Building your first document

Canvas is a full-screen mode in the Nexrall app. This page walks through the first artifact end to end: opening Canvas, describing what you want, watching it build, and refining the result.

1. Open Canvas

Open the Canvas tab in the app and start a new artifact. You're now in an IDE-style layout: your artifact list on the left, the live document in the middle, and the chat that drives the agent on the right.

2. Describe what you want

Type what you want in plain language. As detailed or as vague as you like:

"Write a 5-slide pitch deck for a coffee subscription startup, with a chart showing projected revenue"

"Draft a one-page NDA between an agency and a client, in Vietnamese"

The agent decides for itself whether your message is a build instruction or just a question. If you ask it to critique what's there or to explain a chart, it answers in chat without touching the document. When a request is genuinely ambiguous about what to build — not about HTML/CSS, but about the content — it asks one short clarifying question instead of guessing and writing the wrong thing.

3. Watch it build live

The document renders as the agent writes it, not only once it's finished. You'll see sections appear, charts draw themselves, and layout settle in real time. If the document has several distinct parts, the agent keeps a task list (todo_write) so you can see which section it's on.

Two decisions shape the output and are worth knowing up front:

• Document vs. app-like tool. Almost everything you ask for is a document — something meant to be read, printed, or presented — and Canvas defaults to that: clean typography, generous margins, no app chrome. Only when you explicitly ask for something to operate (an interactive dashboard, a calculator with filters) does it add persistent controls.
• Model. Pick a model from the chat's model picker, same as Agent Coding. Models from Anthropic, OpenAI, DeepSeek and Qwen are available, and the picker shows the real model name — not a tier label — so you know what you're paying for. See Models.

4. Keep refining

Your next message is the next turn of the same agent on the same document. For small changes it edits surgically (one exact match replaced, everything else untouched) rather than rewriting the whole document — so "make the header blue" won't scramble the section you already liked.

"Move the pricing table to page 2"

"Turn the bar chart into a line chart and add Q4 data"

See Editing: by chat & in place for both ways to work with the document once it exists.

5. Export or share

When it's done, ask the agent to export:

"Export this as a PDF"

The download link appears in chat and expires after 24 hours — the document itself stays saved in your artifact list forever. You can also share it with a specific person or via a public link. See Exporting to PDF and Sharing & managing artifacts.

Next steps

• Editing: by chat & in place — the two editing surfaces in detail.
• Sources & grounding — build from files you upload.
• Charts, diagrams & 3D — what the agent can put in a document beyond text.