Building Claude Skills That Connect to Obsidian: A Developer's Field Guide

If you run Claude Code and use Obsidian as your knowledge base, you've probably hit the same wall I did: your AI agent can't read your vault. Your notes are sitting right there and Claude has no idea they exist.

We solved this by building a suite of Claude skills — installable tool bundles that give Claude native Obsidian access. Here's how they work architecturally, and what we learned building them.

What a Claude Skill Is

A Claude skill is a portable prompt + tool bundle that runs inside Claude Code. When installed, it extends what Claude can do in a specific domain. You invoke it with a slash command (e.g. /obsidian-cli) and Claude executes the defined workflow.

Skills are distributed via Claw Mart, a marketplace for Claude skills. Installation is one command.

The key architectural insight: skills are composable. You can chain them. An Obsidian CLI skill can call a Defuddle skill to clip a webpage, then write the result to your vault. The LLM orchestrates, the skills provide the tools.

The Obsidian Integration Problem

Obsidian stores everything as plain Markdown files in a local vault directory. That's the good news — there's no database, no API, no authentication layer.

The challenge: Obsidian has its own syntax extensions on top of standard Markdown:

[[wikilinks]] — internal links that become broken if malformed
![[embeds]] — file embeds with different rules than standard Markdown images
Callouts — > [!NOTE] blocks that require exact formatting
Frontmatter — YAML properties block that Obsidian parses for metadata
.canvas files — JSON format for visual maps
.base files — JSON format for database views (new in Obsidian 1.8+)

When you ask a vanilla Claude to write an Obsidian note, it gets these wrong ~60% of the time. Wikilinks get bracket-escaped, callout syntax breaks, frontmatter gets corrupted.

The skills fix this by injecting precise syntax rules and validated templates at invocation time.

Architecture: Five Skills, One Cohesive Suite

1. Obsidian CLI — Vault Read/Write

The foundation skill. Gives Claude direct filesystem access to your vault with Obsidian-aware operations.

What it enables:

Read any note by title or path
Create/update notes with correct Obsidian syntax
Search vault contents (full-text, by tag, by frontmatter property)
Manage attachments
Navigate the folder hierarchy

How it works:
The skill uses Claude Code's native file tools (Read, Write, Glob, Grep) scoped to your vault directory. No external process, no plugin required. The skill prompt tells Claude where your vault lives and how to navigate it safely.

# Example invocation
/obsidian-cli create a new note in my Projects folder summarizing today's standup

Claude reads your existing Project template (if you have one), creates the note with correct frontmatter, and uses [[wikilinks]] to link related notes it finds in your vault.

Install: shopclawmart.com/listings/obsidian-cli-control-your-vault-from-claude-70417317

2. Obsidian Markdown — Correct Syntax Every Time

A syntax-enforcement skill. No file operations — purely about getting Obsidian Markdown right.

The problem it solves:
Claude's training data contains standard Markdown but Obsidian's extensions aren't universally represented. The LLM guesses at callout syntax, forgets that wikilinks don't use relative paths, and frequently breaks frontmatter YAML.

What the skill injects:

Complete wikilink reference: [[Note Title]], [[Note Title|Display Text]], [[Note Title#Heading]]
All callout types with correct syntax: [!NOTE], [!WARNING], [!QUOTE], etc.
Frontmatter rules: valid property types, date formats, tag syntax
Embed syntax for images, PDFs, other notes, and headings
Mermaid diagram support (Obsidian renders these natively)

Install: shopclawmart.com/listings/obsidian-markdown-perfect-obsidian-syntax-every-time-a3bc9293

3. Obsidian Bases — AI-Built Database Views

Obsidian 1.8 shipped Bases — a native database/spreadsheet layer over your vault. It's powerful but the .base file format is JSON-based and requires understanding the query model.

What the skill does:
You describe the view you want in plain English. Claude generates a valid .base file and writes it to your vault.

# Example
/obsidian-bases create a table showing all notes tagged #project,
with columns for status, due date, and last modified

Output: a .base file with the correct JSON schema, filter expressions, column definitions, and summary rows. Open it in Obsidian and your database view is live.

Technical note:
The skill includes the full Bases JSON schema (field types, operators, formula syntax) in its context. This is the part that's hard to get right from memory — the skill makes it deterministic.

Install: shopclawmart.com/listings/obsidian-bases-database-views-without-writing-a-single-query-bfece862

4. JSON Canvas — Visual Maps in Your Vault

Obsidian's Canvas feature uses .canvas files — a JSON format for visual node/edge graphs. Building these by hand is tedious. Building them via Claude without a schema reference produces invalid files.

What the skill does:
You describe a concept, diagram, or relationship map. Claude generates a valid .canvas file and saves it to your vault.

# Example
/json-canvas create a canvas showing the architecture of my trading system:
data ingestion → signal generation → risk management → execution → monitoring

Output: a .canvas file with positioned nodes, colored groups, labeled edges, and any relevant wikilinks to notes in your vault.

Install: shopclawmart.com/listings/json-canvas-visualize-any-idea-as-an-obsidian-canvas-626fa65f

5. Defuddle — Web → Clean Markdown

The research ingestion skill. Takes any URL, strips navigation/ads/boilerplate, and produces clean Markdown ready for your vault.

Built on: Defuddle (by Kepano, the Obsidian creator). The skill wraps the CLI with Obsidian-specific output formatting.

# Example
/defuddle https://some-article-url — save to my Reading/ folder with
source URL in frontmatter

Output: a clean Markdown file in your vault with frontmatter containing the source URL, author, date, and your tags. Ready to link from other notes.

Install: shopclawmart.com/listings/defuddle-turn-any-web-page-into-clean-markdown-927bcb66

Composing Skills Together

The real power is composition. Here's a real workflow I run:

1. /defuddle [URL]           → clips article to raw/
2. /obsidian-cli             → summarize it and create a wiki page
3. /obsidian-markdown        → ensure all syntax is correct
4. /json-canvas              → create a concept map linking it to related ideas

Each skill handles its domain. Claude orchestrates. Your vault gets richer automatically.

Distribution Model

All five skills are on Claw Mart: shopclawmart.com

Claw Mart is a marketplace for Claude skills. Skills are $3.99–$4.99 one-time. After purchase, you get an install command and the skill is available in any Claude Code session.

The marketplace is also open to other skill authors — if you build something useful, you can distribute it there.

What's Next

We're building more Obsidian integrations:

Daily Note automation — automatic end-of-session summaries written to your daily note
Spaced repetition — Claude generates flashcards from your notes, tracks what to review
Cross-vault search — when you have multiple Obsidian vaults (personal + work + projects)

If you're an Obsidian power user and there's a workflow you wish Claude could handle, reply here or open an issue on our roadmap. We build based on real use cases.