Your languages
Python, Node, Ruby, and PHP run out of the box. A redis block feeds redis-cli, pointed at staging or prod by the note's REDIS_URL. TypeScript uses the Bun runtime bundled with the app, so ts blocks run with nothing installed. Adding an interpreter is one line in Settings.
"sql": "psql \"$DATABASE_URL\" -f"
Daily notes and templates
⌘J opens today's note, stamped from your daily template. Templates are ordinary notes with {{date}} and {{yesterday}} tokens, and one carrying a prompt block gives every morning a one-keystroke briefing.
promptSummarize [[{{yesterday}}]]
A workspace is a folder
Attach a project folder and its Markdown files become notes where they are, running their blocks in the project. ⌘1 to ⌘9 switch workspaces, and each keeps its own pane layout. Removing an attached folder from Ledge touches no files.
Attach Folder as Workspace…
Live preview
Syntax hides away from the caret: **bold** shows bold, links show their label, tables and images render in place, and a checkbox is clickable. Move the caret in and the exact characters come back. One setting shows every character all the time.
"editor.livePreview": false
Paste anything
Copy part of a web page, a Slack thread, or a Google Doc, and ⌘V pastes it as Markdown: headings, lists, checkboxes, links, and tables included. ⇧⌘V pastes the plain text. An image on the pasteboard lands in the workspace as a file, rendering in place; pasted into a locked note, it is encrypted from the first byte.
Find your way back
⌘P opens a note by title; type # for full-text search. Wikilinks address titles, so a retitle never leaves a stale link. Backlinks and outline each get a panel.
[[Oncall handbook#Paging]]
Tags and favorites
Tag a note with inline #hashtags or a frontmatter tags: line, and ⌥⌘T lists every tag with its count. Press f on a note's row, or click its star, and it sits in a Favorites section at the top of the sidebar, however deep in a folder it lives. Both are frontmatter, so they travel with the file.
favorite: true
Deleting is undoable
⌫ moves a note to the workspace trash and shows an Undo strip. The Trash section in the sidebar holds it for 30 days, where r restores it and permanent deletion asks first.
"trash.ttlDays": 30
The ledge CLI
Lists, reads, searches, creates, and appends from any terminal, and the app follows along live. Results go to stdout, everything conversational to stderr, so pipes stay clean, and --json switches any verb to machine-readable output.
git log --oneline -5 | ledge append "Release notes"