Fix Claude Code skill discovery by standardizing skills/ layout

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李争欣
2026-01-09 11:14:50 +08:00
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---
name: json-canvas
description: Create and edit JSON Canvas files (.canvas) with nodes, edges, groups, and connections. Use when working with .canvas files, creating visual canvases, mind maps, flowcharts, or when the user mentions Canvas files in Obsidian.
---
# JSON Canvas Skill
This skill enables Claude Code to create and edit valid JSON Canvas files (`.canvas`) used in Obsidian and other applications.
## Overview
JSON Canvas is an open file format for infinite canvas data. Canvas files use the `.canvas` extension and contain valid JSON following the [JSON Canvas Spec 1.0](https://jsoncanvas.org/spec/1.0/).
## File Structure
A canvas file contains two top-level arrays:
```json
{
"nodes": [],
"edges": []
}
```
- `nodes` (optional): Array of node objects
- `edges` (optional): Array of edge objects connecting nodes
## Nodes
Nodes are objects placed on the canvas. There are four node types:
- `text` - Text content with Markdown
- `file` - Reference to files/attachments
- `link` - External URL
- `group` - Visual container for other nodes
### Z-Index Ordering
Nodes are ordered by z-index in the array:
- First node = bottom layer (displayed below others)
- Last node = top layer (displayed above others)
### Generic Node Attributes
All nodes share these attributes:
| Attribute | Required | Type | Description |
|-----------|----------|------|-------------|
| `id` | Yes | string | Unique identifier for the node |
| `type` | Yes | string | Node type: `text`, `file`, `link`, or `group` |
| `x` | Yes | integer | X position in pixels |
| `y` | Yes | integer | Y position in pixels |
| `width` | Yes | integer | Width in pixels |
| `height` | Yes | integer | Height in pixels |
| `color` | No | canvasColor | Node color (see Color section) |
### Text Nodes
Text nodes contain Markdown content.
```json
{
"id": "6f0ad84f44ce9c17",
"type": "text",
"x": 0,
"y": 0,
"width": 400,
"height": 200,
"text": "# Hello World\n\nThis is **Markdown** content."
}
```
| Attribute | Required | Type | Description |
|-----------|----------|------|-------------|
| `text` | Yes | string | Plain text with Markdown syntax |
### File Nodes
File nodes reference files or attachments (images, videos, PDFs, notes, etc.).
```json
{
"id": "a1b2c3d4e5f67890",
"type": "file",
"x": 500,
"y": 0,
"width": 400,
"height": 300,
"file": "Attachments/diagram.png"
}
```
```json
{
"id": "b2c3d4e5f6789012",
"type": "file",
"x": 500,
"y": 400,
"width": 400,
"height": 300,
"file": "Notes/Project Overview.md",
"subpath": "#Implementation"
}
```
| Attribute | Required | Type | Description |
|-----------|----------|------|-------------|
| `file` | Yes | string | Path to file within the system |
| `subpath` | No | string | Link to heading or block (starts with `#`) |
### Link Nodes
Link nodes display external URLs.
```json
{
"id": "c3d4e5f678901234",
"type": "link",
"x": 1000,
"y": 0,
"width": 400,
"height": 200,
"url": "https://obsidian.md"
}
```
| Attribute | Required | Type | Description |
|-----------|----------|------|-------------|
| `url` | Yes | string | External URL |
### Group Nodes
Group nodes are visual containers for organizing other nodes.
```json
{
"id": "d4e5f6789012345a",
"type": "group",
"x": -50,
"y": -50,
"width": 1000,
"height": 600,
"label": "Project Overview",
"color": "4"
}
```
```json
{
"id": "e5f67890123456ab",
"type": "group",
"x": 0,
"y": 700,
"width": 800,
"height": 500,
"label": "Resources",
"background": "Attachments/background.png",
"backgroundStyle": "cover"
}
```
| Attribute | Required | Type | Description |
|-----------|----------|------|-------------|
| `label` | No | string | Text label for the group |
| `background` | No | string | Path to background image |
| `backgroundStyle` | No | string | Background rendering style |
#### Background Styles
| Value | Description |
|-------|-------------|
| `cover` | Fills entire width and height of node |
| `ratio` | Maintains aspect ratio of background image |
| `repeat` | Repeats image as pattern in both directions |
## Edges
Edges are lines connecting nodes.
```json
{
"id": "f67890123456789a",
"fromNode": "6f0ad84f44ce9c17",
"toNode": "a1b2c3d4e5f67890"
}
```
```json
{
"id": "0123456789abcdef",
"fromNode": "6f0ad84f44ce9c17",
"fromSide": "right",
"fromEnd": "none",
"toNode": "b2c3d4e5f6789012",
"toSide": "left",
"toEnd": "arrow",
"color": "1",
"label": "leads to"
}
```
| Attribute | Required | Type | Default | Description |
|-----------|----------|------|---------|-------------|
| `id` | Yes | string | - | Unique identifier for the edge |
| `fromNode` | Yes | string | - | Node ID where connection starts |
| `fromSide` | No | string | - | Side where edge starts |
| `fromEnd` | No | string | `none` | Shape at edge start |
| `toNode` | Yes | string | - | Node ID where connection ends |
| `toSide` | No | string | - | Side where edge ends |
| `toEnd` | No | string | `arrow` | Shape at edge end |
| `color` | No | canvasColor | - | Line color |
| `label` | No | string | - | Text label for the edge |
### Side Values
| Value | Description |
|-------|-------------|
| `top` | Top edge of node |
| `right` | Right edge of node |
| `bottom` | Bottom edge of node |
| `left` | Left edge of node |
### End Shapes
| Value | Description |
|-------|-------------|
| `none` | No endpoint shape |
| `arrow` | Arrow endpoint |
## Colors
The `canvasColor` type can be specified in two ways:
### Hex Colors
```json
{
"color": "#FF0000"
}
```
### Preset Colors
```json
{
"color": "1"
}
```
| Preset | Color |
|--------|-------|
| `"1"` | Red |
| `"2"` | Orange |
| `"3"` | Yellow |
| `"4"` | Green |
| `"5"` | Cyan |
| `"6"` | Purple |
Note: Specific color values for presets are intentionally undefined, allowing applications to use their own brand colors.
