claude-obsidian is a local knowledge system that turns source material into linked, source-cited Markdown notes in an Obsidian vault for use with Claude Code and compatible agent hosts. People use it to capture research, retrieve evidence-grounded answers, maintain knowledge, and map connections while retaining ownership of their files. The catalogue entries provide workflows and extensions for operating this knowledge system.
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 AgriciDaniel/claude-obsidian --skill obsidian-basesgit clone --depth 1 https://github.com/AgriciDaniel/claude-obsidianWrote 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/agricidaniel/claude-obsidian/obsidian-bases)<a href="https://agentmods.dev/skills/agricidaniel/claude-obsidian/obsidian-bases"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-obsidian/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/agricidaniel/claude-obsidian/obsidian-bases"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-obsidian/obsidian-bases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- 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 | $0.00075 | $0.01788 |
| Opus 5.5 | $0.00030 | $0.00715 |
| Sonnet 5.5 | $0.00015 | $0.00358 |
| Haiku 4.5 | $0.00007 | $0.00179 |
Grade A, and why
obsidian-bases scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Obsidian Bases
Use this as a compact workflow and fallback syntax reference. Prefer a
separately installed kepano/obsidian-skills obsidian-bases skill, then the
current official Bases syntax, for
detailed or version-sensitive fields and functions.
Answer design and syntax questions read-only. For a requested .base edit,
resolve the user vault and use one inspected transaction; never write the file
directly.
Resolve the installed product root from this skill's own location, not from the vault or current working directory:
PRODUCT_ROOT=/absolute/path/to/installed/claude-obsidian
CORE="$PRODUCT_ROOT/scripts/claude-obsidian.py"
test -f "$CORE"
Every ../wiki/references/ link in this file resolves the same way, relative
to this skill's own directory under $PRODUCT_ROOT, never relative to the
selected vault's wiki/ directory.
Workflow
-
Inspect representative note properties and any existing
.basefile. -
Define the smallest filter that selects the intended notes.
-
Add formulas only for values that must be computed.
-
Choose views and display order. Do not assume a view type or option is supported by the user's Obsidian version or installed plugins.
-
Validate YAML, expression quoting, property names, formula references, and null handling.
-
Preview the complete file and expected result set before a mutation.
-
If an edit was requested, read operation-transactions.md, keep the
.basefile underwiki/, and build oneclaude-obsidian.transaction.v1bundle withoperation_type: base. Inspect it, then setAPPROVAL_SHA256to the returnedapproval_sha256only after review and apply once:python3 "$CORE" transaction inspect "$BUNDLE" --vault "$VAULT" python3 "$CORE" transaction apply "$BUNDLE" --vault "$VAULT" \ --approved-plan-sha256 "$APPROVAL_SHA256" -
Record static validation separately from native Obsidian rendering. Follow the conformance procedure when application behavior cannot be verified locally. Never label unobserved output as tested.
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.
- 5d ago Changed · +62 lines · +6 tokens per session 3cd5676434bc
- 1mo ago Changed · +4 lines 3cdfbd83629c
- 1mo ago First seen · 143 lines · 69 tokens per session scan A 58828855d8b4
obsidian-bases is a skill published in the GitHub repository AgriciDaniel/claude-obsidian (15,864 stars, last pushed yesterday), licensed MIT. It adds 75 tokens to every session and 1,788 once invoked, about $0.0003 per session on Opus 5.5. 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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brain-onboard
An onboarding workflow that helps another person create and use their own private knowledge store, sometimes called a second brain. It gathers their information with consent, saves it in their own workspace, and demonstrates a first useful result.
memory-tidy
Tidy an agent's always-loaded memory index (MEMORY.md) on macOS or Linux: trim long lines, move closed entries to an archive, fold domains into hub files, restore dropped pins and add pointers for orphan memory files. Use when the index is over budget or has orphans. Triggers: /memory-tidy, /mt, tidy memory.
claudeai-sync
Pull new and changed claude.ai web conversations into an Obsidian vault, extract artifacts as first-class notes, concept-link them, and refresh the RAG index and dashboard. Idempotent: curated notes are never overwritten. Triggers: "/claudeai-sync", "pull claude.ai", "grab new claude.ai chats".
mine-channel
Mine any Telegram channel or chat for signal in one command: incremental zero-token scrape, deterministic detector shortlist, LLM judge for what is genuinely valuable to this owner, then linked vault notes, a database row, a map-of-content entry and reindex. Triggers: "/mine-channel ", "alpha from ".