Markdown notes that run shell commands, code, SQL, and AI promptsMarkdown notes that run_

Markdown notes that run shell commands, code, SQL, and AI promptsMarkdown notes that run\_

New subscriptions this week

Stripe API notes

New subscriptions this week

\--- profile: stripe \---

Monday check on last week's signups. The stripe profile holds the API key and database URL. Endpoints are in Stripe API notes. #growth

sh

curl -sG https://api.stripe.com/v1/subscriptions -u "$STRIPE_KEY:" \ -d limit=100 -d "created[gte]=$(date -v-7d +%s)" > subs.json jq -r '.data[].plan.nickname' subs.json | sort | uniq -c | sort -rn

24 Pro, 11 Team, and 3 Business since last Monday.

python

import json subs = json.load(open("subs.json"))["data"] mrr = sum(s["plan"]["amount"] for s in subs) / 100 print(f"{len(subs)} subscriptions, +${mrr:,.0f} MRR")

38 new subscriptions, adding $2,682 in MRR.

sql

select source, count(*) as upgrades from accounts where upgraded_at >= now() - interval '7 days' group by source order by upgrades desc;

The database agrees: 38 upgrades. Newsletter 17, docs 12, referrals 9.

prompt

Write this week's growth update from this note for #team

A Markdown notebook for developers and DevOps who keep commands in their notes. Write a note, press ⌘↩ on a code block, and its output streams in beneath it. In your shell, in your project, on your machine, or on a server.

Download for Apple SiliconDownload for WindowsDownload for Linux

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Download for mobile

iPhone and iPadApp StoreAndroidBeta

View source

Install Ledge Server`$ curl -fsSL https://ledge.sh/server.sh | sh`Copy

Free and open source · Apache-2.0 · macOS on Apple Silicon · Linux · Windows 11 with WSL · iPhone and iPad · Android (beta)

Each note has its own shell

Shell blocks run in a persistent shell that belongs to the note. A `cd`, an exported variable, or an activated virtualenv carries into the next run.

• ⌘↩ runs the block under the caret. Output streams in beneath it.
• ⇧⌘↩ sends the block to the note's terminal drawer, a second shell you can keep typing in.
• A running block takes input. Answer a `sudo` password or a `[y/N]` in the output panel.
• `cwd:` and `env:` in the frontmatter set where the note's shells start and what they carry.
• `norun` on a fence takes the Run button away. Use it for a command you are quoting, not running.
Docs: Running Code

Invoice rounding bug

Invoice rounding bug

Totals drift by a cent on partial refunds. Repro first. #billing

sh

cd services/billing && source .venv/bin/activate

sh

pytest -q --tb=no tests/test_refunds.py

Terminal

Keep your notes on a server

Point Ledge at a machine over ssh and the notes live there. The server holds the files and runs the shells. The app on your computer is the window onto it.

• No account, no service, and no port to open. The only thing between you and the server is ssh.
• Shells and running blocks belong to the server. Close the laptop and they keep going. The output is waiting when you open it again.
• Your computer, your phone, and a second window can all be on one server at once, each with its own tabs.
• Sign in with an ssh key, or with a password kept in the system keychain. Ledge pins the server's host key and refuses any other.
• Install with the command below. `ledge backup` puts an encrypted copy of the notes in an S3-compatible bucket every hour.

Install Ledge Server`$ curl -fsSL https://ledge.sh/server.sh | sh`Copy

Docs: Keep Notes on a Remote Server

vps-1

\--- cwd: \~/api \---

Cut 2.4.2 from the server, not the laptop. The build takes a minute.

sh

make release

The same notes on your phone

Ledge runs on iPhone and iPad as a window onto the same server. The phone holds no notes. It reads, edits, and runs what is on the server.