## Complete Examples
### Simple Canvas with Text and Connections
```json
{
"nodes": [
{
"id": "8a9b0c1d2e3f4a5b",
"type": "text",
"x": 0,
"y": 0,
"width": 300,
"height": 150,
"text": "# Main Idea\n\nThis is the central concept."
},
{
"id": "1a2b3c4d5e6f7a8b",
"type": "text",
"x": 400,
"y": -100,
"width": 250,
"height": 100,
"text": "## Supporting Point A\n\nDetails here."
},
{
"id": "2b3c4d5e6f7a8b9c",
"type": "text",
"x": 400,
"y": 100,
"width": 250,
"height": 100,
"text": "## Supporting Point B\n\nMore details."
}
],
"edges": [
{
"id": "3c4d5e6f7a8b9c0d",
"fromNode": "8a9b0c1d2e3f4a5b",
"fromSide": "right",
"toNode": "1a2b3c4d5e6f7a8b",
"toSide": "left"
},
{
"id": "4d5e6f7a8b9c0d1e",
"fromNode": "8a9b0c1d2e3f4a5b",
"fromSide": "right",
"toNode": "2b3c4d5e6f7a8b9c",
"toSide": "left"
}
]
}
```
### Project Board with Groups
```json
{
"nodes": [
{
"id": "5e6f7a8b9c0d1e2f",
"type": "group",
"x": 0,
"y": 0,
"width": 300,
"height": 500,
"label": "To Do",
"color": "1"
},
{
"id": "6f7a8b9c0d1e2f3a",
"type": "group",
"x": 350,
"y": 0,
"width": 300,
"height": 500,
"label": "In Progress",
"color": "3"
},
{
"id": "7a8b9c0d1e2f3a4b",
"type": "group",
"x": 700,
"y": 0,
"width": 300,
"height": 500,
"label": "Done",
"color": "4"
},
{
"id": "8b9c0d1e2f3a4b5c",
"type": "text",
"x": 20,
"y": 50,
"width": 260,
"height": 80,
"text": "## Task 1\n\nImplement feature X"
},
{
"id": "9c0d1e2f3a4b5c6d",
"type": "text",
"x": 370,
"y": 50,
"width": 260,
"height": 80,
"text": "## Task 2\n\nReview PR #123",
"color": "2"
},
{
"id": "0d1e2f3a4b5c6d7e",
"type": "text",
"x": 720,
"y": 50,
"width": 260,
"height": 80,
"text": "## Task 3\n\n~~Setup CI/CD~~"
}
],
"edges": []
}
```
### Research Canvas with Files and Links
```json
{
"nodes": [
{
"id": "1e2f3a4b5c6d7e8f",
"type": "text",
"x": 300,
"y": 200,
"width": 400,
"height": 200,
"text": "# Research Topic\n\n## Key Questions\n\n- How does X affect Y?\n- What are the implications?",
"color": "5"
},
{
"id": "2f3a4b5c6d7e8f9a",
"type": "file",
"x": 0,
"y": 0,
"width": 250,
"height": 150,
"file": "Literature/Paper A.pdf"
},
{
"id": "3a4b5c6d7e8f9a0b",
"type": "file",
"x": 0,
"y": 200,
"width": 250,
"height": 150,
"file": "Notes/Meeting Notes.md",
"subpath": "#Key Insights"
},
{
"id": "4b5c6d7e8f9a0b1c",
"type": "link",
"x": 0,
"y": 400,
"width": 250,
"height": 100,
"url": "https://example.com/research"
},
{
"id": "5c6d7e8f9a0b1c2d",
"type": "file",
"x": 750,
"y": 150,
"width": 300,
"height": 250,
"file": "Attachments/diagram.png"
}
],
"edges": [
{
"id": "6d7e8f9a0b1c2d3e",
"fromNode": "2f3a4b5c6d7e8f9a",
"fromSide": "right",
"toNode": "1e2f3a4b5c6d7e8f",
"toSide": "left",
"label": "supports"
},
{
"id": "7e8f9a0b1c2d3e4f",
"fromNode": "3a4b5c6d7e8f9a0b",
"fromSide": "right",
"toNode": "1e2f3a4b5c6d7e8f",
"toSide": "left",
"label": "informs"
},
{
"id": "8f9a0b1c2d3e4f5a",
"fromNode": "4b5c6d7e8f9a0b1c",
"fromSide": "right",
"toNode": "1e2f3a4b5c6d7e8f",
"toSide": "left",
"toEnd": "arrow",
"color": "6"
},
{
"id": "9a0b1c2d3e4f5a6b",
"fromNode": "1e2f3a4b5c6d7e8f",
"fromSide": "right",
"toNode": "5c6d7e8f9a0b1c2d",
"toSide": "left",
"label": "visualized by"
}
]
}
```
### Flowchart
```json
{
"nodes": [
{
"id": "a0b1c2d3e4f5a6b7",
"type": "text",
"x": 200,
"y": 0,
"width": 150,
"height": 60,
"text": "**Start**",
"color": "4"
},
{
"id": "b1c2d3e4f5a6b7c8",
"type": "text",
"x": 200,
"y": 100,
"width": 150,
"height": 60,
"text": "Step 1:\nGather data"
},
{
"id": "c2d3e4f5a6b7c8d9",
"type": "text",
"x": 200,
"y": 200,
"width": 150,
