Obsidian markdown

Skill AgriciDaniel/claude-obsidian/skills/obsidian-markdown

Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude reads, links, and files it into one connected knowledge graph of plain Markdown you own. AI note-taking, personal knowledge management (PKM), and an open-source Notion alternative. Based on Karpathy's LLM Wiki pattern.

Install

npx -y skills add AgriciDaniel/claude-obsidian --skill obsidian-markdown

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

What its author says it does

Copied from the file, not written here

Explain, draft, or validate Obsidian Flavored Markdown syntax: properties, wikilinks, embeds, callouts, tags, comments, highlights, block references, math, and Mermaid. Use when the user explicitly requests Obsidian note formatting or syntax help, not for general Markdown or broad vault operations.

SKILL.md

4.2 KB, as published. Nobody here has run it

Obsidian Flavored Markdown

Use this as a compact fallback for Obsidian-specific syntax. Prefer a separately installed kepano/obsidian-skills obsidian-markdown skill when available, then current Obsidian Help, for detailed or version-sensitive questions.

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"

Answer syntax questions read-only. If the user requests a vault edit, draft the complete note, read operation-transactions.md, and build one claude-obsidian.transaction.v1 bundle with operation_type: markdown and only wiki/ targets. Inspect it, then set APPROVAL_SHA256 to the returned approval_sha256 after review and apply it through the same vault-bound plan. A canonical page create or removal includes an active index or MOC update in that bundle; update the overview only when its stable high-level synthesis changed:

python3 "$CORE" transaction inspect "$BUNDLE" --vault "$VAULT"
python3 "$CORE" transaction apply "$BUNDLE" --vault "$VAULT" \
  --approved-plan-sha256 "$APPROVAL_SHA256"

Never write a note directly.

Properties

Use flat YAML properties and YYYY-MM-DD dates. Quote wikilinks inside YAML.

---
type: concept
title: "Contextual Retrieval"
created: 2026-07-11
updated: 2026-07-11
status: developing
tags:
  - retrieval
  - ai/knowledge
aliases:
  - Context-aware retrieval
related:
  - "[[Retrieval]]"
sources:
  - "[[Anthropic Contextual Retrieval]]"
---

Do not nest objects in generated wiki properties. Use block lists rather than inline YAML arrays. Quote numeric-only tag values, for example - "2026", so YAML parsers preserve them as tags instead of numbers. Keep unknown existing properties unless the requested edit changes them.

Wikilinks and embeds

[[Note Name]]
[[Note Name|Display text]]
[[Note Name#Heading]]
[[Note Name#^block-id]]
[[Folder/Note Name]]

This paragraph is addressable. ^evidence-block

![[Note Name#Summary]]
![[diagram.png|480]]
![[paper.pdf#page=3]]

Match the target filename exactly. Use a vault-relative folder path when a basename is ambiguous. Use standard Markdown links for external URLs; use wikilinks for this vault's notes.

Callouts

> [!note]
> Supporting context.

> [!warning] Review required
> This claim has contradictory evidence.

> [!question]- Open question
> What evidence would resolve this?

- starts collapsed and + starts expanded. Common built-in types include note, abstract, info, todo, tip, success, question, warning, failure, danger, bug, example, and quote. Preserve custom vault callout types rather than rewriting them.

Other Obsidian syntax

#inline-tag #nested/tag

==Highlighted text==

Visible text %%hidden comment%%

Inline math: $E = mc^2$

$$
\int_0^1 x^2\,dx = \frac{1}{3}
$$

```mermaid
flowchart LR
  Source --> Claim
```

Standard CommonMark/GFM headings, lists, tasks, tables, code fences, and footnotes remain valid. Avoid HTML when native Markdown is sufficient.

Validate a drafted note

Parse the YAML boundary and keep property types consistent.
Verify every internal target, heading, and block reference that can be checked locally; never fabricate a target to make a link look complete.
Keep evidence wording distinct from inference and preserve source locators.
Ensure code fences and callout quoting are balanced.
Run deterministic wiki lint after a requested mutation and report remaining findings without silently repairing them.

For source-cited pages, also follow provenance.md. Report the transaction operation ID and exact changed paths after an applied edit.