tldraw offline nightly

The nightly channel for tldraw offline — a local whiteboard for you and your agents. Nightly builds are packaged from the latest source before changes ship to stable users.

Nightly is intended for internal/team use. If you're an end user, get the stable build from offline.tldraw.com or the tldraw-offline releases instead.

Artifact names are fixed across releases, so these links always point at the latest nightly build:

Older builds are on the Releases page. Versions are semver prereleases of the next release train, like 1.9.0-202607131439.9834194 (UTC timestamp + commit).

Nightly installs side-by-side with stable — different bundle id (com.tldraw.desktop-nightly), different name, different icon, and its own app data directory. Installing nightly does not touch your stable install or its files.

A new nightly is published every morning (07:00 UTC) whenever something has changed since the last one, plus on-demand runs. Installed apps check for updates on launch, download them in the background, and then prompt to install now or on next startup. You can also check manually from the application menu.

Like stable, the nightly app runs a local HTTP server exposing a Canvas API for programmatic access to your open tldraw documents — this is how coding agents inspect and edit a live canvas.

The server starts with the app (port 7236, falling back to a random port if taken) and writes connection details, including a per-launch auth token, to server.json in the nightly app data directory:

• macOS: ~/Library/Application Support/tldraw (Nightly)/server.json
• Windows: %APPDATA%/tldraw (Nightly)/server.json
• Linux: ~/.config/tldraw (Nightly)/server.json

Every /api route requires the token from server.json as an Authorization: Bearer <token> header. The readme at / is public and self-documenting — start there.

# Read connection info (macOS)
SERVER_JSON="$HOME/Library/Application Support/tldraw (Nightly)/server.json"
PORT=$(jq -r .port "$SERVER_JSON")
TOKEN=$(jq -r .token "$SERVER_JSON")

# API documentation (no auth required)
curl "http://localhost:$PORT/readme"

# List open documents
curl -X POST "http://localhost:$PORT/api/search" \
  -H "Authorization: Bearer $TOKEN" \
  -H 'Content-Type: application/json' \
  -d '{"code": "return await api.getDocs()"}'

# Run code against a document's live editor
curl -X POST "http://localhost:$PORT/api/doc/{id}/exec" \
  -H "Authorization: Bearer $TOKEN" \
  -H 'Content-Type: application/json' \
  -d '{"code": "return editor.getCurrentPageShapeIds().size"}'

tldraw offline nightly is not open source. All rights reserved.