"height": 80,
"text": "**Decision**\n\nIs data valid?",
"color": "3"
},
{
"id": "d3e4f5a6b7c8d9e0",
"type": "text",
"x": 400,
"y": 200,
"width": 150,
"height": 60,
"text": "Process data"
},
{
"id": "e4f5a6b7c8d9e0f1",
"type": "text",
"x": 0,
"y": 200,
"width": 150,
"height": 60,
"text": "Request new data",
"color": "1"
},
{
"id": "f5a6b7c8d9e0f1a2",
"type": "text",
"x": 400,
"y": 320,
"width": 150,
"height": 60,
"text": "**End**",
"color": "4"
}
],
"edges": [
{
"id": "a6b7c8d9e0f1a2b3",
"fromNode": "a0b1c2d3e4f5a6b7",
"fromSide": "bottom",
"toNode": "b1c2d3e4f5a6b7c8",
"toSide": "top"
},
{
"id": "b7c8d9e0f1a2b3c4",
"fromNode": "b1c2d3e4f5a6b7c8",
"fromSide": "bottom",
"toNode": "c2d3e4f5a6b7c8d9",
"toSide": "top"
},
{
"id": "c8d9e0f1a2b3c4d5",
"fromNode": "c2d3e4f5a6b7c8d9",
"fromSide": "right",
"toNode": "d3e4f5a6b7c8d9e0",
"toSide": "left",
"label": "Yes",
"color": "4"
},
{
"id": "d9e0f1a2b3c4d5e6",
"fromNode": "c2d3e4f5a6b7c8d9",
"fromSide": "left",
"toNode": "e4f5a6b7c8d9e0f1",
"toSide": "right",
"label": "No",
"color": "1"
},
{
"id": "e0f1a2b3c4d5e6f7",
"fromNode": "e4f5a6b7c8d9e0f1",
"fromSide": "top",
"fromEnd": "none",
"toNode": "b1c2d3e4f5a6b7c8",
"toSide": "left",
"toEnd": "arrow"
},
{
"id": "f1a2b3c4d5e6f7a8",
"fromNode": "d3e4f5a6b7c8d9e0",
"fromSide": "bottom",
"toNode": "f5a6b7c8d9e0f1a2",
"toSide": "top"
}
]
}
```
## ID Generation
Node and edge IDs must be unique strings. Obsidian generates 16-character hexadecimal IDs:
```json
"id": "6f0ad84f44ce9c17"
"id": "a3b2c1d0e9f8g7h6"
"id": "1234567890abcdef"
```
This format is a 16-character lowercase hex string (64-bit random value).
## Layout Guidelines
### Positioning
- Coordinates can be negative (canvas extends infinitely)
- `x` increases to the right
- `y` increases downward
- Position refers to top-left corner of node
### Recommended Sizes
| Node Type | Suggested Width | Suggested Height |
|-----------|-----------------|------------------|
| Small text | 200-300 | 80-150 |
| Medium text | 300-450 | 150-300 |
| Large text | 400-600 | 300-500 |
| File preview | 300-500 | 200-400 |
| Link preview | 250-400 | 100-200 |
| Group | Varies | Varies |
### Spacing
- Leave 20-50px padding inside groups
- Space nodes 50-100px apart for readability
- Align nodes to grid (multiples of 10 or 20) for cleaner layouts
## Validation Rules
1. All `id` values must be unique across nodes and edges
2. `fromNode` and `toNode` must reference existing node IDs
3. Required fields must be present for each node type
4. `type` must be one of: `text`, `file`, `link`, `group`
5. `backgroundStyle` must be one of: `cover`, `ratio`, `repeat`
6. `fromSide`, `toSide` must be one of: `top`, `right`, `bottom`, `left`
7. `fromEnd`, `toEnd` must be one of: `none`, `arrow`
8. Color presets must be `"1"` through `"6"` or valid hex color
## References
- [JSON Canvas Spec 1.0](https://jsoncanvas.org/spec/1.0/)
- [JSON Canvas GitHub](https://github.com/obsidianmd/jsoncanvas)
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---
name: obsidian-bases
description: Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.
---
# Obsidian Bases Skill
This skill enables Claude Code to create and edit valid Obsidian Bases (`.base` files) including views, filters, formulas, and all related configurations.
## Overview
Obsidian Bases are YAML-based files that define dynamic views of notes in an Obsidian vault. A Base file can contain multiple views, global filters, formulas, property configurations, and custom summaries.
