obsidian-bases

obsidian-bases is a skill for Claude Code, Codex from allenhutchison/obsidian-gemini. It costs 43 tokens per session (2,521 once invoked), scanned A, original, MIT.

A configuration skill for Obsidian Bases, which are database-like views of notes and their properties. Bases can show notes as tables, cards, lists, or maps and can filter, sort, and summarize them.

In plain words
What is it for?
It helps create note databases, configure views, add filters and formulas, and display selected note properties in tables, cards, lists, or maps.
Why use it?
It makes structured information in Markdown notes easier to browse and manage without moving that data into a separate database. Filters and formulas can show only the records or values you need.

Skill for Claude CodeCodex

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

Good fit It helps create note databases, configure views, add filters and formulas, and display selected note properties in tables, cards, lists, or maps.

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Install with agentmods
npx agentmods add skills/allenhutchison/obsidian-gemini/obsidian-bases
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 allenhutchison/obsidian-gemini --skill obsidian-bases
Clone the repo
git clone --depth 1 https://github.com/allenhutchison/obsidian-gemini

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-bases

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/allenhutchison/obsidian-gemini/obsidian-bases"><img src="https://agentmods.dev/badge/skills/allenhutchison/obsidian-gemini/obsidian-bases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,521 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00043 $0.02521
Opus 5 $0.00022 $0.01260
Sonnet 5 $0.00009 $0.00504
Haiku 4.5 $0.00004 $0.00252

Measured 11d ago against content hash ea03412b2f20, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

obsidian-bases 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.

prompts/bundled-skills/obsidian-bases/SKILL.md · 336 lines

How it starts

The opening of the file, as written. The whole thing — 336 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Obsidian Bases

Bases is a core Obsidian plugin that creates database-like views of notes. A base can display, edit, sort, and filter files and their properties using table, cards, list, or map views.

All data lives in local Markdown files and their properties. Views are described by Bases syntax (YAML), saved as .base files or embedded in code blocks.

Creating a Base

As a file: Command palette → Bases: Create new base, or right-click a folder → New base.

Embedded in a note: Use a base code block:

```base
filters:
  and:
    - file.hasTag("example")
views:
  - type: table
    name: Table
```

Embed an existing base: ![[File.base]] or ![[File.base#ViewName]].

Important: Embedded base code blocks only render in Reading view or Live Preview mode. They appear as raw YAML in Source mode. After creating an embedded base, let the user know they may need to switch to Reading view to see it rendered.

Bases Syntax (YAML)

A base file has these top-level sections, all optional:

filters: # Global filters applied to all views
formulas: # Calculated properties
properties: # Display configuration (e.g., column headers)
summaries: # Custom summary formulas
views: # One or more view definitions

Filters

By default a base includes every file in the vault. Filters narrow the dataset.

Filters can be applied globally (all views) or per-view. Both use the same syntax and are combined with AND when both are present.

filters:
  and:
    - file.hasTag("project")
    - 'status != "done"'
  or:
    - file.inFolder("Work")
    - file.inFolder("Personal")
  not:
    - file.hasTag("archived")

Filter statements are strings that evaluate to true/false using comparison operators or functions.

Formulas

Calculated properties defined in the base:

formulas:
  total_cost: 'price * quantity'
  formatted_price: 'if(price, "$" + price.toFixed(2), "")'
  deadline: 'start_date + "2w"'
  overdue: 'if(due_date < now() && status != "Done", "Overdue", "")'

Read the full file on GitHub · 336 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. 11d ago First seen · 336 lines · 43 tokens per session scan A ea03412b2f20

Subscribe to this mod's changes

obsidian-bases is a skill published in the GitHub repository allenhutchison/obsidian-gemini (524 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 2,521 once invoked, about $0.0002 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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