• Read, edit, and create notes with live preview. Search, tags, backlinks, daily notes, and wikilinks all work.
• Tap Run on a block and it runs on the server. Switch apps and it keeps running. The output is waiting when you come back.
• `^C`, `^D`, Escape, and the arrow keys sit above the keyboard, so you can interrupt a command, quit a pager, or move around in htop.
• Scan the pairing code that `ledge pair` prints on the server. The phone signs in with a key made in the Secure Enclave that never leaves it, and that key can speak to Ledge and nothing else.
• Locked notes unlock with the passphrase. The phone stores none of it.
Docs: Ledge on Your Phone

homelab

Media server

Two episodes transcoding. Check before starting a third.

sh

htop

BI\\[

Run blocks on other machines

Add a `host:` line to the frontmatter and every run in the note happens over ssh on that host. The note itself stays where it is.

• Declare several hosts and Ledge asks which one on every run. Enter repeats your last pick.
• Mark a block `confirm` and Ledge shows the code, names the machine, and asks before running it.
• Authentication is your own `ssh`. Keys, agents, `~/.ssh/config`, and 2FA work as they do in a terminal.
• The note's `cwd` and `env` travel with the run. Profiles and secrets never do.
• `python`, `node`, and other interpreted blocks run on the host too, with a per-machine interpreter override in Settings.
[Docs: Run Code on Remote Hosts

\--- cwd: \~/Projects/api host: staging, deploy@prod \---

Stale session keys after the 2.4.1 deploy. Flush staging, verify, then prod.

sh confirm="Flush the session cache?"

redis-cli -n 2 flushdb

Put notes side by side

⌘D splits the view left and right, ⇧⌘D top and bottom, and either side can split again. Each pane has its own tabs.

• Every note keeps its own shell, so two panes are two working environments. A run keeps streaming in the pane you left.
• Drag a tab to another pane. It keeps its caret, scroll position, undo history, and any output still streaming.
• ⌃Tab cycles tabs. ⌃1 to ⌃9 jump to one by position.
• Each workspace saves its layout and restores it at the next launch. ⌘1 to ⌘9 switch workspaces, layout and all.
• One terminal drawer spans the window and follows the focused note.
Docs: Panes and Tabs

Trial length bug

cwd: \~/Projects/api

Trial length bug

Some trials end a day early.

sh

go test ./...

Untitled

Secrets stay out of your notes

A profile is a named file of environment variables kept outside your notes folder. A note that names it gets the variables in its shells. The note carries only the name.

• `profile: deploy` in the frontmatter reads `~/.config/ledge/profiles/deploy.env`, a plain dotenv file readable only by you.
• Notes get synced, backed up, and read by agents. A profile value stays on the machine.
• Any number of notes can share one profile. An `env:` line overrides a value for one note.
• A built-in editor shows the values masked, with one toggle to reveal them.
• `envFile: .env` loads the project's own dotenv for everything that is not a secret.
Docs: Profiles and Secrets

\--- cwd: \~/Projects/api profile: deploy \---

Backup restore drill. The AWS keys come from the deploy profile.

sh

aws s3 ls s3://ledge-api-backups/nightly/ | tail -2

Built to be worked by agents

Ledge ships an MCP server. `claude mcp add ledge -- ledge mcp` connects Claude Code, and any MCP agent can read, search, create, and edit your notes through it.

• Notes are addressed by title, which survives renames, so an agent's references do not go stale.
• A terminal opened inside a note knows which note it is in. "Add a TODO section here" needs no explanation.
• A `prompt` code block is a runnable block. ⌘↩ pipes it to the agent and the reply streams in beneath it.
• Agents can read your settings and the manual, so "check the Ledge docs" is a fair instruction.
• There is no delete tool, and locked notes refuse their bodies to every agent.
Docs: Agents and Ledge

Release 2.5.0

Release 2.5.0

Tag after the migration bake. Checklist in Release runbook. #release

sh

git log --oneline v2.4.1..HEAD | head -3

Done84 ms

9f31c22 storage: chunked uploads for assets over 50 MB 41b0a07 api: rate limit per token, not per IP c2ade19 fix: retry idempotent writes on 5xx

Terminal

dev@mbp api % claude

Lock the notes that matter

Locking encrypts a note's body on disk behind a passphrase. Agents never see it, sync services carry ciphertext, and reading it requires an unlock.