## File Format
Base files use the `.base` extension and contain valid YAML. They can also be embedded in Markdown code blocks.
## Complete Schema
```yaml
# Global filters apply to ALL views in the base
filters:
# Can be a single filter string
# OR a recursive filter object with and/or/not
and: []
or: []
not: []
# Define formula properties that can be used across all views
formulas:
formula_name: 'expression'
# Configure display names and settings for properties
properties:
property_name:
displayName: "Display Name"
formula.formula_name:
displayName: "Formula Display Name"
file.ext:
displayName: "Extension"
# Define custom summary formulas
summaries:
custom_summary_name: 'values.mean().round(3)'
# Define one or more views
views:
- type: table | cards | list | map
name: "View Name"
limit: 10 # Optional: limit results
groupBy: # Optional: group results
property: property_name
direction: ASC | DESC
filters: # View-specific filters
and: []
order: # Properties to display in order
- file.name
- property_name
- formula.formula_name
summaries: # Map properties to summary formulas
property_name: Average
```
## Filter Syntax
Filters narrow down results. They can be applied globally or per-view.
### Filter Structure
```yaml
# Single filter
filters: 'status == "done"'
# AND - all conditions must be true
filters:
and:
- 'status == "done"'
- 'priority > 3'
# OR - any condition can be true
filters:
or:
- 'file.hasTag("book")'
- 'file.hasTag("article")'
# NOT - exclude matching items
filters:
not:
- 'file.hasTag("archived")'
# Nested filters
filters:
or:
- file.hasTag("tag")
- and:
- file.hasTag("book")
- file.hasLink("Textbook")
- not:
- file.hasTag("book")
- file.inFolder("Required Reading")
```
### Filter Operators
| Operator | Description |
|----------|-------------|
| `==` | equals |
| `!=` | not equal |
| `>` | greater than |
| `<` | less than |
| `>=` | greater than or equal |
| `<=` | less than or equal |
| `&&` | logical and |
| `\|\|` | logical or |
| <code>!</code> | logical not |
## Properties
### Three Types of Properties
1. **Note properties** - From frontmatter: `note.author` or just `author`
2. **File properties** - File metadata: `file.name`, `file.mtime`, etc.
3. **Formula properties** - Computed values: `formula.my_formula`
### File Properties Reference
| Property | Type | Description |
|----------|------|-------------|
| `file.name` | String | File name |
| `file.basename` | String | File name without extension |
| `file.path` | String | Full path to file |
| `file.folder` | String | Parent folder path |
| `file.ext` | String | File extension |
| `file.size` | Number | File size in bytes |
| `file.ctime` | Date | Created time |
| `file.mtime` | Date | Modified time |
| `file.tags` | List | All tags in file |
| `file.links` | List | Internal links in file |
| `file.backlinks` | List | Files linking to this file |
| `file.embeds` | List | Embeds in the note |
| `file.properties` | Object | All frontmatter properties |
### The `this` Keyword
- In main content area: refers to the base file itself
- When embedded: refers to the embedding file
- In sidebar: refers to the active file in main content
## Formula Syntax
Formulas compute values from properties. Defined in the `formulas` section.
```yaml
formulas:
# Simple arithmetic
total: "price * quantity"
# Conditional logic
status_icon: 'if(done, "✅", "⏳")'
# String formatting
formatted_price: 'if(price, price.toFixed(2) + " dollars")'
# Date formatting
created: 'file.ctime.format("YYYY-MM-DD")'
# Complex expressions
days_old: '((now() - file.ctime) / 86400000).round(0)'
```
## Functions Reference
### Global Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `date()` | `date(string): date` | Parse string to date. Format: `YYYY-MM-DD HH:mm:ss` |
| `duration()` | `duration(string): duration` | Parse duration string |
| `now()` | `now(): date` | Current date and time |
| `today()` | `today(): date` | Current date (time = 00:00:00) |
| `if()` | `if(condition, trueResult, falseResult?)` | Conditional |
| `min()` | `min(n1, n2, ...): number` | Smallest number |
| `max()` | `max(n1, n2, ...): number` | Largest number |
| `number()` | `number(any): number` | Convert to number |
| `link()` | `link(path, display?): Link` | Create a link |
| `list()` | `list(element): List` | Wrap in list if not already |
| `file()` | `file(path): file` | Get file object |
| `image()` | `image(path): image` | Create image for rendering |
| `icon()` | `icon(name): icon` | Lucide icon by name |
| `html()` | `html(string): html` | Render as HTML |
| `escapeHTML()` | `escapeHTML(string): string` | Escape HTML characters |
### Any Type Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `isTruthy()` | `any.isTruthy(): boolean` | Coerce to boolean |
| `isType()` | `any.isType(type): boolean` | Check type |
| `toString()` | `any.toString(): string` | Convert to string |
