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.
npx skills add allenhutchison/obsidian-gemini --skill obsidian-propertiesgit clone --depth 1 https://github.com/allenhutchison/obsidian-geminiWrote 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.
[](https://agentmods.dev/skills/allenhutchison/obsidian-gemini/obsidian-properties)<a href="https://agentmods.dev/skills/allenhutchison/obsidian-gemini/obsidian-properties"><img src="https://agentmods.dev/badge/skills/allenhutchison/obsidian-gemini/obsidian-properties/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.
<a href="https://agentmods.dev/skills/allenhutchison/obsidian-gemini/obsidian-properties"><img src="https://agentmods.dev/badge/skills/allenhutchison/obsidian-gemini/obsidian-properties.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00050 | $0.01158 |
| Opus 5 | $0.00025 | $0.00579 |
| Sonnet 5 | $0.00010 | $0.00232 |
| Haiku 4.5 | $0.00005 | $0.00116 |
Grade A, and why
obsidian-properties 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Obsidian Properties
Properties are structured metadata stored as YAML frontmatter at the top of notes. They enable organization, search, filtering, and integration with features like Bases, Templates, and Search.
Always use the update_frontmatter tool for property changes — it handles YAML formatting safely via Obsidian's API.
Property Format
Properties are YAML between --- delimiters at the very start of a file:
---
title: My Note
tags:
- journal
- personal
date: 2024-08-21
---
- Each property name must be unique within a note
- Names are separated from values by a colon followed by a space
- Order of properties doesn't matter
Property Types
Once a type is assigned to a property name, all notes in the vault share that type.
Text
Single line of text. No markdown rendering. Hashtags do NOT create tags.
Internal links must be quoted:
title: A New Hope
link: '[[Episode IV]]'
url: https://www.example.com
List
Multiple values, each on its own line with - :
cast:
- Mark Hamill
- Harrison Ford
- Carrie Fisher
links:
- '[[Link]]'
- '[[Link2]]'
Internal links in lists must also be quoted.
Number
Literal integers or decimals only — no expressions or operators:
year: 1977
pie: 3.14
Checkbox
Boolean true or false. Renders as a checkbox in Live Preview:
favorite: true
reply: false
Date
Format: YYYY-MM-DD
date: 2024-08-21
With the Daily Notes plugin enabled, date properties function as internal links to daily notes.
Date & Time
Format: YYYY-MM-DDTHH:mm:ss
time: 2024-08-21T10:30:00
Tags
Special type used exclusively by the tags property. Cannot be assigned to other property names. Formatted as a list:
tags:
- journal
- personal
- draft
Default Properties
| Property | Type | Description |
|---|---|---|
tags |
List | Note tags (also recognized inline with #tag) |
aliases |
List | Alternative names for the note (used in link resolution) |
cssclasses |
List | Apply CSS snippets to style individual notes |
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.
- 11d ago First seen · 178 lines · 50 tokens per session scan A 4a6159569daf
obsidian-properties is a skill published in the GitHub repository allenhutchison/obsidian-gemini (524 stars, last pushed today), licensed MIT. It adds 50 tokens to every session and 1,158 once invoked, about $0.0003 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.
Other skills, from other repositories
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
local-ai-agents
Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
insight-error-page
Write or audit an insight-kind error page for the Next.js dev overlay. Use when creating a new errors/ .mdx page, auditing an existing one, or checking that a page matches the framework fix cards. Covers page structure, title alignment, FixCard cards with Copy prompt button, code snippets, terminology verification…
next-cache-components-optimizer
Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…
next-partial-prefetching-adoption
Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…