• The title, frontmatter, and tags stay visible, so links and navigation keep working.
• Search and backlinks skip locked bodies and say how many notes they skipped.
• One passphrase covers every locked note. ⌘L relocks, and the vault relocks itself after 15 minutes idle.
• Images pasted into a locked note are sealed with it.
• A locked note is self-contained. On another machine it unlocks with the passphrase alone. There is no recovery.
Docs: Note Locking

Comp review 2026

This note is locked. Its body stays sealed on disk, away from agents and search, until you unlock.

Unlock Notes…

Terminal

dev@mbp notes % ledge cat "Comp review 2026"

Sync with anything, share with git

Notes are plain files in ordinary folders, so syncing them is syncing a folder: iCloud Drive, Dropbox, git, Syncthing, or whatever you already use. There is no database on the side.

• Ledge watches the folder and follows outside changes live, even in an open note.
• Push a workspace to a git remote and the people you work with clone it. Each clone attaches as an ordinary workspace, and a pull shows up in the sidebar with nothing to refresh.
• One note changed in two clones is a git conflict like any other. If a pull rewrites a note you have open, your version keeps the file and the other goes to the workspace trash.
• A Sync note in the workspace pulls, commits, and pushes with one ⌘↩.
• Profiles never enter the folder, locked notes travel as ciphertext, and the trash stays out of git.
Docs: Keep Notes Synced

Sync

This workspace is a repo. One run commits and pushes every note in it.

sh

git add -A && git commit -m "notes $(date +%F)" || true git pull --rebase && git push

Ways to use Ledge

Six kinds of notes, each with the manual page that covers it.

Data exploration

sql

select plan, count(*) from signups group by plan;

Done41 ms

plan | count ------+------- free | 1204 pro | 187

python

import pandas as pd df = pd.read_csv("signups.csv") print(df["source"].mode()[0])

Done610 ms

newsletter

Docs: Running Code

Project runbook

cwd: \~/Projects/api

envFile: .env

sh

docker compose up -d db make migrate

Done3.8 s

✔ Container api-db-1 Started migrated to 0043_signup_source

Docs: Run a Project from a Note

Incident response

profile: prod-readonly

redis

INFO keyspace

Done12 ms

Keyspace

db0:keys=4812339,expires=0,avg_ttl=0

Docs: Profiles and Secrets

Learning to code

ruby

%w[a b c].each_with_index do |s, i| puts "#{i}: #{s}" end

Done88 ms

0: a 1: b 2: c

Docs: Running Code

Homelab

host: homelab

sh

zpool list -o name,cap,health

Done1.1 shomelab

NAME CAP HEALTH tank 81% ONLINE

Docs: Run Code on Remote Hosts

Daily journal

prompt

List the open tasks in [[2026-07-30]]

Done4.2 s

• Send the lease renewal back
• Finish the chapter 4 notes

Docs: Daily Notes and Templates

The notes app underneath

Everything else you expect from a notes app is here.

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"

Runnable Markdown notes\_

Free and open source under Apache-2.0. No account required, and no database on the side. Your notes are Markdown files on your computer or on a server you run, and they stay yours.

Download for Apple SiliconDownload for WindowsDownload for Linux

MacApple SiliconWindowsx64Linuxx64Linuxarm64Requirements and install steps

Download for mobile

iPhone and iPadApp StoreAndroidBeta

Star on GitHub

Install Ledge Server`$ curl -fsSL https://ledge.sh/server.sh | sh`Copy

FreeApache-2.0No accountPlain filesMac, Linux, Windows, iPhone