### Date Functions & Fields
**Fields:** `date.year`, `date.month`, `date.day`, `date.hour`, `date.minute`, `date.second`, `date.millisecond`
| Function | Signature | Description |
|----------|-----------|-------------|
| `date()` | `date.date(): date` | Remove time portion |
| `format()` | `date.format(string): string` | Format with Moment.js pattern |
| `time()` | `date.time(): string` | Get time as string |
| `relative()` | `date.relative(): string` | Human-readable relative time |
| `isEmpty()` | `date.isEmpty(): boolean` | Always false for dates |
### Date Arithmetic
```yaml
# Duration units: y/year/years, M/month/months, d/day/days,
# w/week/weeks, h/hour/hours, m/minute/minutes, s/second/seconds
# Add/subtract durations
"date + \"1M\"" # Add 1 month
"date - \"2h\"" # Subtract 2 hours
"now() + \"1 day\"" # Tomorrow
"today() + \"7d\"" # A week from today
# Subtract dates for millisecond difference
"now() - file.ctime"
# Complex duration arithmetic
"now() + (duration('1d') * 2)"
```
### String Functions
**Field:** `string.length`
| Function | Signature | Description |
|----------|-----------|-------------|
| `contains()` | `string.contains(value): boolean` | Check substring |
| `containsAll()` | `string.containsAll(...values): boolean` | All substrings present |
| `containsAny()` | `string.containsAny(...values): boolean` | Any substring present |
| `startsWith()` | `string.startsWith(query): boolean` | Starts with query |
| `endsWith()` | `string.endsWith(query): boolean` | Ends with query |
| `isEmpty()` | `string.isEmpty(): boolean` | Empty or not present |
| `lower()` | `string.lower(): string` | To lowercase |
| `title()` | `string.title(): string` | To Title Case |
| `trim()` | `string.trim(): string` | Remove whitespace |
| `replace()` | `string.replace(pattern, replacement): string` | Replace pattern |
| `repeat()` | `string.repeat(count): string` | Repeat string |
| `reverse()` | `string.reverse(): string` | Reverse string |
| `slice()` | `string.slice(start, end?): string` | Substring |
| `split()` | `string.split(separator, n?): list` | Split to list |
### Number Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `abs()` | `number.abs(): number` | Absolute value |
| `ceil()` | `number.ceil(): number` | Round up |
| `floor()` | `number.floor(): number` | Round down |
| `round()` | `number.round(digits?): number` | Round to digits |
| `toFixed()` | `number.toFixed(precision): string` | Fixed-point notation |
| `isEmpty()` | `number.isEmpty(): boolean` | Not present |
### List Functions
**Field:** `list.length`
| Function | Signature | Description |
|----------|-----------|-------------|
| `contains()` | `list.contains(value): boolean` | Element exists |
| `containsAll()` | `list.containsAll(...values): boolean` | All elements exist |
| `containsAny()` | `list.containsAny(...values): boolean` | Any element exists |
| `filter()` | `list.filter(expression): list` | Filter by condition (uses `value`, `index`) |
| `map()` | `list.map(expression): list` | Transform elements (uses `value`, `index`) |
| `reduce()` | `list.reduce(expression, initial): any` | Reduce to single value (uses `value`, `index`, `acc`) |
| `flat()` | `list.flat(): list` | Flatten nested lists |
| `join()` | `list.join(separator): string` | Join to string |
| `reverse()` | `list.reverse(): list` | Reverse order |
| `slice()` | `list.slice(start, end?): list` | Sublist |
| `sort()` | `list.sort(): list` | Sort ascending |
| `unique()` | `list.unique(): list` | Remove duplicates |
| `isEmpty()` | `list.isEmpty(): boolean` | No elements |
### File Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `asLink()` | `file.asLink(display?): Link` | Convert to link |
| `hasLink()` | `file.hasLink(otherFile): boolean` | Has link to file |
| `hasTag()` | `file.hasTag(...tags): boolean` | Has any of the tags |
| `hasProperty()` | `file.hasProperty(name): boolean` | Has property |
| `inFolder()` | `file.inFolder(folder): boolean` | In folder or subfolder |
### Link Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `asFile()` | `link.asFile(): file` | Get file object |
| `linksTo()` | `link.linksTo(file): boolean` | Links to file |
### Object Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `isEmpty()` | `object.isEmpty(): boolean` | No properties |
| `keys()` | `object.keys(): list` | List of keys |
| `values()` | `object.values(): list` | List of values |
### Regular Expression Functions
| Function | Signature | Description |
|----------|-----------|-------------|
| `matches()` | `regexp.matches(string): boolean` | Test if matches |
## View Types
### Table View
```yaml
views:
- type: table
name: "My Table"
order:
- file.name
- status
- due_date
summaries:
price: Sum
count: Average
```
### Cards View
```yaml
views:
- type: cards
name: "Gallery"
order:
- file.name
- cover_image
- description
```
### List View
```yaml
views:
- type: list
name: "Simple List"
order:
- file.name
- status
```
### Map View
Requires latitude/longitude properties and the Maps plugin.
