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The Stacklumen platform is in public alphaSee the products

The toolkit behind every site we ship.

Baselumen is Stacklumen's workbench for web teams: a component library you copy into any project, whole-site templates that import into Terminal, and web tools that audit any URL for SEO, accessibility, speed and security. One app, one account.

Visit baselumen.com What's inside
Status
Public alpha
Inside
Components · Templates · Tools
Copy as
HTML + CSS, React, Vue, Svelte
Price
Free during the public alpha · Pro $24/mo after
The component library in Baselumen, drawn.

Components, templates, tools. One workspace.

The library, the templates and the tool bench share one shell and one sign-in, with Agents & MCP for the work you hand to an agent.

Components

Production sections with props, variants and clean classes. Copy one as HTML and CSS you can paste anywhere, as React, Vue or Svelte from the same source, or as a block that pastes straight into Terminal.

  • Design tokens theme every component
  • Component Studio, for composing your own
  • Import pins components to a Terminal site
Visit baselumen.com →

Templates

Whole-site templates, pages and a stylesheet together, that import into Terminal as ordinary elements you can take apart and make your own.

  • A whole site as one install
  • Opens in Terminal, ready to edit
  • Built from the same component library
How templates work →

Web tools

Converters and generators that run in the browser, and audits that take a URL — SEO and AEO, accessibility, speed, security headers, schema, landmarks — and hand back a report.

  • Reports you can hand to a client
  • History per site, so you can see a score move
  • Nothing to install
Open the tools →

Built on a few strong opinions.

Baselumen is deliberately narrow. Rather than be everything for everyone, it tries to be very good at the handful of things below.

Built from real client work

Every component started life inside a Stacklumen build that shipped. No speculative patterns — only the ones proved out under a deadline.

Built on SDF

Components follow the Stacklumen Development Framework: semantic HTML, a strict heading order, Schema.org hooks and an accessible baseline, so the library reads as one system.

Variables everywhere

Every colour, font, radius and spacing step is a CSS custom property. Override at the root, a section or a single instance — the cascade is the whole model.

Yours when you copy it

Once a component is in your project it is yours to change. No licence keys, no embed scripts, no badge, and no runtime to carry.

One plan, every app. Inside Terminal, too.

Baselumen is on your agency's Stacklumen plan, the same one that covers the Hub and Terminal. Free has the free component set and 10 tool runs a month. During the public alpha everything is free. The library also opens as a panel inside Terminal's designer: previews render live, and picking a component imports it into the page as ordinary elements you can take apart.

How Terminal works
Pro
$24/mo, or $20/mo billed yearly
Every component and template, full MCP and CLI access, and 200 tool runs a month. One editor.
Agency
$29.99/mo, or $24.99/mo billed yearly
Everything in Pro, with 1,000 tool runs a month per workspace, 3 editor seats and 2 workspaces.

Every plan covers every Stacklumen app. The full comparison is on the pricing page.

Build on the patterns we ship.

Browse the library, start from a template, or run an audit on a site you already have. Free during the public alpha · Pro $24/mo after.

Open Baselumen Read the docs
Made inTerminal
Made in Terminal