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 eliransu/digital-brain --skill obsidian-basesgit clone --depth 1 https://github.com/eliransu/digital-brainWrote 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/eliransu/digital-brain/obsidian-bases)<a href="https://agentmods.dev/skills/eliransu/digital-brain/obsidian-bases"><img src="https://agentmods.dev/badge/skills/eliransu/digital-brain/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.
<a href="https://agentmods.dev/skills/eliransu/digital-brain/obsidian-bases"><img src="https://agentmods.dev/badge/skills/eliransu/digital-brain/obsidian-bases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00082 | $0.01654 |
| Opus 5 | $0.00041 | $0.00827 |
| Sonnet 5 | $0.00016 | $0.00331 |
| Haiku 4.5 | $0.00008 | $0.00165 |
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 9d 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.
This is a copy
100% identical to obsidian-bases — 0 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.
How it starts
The opening of the file, as written. The whole thing — 294 lines — stays where its author put it; the contents beside it link to each section on GitHub.
obsidian-bases: Obsidian's Database Layer
Obsidian Bases (launched 2025) turns vault notes into queryable, dynamic views. Tables, cards, lists, maps. Defined in .base files. No plugin required; it is a core Obsidian feature.
Authoritative reference: If the kepano/obsidian-skills plugin is installed, prefer its canonical obsidian-bases skill. Otherwise, use the reference below. Official docs: https://help.obsidian.md/bases/syntax
File Format
.base files contain valid YAML. The root keys are filters, formulas, properties, summaries, and views.
# Global filters: apply to ALL views
filters:
and:
- file.hasTag("wiki")
- 'status != "archived"'
# Computed properties
formulas:
age_days: '(now() - file.ctime).days.round(0)'
status_icon: 'if(status == "mature", "✅", "🔄")'
# Display name overrides for properties panel
properties:
status:
displayName: "Status"
formula.age_days:
displayName: "Age (days)"
# One or more views
views:
- type: table
name: "All Pages"
order:
- file.name
- type
- status
- updated
- formula.age_days
Filters
Filters select which notes appear. Applied globally or per-view.
# Single string filter
filters: 'status == "current"'
# AND: all must be true
filters:
and:
- 'status != "archived"'
- file.hasTag("wiki")
# OR: any can be true
filters:
or:
- file.hasTag("concept")
- file.hasTag("entity")
# NOT: exclude matches
filters:
not:
- file.inFolder("wiki/meta")
# Nested
filters:
and:
- file.inFolder("wiki/")
- or:
- 'type == "concept"'
- 'type == "entity"'
Filter operators
== != > < >= <=
Useful filter functions
| Function | Example |
|---|---|
file.hasTag("x") |
Notes with tag x |
file.inFolder("path/") |
Notes in folder |
file.hasLink("Note") |
Notes linking to Note |
Properties
Three types:
- Note properties: from frontmatter:
status,type,updated - File properties: metadata:
file.name,file.mtime,file.size,file.ctime,file.tags,file.folder - Formula properties: computed:
formula.age_days
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.
- 9d ago First seen · 294 lines · 82 tokens per session scan A 5ed681d46f09
obsidian-bases is a skill published in the GitHub repository eliransu/digital-brain (1 stars, last pushed 3mo ago), licensed MIT. It adds 82 tokens to every session and 1,654 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to obsidian-bases, differing in 0 lines, and is treated as a copy.
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