```yaml
views:
- type: map
name: "Locations"
# Map-specific settings for lat/lng properties
```
## Default Summary Formulas
| Name | Input Type | Description |
|------|------------|-------------|
| `Average` | Number | Mathematical mean |
| `Min` | Number | Smallest number |
| `Max` | Number | Largest number |
| `Sum` | Number | Sum of all numbers |
| `Range` | Number | Max - Min |
| `Median` | Number | Mathematical median |
| `Stddev` | Number | Standard deviation |
| `Earliest` | Date | Earliest date |
| `Latest` | Date | Latest date |
| `Range` | Date | Latest - Earliest |
| `Checked` | Boolean | Count of true values |
| `Unchecked` | Boolean | Count of false values |
| `Empty` | Any | Count of empty values |
| `Filled` | Any | Count of non-empty values |
| `Unique` | Any | Count of unique values |
## Complete Examples
### Task Tracker Base
```yaml
filters:
and:
- file.hasTag("task")
- 'file.ext == "md"'
formulas:
days_until_due: 'if(due, ((date(due) - today()) / 86400000).round(0), "")'
is_overdue: 'if(due, date(due) < today() && status != "done", false)'
priority_label: 'if(priority == 1, "🔴 High", if(priority == 2, "🟡 Medium", "🟢 Low"))'
properties:
status:
displayName: Status
formula.days_until_due:
displayName: "Days Until Due"
formula.priority_label:
displayName: Priority
views:
- type: table
name: "Active Tasks"
filters:
and:
- 'status != "done"'
order:
- file.name
- status
- formula.priority_label
- due
- formula.days_until_due
groupBy:
property: status
direction: ASC
summaries:
formula.days_until_due: Average
- type: table
name: "Completed"
filters:
and:
- 'status == "done"'
order:
- file.name
- completed_date
```
### Reading List Base
```yaml
filters:
or:
- file.hasTag("book")
- file.hasTag("article")
formulas:
reading_time: 'if(pages, (pages * 2).toString() + " min", "")'
status_icon: 'if(status == "reading", "📖", if(status == "done", "✅", "📚"))'
year_read: 'if(finished_date, date(finished_date).year, "")'
properties:
author:
displayName: Author
formula.status_icon:
displayName: ""
formula.reading_time:
displayName: "Est. Time"
views:
- type: cards
name: "Library"
order:
- cover
- file.name
- author
- formula.status_icon
filters:
not:
- 'status == "dropped"'
- type: table
name: "Reading List"
filters:
and:
- 'status == "to-read"'
order:
- file.name
- author
- pages
- formula.reading_time
```
### Project Notes Base
```yaml
filters:
and:
- file.inFolder("Projects")
- 'file.ext == "md"'
formulas:
last_updated: 'file.mtime.relative()'
link_count: 'file.links.length'
summaries:
avgLinks: 'values.filter(value.isType("number")).mean().round(1)'
properties:
formula.last_updated:
displayName: "Updated"
formula.link_count:
displayName: "Links"
views:
- type: table
name: "All Projects"
order:
- file.name
- status
- formula.last_updated
- formula.link_count
summaries:
formula.link_count: avgLinks
groupBy:
property: status
direction: ASC
- type: list
name: "Quick List"
order:
- file.name
- status
```
### Daily Notes Index
```yaml
filters:
and:
- file.inFolder("Daily Notes")
- '/^\d{4}-\d{2}-\d{2}$/.matches(file.basename)'
formulas:
word_estimate: '(file.size / 5).round(0)'
day_of_week: 'date(file.basename).format("dddd")'
properties:
formula.day_of_week:
displayName: "Day"
formula.word_estimate:
displayName: "~Words"
views:
- type: table
name: "Recent Notes"
limit: 30
order:
- file.name
- formula.day_of_week
- formula.word_estimate
- file.mtime
```
## Embedding Bases
Embed in Markdown files:
```markdown
![[MyBase.base]]
<!-- Specific view -->
![[MyBase.base#View Name]]
```
## YAML Quoting Rules
- Use single quotes for formulas containing double quotes: `'if(done, "Yes", "No")'`
- Use double quotes for simple strings: `"My View Name"`
- Escape nested quotes properly in complex expressions
## Common Patterns
### Filter by Tag
```yaml
filters:
and:
- file.hasTag("project")
```
### Filter by Folder
```yaml
filters:
and:
- file.inFolder("Notes")
```
### Filter by Date Range
```yaml
filters:
and:
- 'file.mtime > now() - "7d"'
```
### Filter by Property Value
```yaml
filters:
and:
- 'status == "active"'
- 'priority >= 3'
```
### Combine Multiple Conditions
```yaml
filters:
or:
- and:
- file.hasTag("important")
- 'status != "done"'
- and:
- 'priority == 1'
- 'due != ""'
```
## References
- [Bases Syntax](https://help.obsidian.md/bases/syntax)
- [Functions](https://help.obsidian.md/bases/functions)
- [Views](https://help.obsidian.md/bases/views)
- [Formulas](https://help.obsidian.md/formulas)
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---
name: obsidian-markdown
description: Create and edit Obsidian Flavored Markdown with wikilinks, embeds, callouts, properties, and other Obsidian-specific syntax. Use when working with .md files in Obsidian, or when the user mentions wikilinks, callouts, frontmatter, tags, embeds, or Obsidian notes.
---
# Obsidian Flavored Markdown Skill
This skill enables Claude Code to create and edit valid Obsidian Flavored Markdown, including all Obsidian-specific syntax extensions.
## Overview
Obsidian uses a combination of Markdown flavors:
- [CommonMark](https://commonmark.org/)
- [GitHub Flavored Markdown](https://github.github.com/gfm/)
- [LaTeX](https://www.latex-project.org/) for math
- Obsidian-specific extensions (wikilinks, callouts, embeds, etc.)
## Basic Formatting
### Paragraphs and Line Breaks
```markdown
This is a paragraph.
This is another paragraph (blank line between creates separate paragraphs).
For a line break within a paragraph, add two spaces at the end
or use Shift+Enter.
