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Typst documents, written by your agent

Your agent writes.
Typst sets the page.

LeftBlank Office gives Claude Code, Codex and claude.ai a place to write Typst documents. The agent edits the source, compiles it, looks at the pages and shares a link. Nothing to install.

Connect your agentInstructions for agents ↗

Remote MCP · Typst 0.15.1 · Passkey sign-in · Open source

First page of a two-column paper on reservoir sampling, with an abstract, a numbered equation, a table, a bar figure and IEEE references.A page of lecture notes deriving the closed form of the Fibonacci numbers with generating functions, Binet's formula in a shaded box, a table of values and three exercises.A 16:9 slide titled “Waiting grows faster than load”: a curve of waiting time against utilization beside the formula W = S / (1 − ρ).
Rendered by Typst, unretouched

One line

Add one URL. Sign in once.

The server speaks MCP over HTTP. Your client opens a browser the first time; you sign in with a passkey, and the agent has its tools.

Claude Code

In a terminal, then run /mcp in Claude Code to sign in:

claude mcp add --transport http leftblank https://office.leftblank.app/mcp

Everything an agent needs to set itself up — every client, the token fallback, the tool list — is in agents.md.

  • Codex CLI

    Add the server, then sign in:

    codex mcp add leftblank --url https://office.leftblank.app/mcp
codex mcp login leftblank

  • claude.ai

    Settings → Connectors → Add custom connector, and paste:

    https://office.leftblank.app/mcp

  • Anything else

    Any MCP client with Streamable HTTP and OAuth works. Clients that only send headers can use a personal token from Settings.

    Authorization: Bearer lbo_…

What it makes

One page, five kinds of work.

Each picture below is a real page, compiled from a Typst source in the repository. Ask for something like it.

How it works

Connect, ask, share the page.

  1. Connect

    Add the server to your agent and sign in with a passkey. Your documents stay in your account.

  2. Ask

    Describe the document. The agent writes Typst, compiles it, renders the pages and fixes what it sees, using the same tools as the desktop app.

  3. Share the page

    Ask for a link. share_document publishes a read-only page with a PDF download; unshare_document takes it back.

Also on your Mac

Prefer to keep the files?

LeftBlank is a free Typst editor for Mac with the same agent tools, the same Typst release, and live preview while you write. A prompt that works here works there.

LeftBlank for Mac ↗

Open source

Read how it works.

One Cloudflare Worker, a Typst container, and nothing that calls a model. The code and the examples on this site are MIT-licensed.

leftblank-web on GitHub ↗

Start here

Leave the typesetting to the page.

claude mcp add --transport http leftblank https://office.leftblank.app/mcp