obsidian-bases

obsidian-bases is a skill for Claude Code, Codex from jxoesneon/Ciel. It costs 38 tokens per session (1,161 once invoked), scanned A, original, Apache-2.0.

A guide to Obsidian Bases, YAML files that create database-like views over notes. It supports filters, formulas, summaries, and table, card, list, or map layouts.

In plain words
What is it for?
Creating filtered note views, calculating properties, grouping or summarizing notes, and displaying them as tables, cards, lists, or maps.
Why use it?
It turns a collection of notes into structured views without moving the notes into a separate database and helps catch invalid YAML or missing references.

Skill for Claude CodeCodex

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

Good fit Creating filtered note views, calculating properties, grouping or summarizing notes, and displaying them as tables, cards, lists, or maps.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jxoesneon/ciel/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 jxoesneon/Ciel --skill obsidian-bases
Clone the repo
git clone --depth 1 https://github.com/jxoesneon/Ciel

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/jxoesneon/ciel/obsidian-bases/github.svg)](https://agentmods.dev/skills/jxoesneon/ciel/obsidian-bases)
Your own site
<a href="https://agentmods.dev/skills/jxoesneon/ciel/obsidian-bases"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/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/jxoesneon/ciel/obsidian-bases"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/obsidian-bases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,161 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 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 $0.00038 $0.01161
Opus 5 $0.00019 $0.00580
Sonnet 5 $0.00008 $0.00232
Haiku 4.5 $0.00004 $0.00116

Measured 8d ago against content hash 8be1e6e980fd, 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 8d 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.

skills/obsidian-bases/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CIEL ADAPTATION: Obsidian Bases

Create and edit Obsidian Bases (.base files) — YAML-defined database views over vault notes. Scope notes via filters, compute values with formulas, aggregate with summaries, and render as table, cards, list, or map views.

Workflow

  1. Create a .base file with valid YAML
  2. Scope: Add filters (global and/or per-view) to select notes by tag, folder, property, or date
  3. Formulas (optional): Define computed properties in formulas
  4. Views: Add one or more views with order listing displayed properties
  5. Validate: Confirm valid YAML, all referenced properties/formulas exist, quoting is correct
  6. Test: Open in Obsidian; a YAML error usually means a quoting issue

Schema

  • filters — global filter (string or and/or/not object); applies to ALL views
  • formulasname: 'expression' computed properties
  • propertiesdisplayName overrides for note/file/formula properties
  • summaries — custom summary formulas: name: 'values.mean().round(3)'
  • views — array of view configs (type, name, limit, groupBy, filters, order, summaries)

Filter Syntax

  • Single: filters: 'status == "done"'
  • and / or / not — recursive objects of filter strings
  • Operators: ==, !=, >, <, >=, <=, &&, ||, !
  • File helpers: file.hasTag("x"), file.hasLink("x"), file.inFolder("x")

Properties

  • Note: frontmatter values (author or note.author)
  • File: file.name, file.path, file.mtime, file.tags, file.links, file.backlinks, etc.
  • Formula: formula.my_formula
  • this: base file in main content, embedding file when embedded, active file in sidebar

Formulas

  • Arithmetic: total: "price * quantity"; Conditional: status_icon: 'if(done, "✅", "⏳")'
  • Date math: days_old: '(now() - file.ctime).days' — subtracting dates returns a Duration, NOT a number; access .days/.hours first
  • Guard nulls: 'if(due_date, (date(due_date) - today()).days, "")'
  • Key functions: date(), now(), today(), if(), duration(), file(), link()

Read the full file on GitHub · 80 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. 8d ago First seen · 80 lines · 38 tokens per session scan A 8be1e6e980fd

Subscribe to this mod's changes

obsidian-bases is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 4d ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,161 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 2026-09-03.

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