```
### Headings
```markdown
# Heading 1
## Heading 2
### Heading 3
#### Heading 4
##### Heading 5
###### Heading 6
```
### Text Formatting
| Style | Syntax | Example | Output |
|-------|--------|---------|--------|
| Bold | `**text**` or `__text__` | `**Bold**` | **Bold** |
| Italic | `*text*` or `_text_` | `*Italic*` | *Italic* |
| Bold + Italic | `***text***` | `***Both***` | ***Both*** |
| Strikethrough | `~~text~~` | `~~Striked~~` | ~~Striked~~ |
| Highlight | `==text==` | `==Highlighted==` | ==Highlighted== |
| Inline code | `` `code` `` | `` `code` `` | `code` |
### Escaping Formatting
Use backslash to escape special characters:
```markdown
\*This won't be italic\*
\#This won't be a heading
1\. This won't be a list item
```
Common characters to escape: `\*`, `\_`, `\#`, `` \` ``, `\|`, `\~`
## Internal Links (Wikilinks)
### Basic Links
```markdown
[[Note Name]]
[[Note Name.md]]
[[Note Name|Display Text]]
```
### Link to Headings
```markdown
[[Note Name#Heading]]
[[Note Name#Heading|Custom Text]]
[[#Heading in same note]]
[[##Search all headings in vault]]
```
### Link to Blocks
```markdown
[[Note Name#^block-id]]
[[Note Name#^block-id|Custom Text]]
```
Define a block ID by adding `^block-id` at the end of a paragraph:
```markdown
This is a paragraph that can be linked to. ^my-block-id
```
For lists and quotes, add the block ID on a separate line:
```markdown
> This is a quote
> With multiple lines
^quote-id
```
### Search Links
```markdown
[[##heading]] Search for headings containing "heading"
[[^^block]] Search for blocks containing "block"
```
## Markdown-Style Links
```markdown
[Display Text](Note%20Name.md)
[Display Text](Note%20Name.md#Heading)
[Display Text](https://example.com)
[Note](obsidian://open?vault=VaultName&file=Note.md)
```
Note: Spaces must be URL-encoded as `%20` in Markdown links.
## Embeds
### Embed Notes
```markdown
![[Note Name]]
![[Note Name#Heading]]
![[Note Name#^block-id]]
```
### Embed Images
```markdown
![[image.png]]
![[image.png|640x480]] Width x Height
![[image.png|300]] Width only (maintains aspect ratio)
```
### External Images
```markdown
![Alt text](https://example.com/image.png)
![Alt text|300](https://example.com/image.png)
```
### Embed Audio
```markdown
![[audio.mp3]]
![[audio.ogg]]
```
### Embed PDF
```markdown
![[document.pdf]]
![[document.pdf#page=3]]
![[document.pdf#height=400]]
```
### Embed Lists
```markdown
![[Note#^list-id]]
```
Where the list has been defined with a block ID:
```markdown
- Item 1
- Item 2
- Item 3
^list-id
```
### Embed Search Results
````markdown
```query
tag:#project status:done
```
````
## Callouts
### Basic Callout
```markdown
> [!note]
> This is a note callout.
> [!info] Custom Title
> This callout has a custom title.
> [!tip] Title Only
```
### Foldable Callouts
```markdown
> [!faq]- Collapsed by default
> This content is hidden until expanded.
> [!faq]+ Expanded by default
> This content is visible but can be collapsed.
```
### Nested Callouts
```markdown
> [!question] Outer callout
> > [!note] Inner callout
> > Nested content
```
### Supported Callout Types
| Type | Aliases | Description |
|------|---------|-------------|
| `note` | - | Blue, pencil icon |
| `abstract` | `summary`, `tldr` | Teal, clipboard icon |
| `info` | - | Blue, info icon |
| `todo` | - | Blue, checkbox icon |
| `tip` | `hint`, `important` | Cyan, flame icon |
| `success` | `check`, `done` | Green, checkmark icon |
| `question` | `help`, `faq` | Yellow, question mark |
| `warning` | `caution`, `attention` | Orange, warning icon |
| `failure` | `fail`, `missing` | Red, X icon |
| `danger` | `error` | Red, zap icon |
| `bug` | - | Red, bug icon |
| `example` | - | Purple, list icon |
| `quote` | `cite` | Gray, quote icon |
### Custom Callouts (CSS)
```css
.callout[data-callout="custom-type"] {
--callout-color: 255, 0, 0;
--callout-icon: lucide-alert-circle;
}
```
## Lists
### Unordered Lists
```markdown
- Item 1
- Item 2
- Nested item
- Another nested
- Item 3
* Also works with asterisks
+ Or plus signs
```
### Ordered Lists
```markdown
1. First item
2. Second item
1. Nested numbered
2. Another nested
3. Third item
1) Alternative syntax
2) With parentheses
```
### Task Lists
```markdown
- [ ] Incomplete task
- [x] Completed task
- [ ] Task with sub-tasks
- [ ] Subtask 1
- [x] Subtask 2
```
## Quotes
```markdown
> This is a blockquote.
> It can span multiple lines.
>
> And include multiple paragraphs.
>
> > Nested quotes work too.
```
## Code
### Inline Code
```markdown
Use `backticks` for inline code.
Use double backticks for ``code with a ` backtick inside``.
```
### Code Blocks
````markdown
```
Plain code block
```
```javascript
// Syntax highlighted code block
function hello() {
console.log("Hello, world!");
}
```
```python
# Python example
def greet(name):
print(f"Hello, {name}!")
