of truth):

  • ~/Library/Application Support/obsidian/obsidian.json

obsidian-cli resolves vaults from that file; vault name is typically the folder name (path suffix).

Fast “what vault is active / where are the notes?”

  • If you’ve already set a default: obsidian-cli print-default --path-only
  • Otherwise, read ~/Library/Application Support/obsidian/obsidian.json and use the vault entry with "open": true.

Notes

  • Multiple vaults common (iCloud vs ~/Documents, work/personal, etc.). Don’t guess; read config.
  • Avoid writing hardcoded vault paths into scripts; prefer reading the config or using print-default.

obsidian-cli quick start

Pick a default vault (once):

  • obsidian-cli set-default "<vault-folder-name>"
  • obsidian-cli print-default / obsidian-cli print-default --path-only

Search

  • obsidian-cli search "query" (note names)
  • obsidian-cli search-content "query" (inside notes; shows snippets + lines)

Create

  • obsidian-cli create "Folder/New note" --content "..." --open
  • Requires Obsidian URI handler (obsidian://…) working (Obsidian installed).
  • Avoid creating notes under “hidden” dot-folders (e.g. .something/...) via URI; Obsidian may refuse.

Move/rename (safe refactor)

  • obsidian-cli move "old/path/note" "new/path/note"
  • Updates [[wikilinks]] and common Markdown links across the vault (this is the main win vs mv).

Delete

  • obsidian-cli delete "path/note"

Prefer direct edits when appropriate: open the .md file and change it; Obsidian will pick it up.

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 · 84 lines · 22 tokens per session scan A 0df2696e66e5

Subscribe to this mod's changes

obsidian is a skill published in the GitHub repository SeanHogg/Builderforce.ai (5 stars, last pushed today), licensed MIT. It adds 22 tokens to every session and 650 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to obsidian, differing in 6 lines, and is treated as a copy.