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How to work with this Hashy notes vault. Loaded when searching, reading, or creating notes.

polka-computer By polka-computer schedule Updated 2/13/2026

name: hashy description: How to work with this Hashy notes vault. Loaded when searching, reading, or creating notes. user-invocable: false

Hashy Vault

This directory is a Hashy knowledge base. Files here sync across devices and appear in the Hashy app.

Reading & searching notes

Use your normal tools to explore:

  • Grep to search note content (e.g. find all notes mentioning "kubernetes")
  • Glob to find files by pattern (e.g. *.md)
  • Read to read a note's content

Creating notes

Create new notes as markdown files in the root of this directory. Do NOT create subdirectories.

Filename: Use a ULID (time-ordered unique ID) with .md extension. Generate one with hashy_ulid:

hashy_ulid   # → 01J5A3B9KP7QXYZ12345ABCDE.md

Frontmatter: Every note MUST start with YAML frontmatter containing at least a title:

---
title: My Note Title
tags:
  - example
  - reference
icon: "\U0001F4DD"
---

Your note content here...
Field Required Description
title Yes Display name shown in the app
tags No Array of tags for filtering
icon No Single emoji shown next to the title

Editing notes

Edit the markdown body below the frontmatter --- delimiter. Preserve the frontmatter block. To rename a note, change the title field in frontmatter (NOT the filename).

What happens

  • New/changed files appear in the Hashy app within seconds
  • If iCloud is enabled, changes sync to all devices automatically
  • The app reads frontmatter for display — no frontmatter means no title in the sidebar

Supported markdown

Hashy renders the following markdown syntax with live highlighting. Use these freely in note content.

Text formatting

Syntax Renders as
**bold** bold
*italic* italic
`inline code` inline code
> blockquote Blockquote (dimmed text)

Headings

# H1 through ###### H6 — each level gets progressively smaller/lighter styling.

Lists

Bullet lists with - or *:

- First item
- Second item
  - Nested (indent 2 spaces)

List continuation is automatic — pressing Enter continues the list prefix.

Task lists (interactive)

Tasks are clickable checkboxes in the app. Completed tasks render with strikethrough.

- [ ] Open task
- [x] Completed task

Toggle a task by clicking its checkbox, or use Cmd+Return on a line to cycle between plain list item → open task → completed task.

Links

Standard markdown links render inline — the URL portion is hidden, showing only the link text:

[Link text](https://example.com)

Bare URLs are auto-linked:

https://example.com

Wiki-links (cross-references between notes)

Reference other notes using wiki-link syntax. The note ID is the filename without .md:

[[NOTE_ID|Display Name]]
[[NOTE_ID]]

Examples:

See [[01J5A3B9KP7QXYZ12345ABCDE|Project Alpha]] for details.
Related: [[01J5A3B9KP7QXYZ12345ABCDE]]

Wiki-links render as styled chips in the editor. The |Display Name part is optional — if omitted, the app resolves the title from the linked note's frontmatter.

When creating wiki-links programmatically, always use [[id|title]] format so the link text is readable even outside the app.

Images

Images are embedded with standard markdown syntax:

![Alt text](path/to/image.png)

Images are stored in a _assets/ subdirectory relative to the vault root. When adding images, save the file to _assets/ and reference it with a relative path:

![Screenshot](_assets/screenshot.png)

Remote images (https://...) are also supported and fetched on demand.

Vault search utilities

Bash helper functions for querying the vault are bundled in scripts/vault-search.sh. They are auto-sourced on session start via a SessionStart hook — just call them directly. All use only macOS-standard tools (grep, awk, sed, sort, ls).

Notes & search

Function Description Example
hashy_ulid Generate a ULID filename for a new note hashy_ulid
hashy_ls List notes with titles (most recent first) hashy_ls
hashy_tag TAG Find notes with a specific tag hashy_tag "kubernetes"
hashy_tags List all tags with occurrence counts hashy_tags
hashy_search QUERY Full-text search (skips frontmatter, case-insensitive) hashy_search "deployment"
hashy_find PATTERN Search notes by title pattern hashy_find "meeting"

Tasks

Function Description Example
hashy_tasks List all tasks (open and completed) hashy_tasks
hashy_todo List open tasks (- [ ]) only hashy_todo
hashy_done List completed tasks (- [x]) only hashy_done

Links & images

Function Description Example
hashy_links Extract all markdown links and bare URLs hashy_links
hashy_images Extract all image references (![alt](path)) hashy_images

Wiki-link graph

Function Description Example
hashy_wikilinks List all wiki-link connections (source → target) hashy_wikilinks
hashy_backlinks ID Find all notes that link to a specific note hashy_backlinks "01J5A3..."
hashy_graph Full connection map (adjacency list per note) hashy_graph
hashy_orphans Find notes with no incoming wiki-links hashy_orphans
hashy_broken Find wiki-links pointing to non-existent notes hashy_broken

Frontmatter quality

Function Description Example
hashy_notitle Find notes missing a title hashy_notitle
hashy_notags Find notes missing tags hashy_notags
hashy_noicon Find notes missing an icon emoji hashy_noicon
hashy_incomplete Find notes missing any field (shows which) hashy_incomplete

For implementation details, read scripts/vault-search.sh.

Install via CLI
npx skills add https://github.com/polka-computer/Hashy --skill hashy
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