```
````
### Nesting Code Blocks
Use more backticks or tildes for the outer block:
`````markdown
````markdown
Here's how to create a code block:
```js
console.log("Hello")
```
````
`````
## Tables
```markdown
| Header 1 | Header 2 | Header 3 |
|----------|----------|----------|
| Cell 1 | Cell 2 | Cell 3 |
| Cell 4 | Cell 5 | Cell 6 |
```
### Alignment
```markdown
| Left | Center | Right |
|:---------|:--------:|---------:|
| Left | Center | Right |
```
### Using Pipes in Tables
Escape pipes with backslash:
```markdown
| Column 1 | Column 2 |
|----------|----------|
| [[Link\|Display]] | ![[Image\|100]] |
```
## Math (LaTeX)
### Inline Math
```markdown
This is inline math: $e^{i\pi} + 1 = 0$
```
### Block Math
```markdown
$$
\begin{vmatrix}
a & b \\
c & d
\end{vmatrix} = ad - bc
$$
```
### Common Math Syntax
```markdown
$x^2$ Superscript
$x_i$ Subscript
$\frac{a}{b}$ Fraction
$\sqrt{x}$ Square root
$\sum_{i=1}^{n}$ Summation
$\int_a^b$ Integral
$\alpha, \beta$ Greek letters
```
## Diagrams (Mermaid)
````markdown
```mermaid
graph TD
A[Start] --> B{Decision}
B -->|Yes| C[Do this]
B -->|No| D[Do that]
C --> E[End]
D --> E
```
````
### Sequence Diagrams
````markdown
```mermaid
sequenceDiagram
Alice->>Bob: Hello Bob
Bob-->>Alice: Hi Alice
```
````
### Linking in Diagrams
````markdown
```mermaid
graph TD
A[Biology]
B[Chemistry]
A --> B
class A,B internal-link;
```
````
## Footnotes
```markdown
This sentence has a footnote[^1].
[^1]: This is the footnote content.
You can also use named footnotes[^note].
[^note]: Named footnotes still appear as numbers.
Inline footnotes are also supported.^[This is an inline footnote.]
```
## Comments
```markdown
This is visible %%but this is hidden%% text.
%%
This entire block is hidden.
It won't appear in reading view.
%%
```
## Horizontal Rules
```markdown
---
***
___
- - -
* * *
```
## Properties (Frontmatter)
Properties use YAML frontmatter at the start of a note:
```yaml
---
title: My Note Title
date: 2024-01-15
tags:
- project
- important
aliases:
- My Note
- Alternative Name
cssclasses:
- custom-class
status: in-progress
rating: 4.5
completed: false
due: 2024-02-01T14:30:00
---
```
### Property Types
| Type | Example |
|------|---------|
| Text | `title: My Title` |
| Number | `rating: 4.5` |
| Checkbox | `completed: true` |
| Date | `date: 2024-01-15` |
| Date & Time | `due: 2024-01-15T14:30:00` |
| List | `tags: [one, two]` or YAML list |
| Links | `related: "[[Other Note]]"` |
### Default Properties
- `tags` - Note tags
- `aliases` - Alternative names for the note
- `cssclasses` - CSS classes applied to the note
## Tags
```markdown
#tag
#nested/tag
#tag-with-dashes
#tag_with_underscores
In frontmatter:
---
tags:
- tag1
- nested/tag2
---
```
Tags can contain:
- Letters (any language)
- Numbers (not as first character)
- Underscores `_`
- Hyphens `-`
- Forward slashes `/` (for nesting)
## HTML Content
Obsidian supports HTML within Markdown:
```markdown
<div class="custom-container">
<span style="color: red;">Colored text</span>
</div>
<details>
<summary>Click to expand</summary>
Hidden content here.
</details>
<kbd>Ctrl</kbd> + <kbd>C</kbd>
```
## Complete Example
````markdown
---
title: Project Alpha
date: 2024-01-15
tags:
- project
- active
status: in-progress
priority: high
---
# Project Alpha
## Overview
This project aims to [[improve workflow]] using modern techniques.
> [!important] Key Deadline
> The first milestone is due on ==January 30th==.
## Tasks
- [x] Initial planning
- [x] Resource allocation
- [ ] Development phase
- [ ] Backend implementation
- [ ] Frontend design
- [ ] Testing
- [ ] Deployment
## Technical Notes
The main algorithm uses the formula $O(n \log n)$ for sorting.
```python
def process_data(items):
return sorted(items, key=lambda x: x.priority)
```
## Architecture
```mermaid
graph LR
A[Input] --> B[Process]
B --> C[Output]
B --> D[Cache]
```
## Related Documents
- ![[Meeting Notes 2024-01-10#Decisions]]
- [[Budget Allocation|Budget]]
- [[Team Members]]
## References
For more details, see the official documentation[^1].
[^1]: https://example.com/docs
%%
Internal notes:
- Review with team on Friday
- Consider alternative approaches
%%
````
## References
- [Basic formatting syntax](https://help.obsidian.md/syntax)
- [Advanced formatting syntax](https://help.obsidian.md/advanced-syntax)
- [Obsidian Flavored Markdown](https://help.obsidian.md/obsidian-flavored-markdown)
- [Internal links](https://help.obsidian.md/links)
- [Embed files](https://help.obsidian.md/embeds)
- [Callouts](https://help.obsidian.md/callouts)
- [Properties](https://help.obsidian.md/properties)