One stack.
Many surfaces.
Terminal, the Stacklumen Hub and Baselumen with its designer, the web tools inside Baselumen and the working surfaces inside the Hub, all designed to plug into the same workflow.
Stacklumen apps
Each app keeps its own. The Hub’s is Appearance → Canvas, which darkens the page and leaves the frame; Baselumen’s is a switch in the account menu.
The Hub opens Baselumen from the grid key on its bar; Baselumen lists Stacklumen in the account menu.
The products. One frame.
One plan for the agency covers all of it, and each one is a switch away from the others.
Terminal
AlphaThe site builder
A visual canvas over real HTML and CSS, four breakpoint layers you author, a CMS, and publishing to a live staging link.
Stacklumen Hub
AlphaThe workspace
The pipeline, clients, projects, notes, the team and billing in one place, with Terminal inside it.
Baselumen
AlphaComponents, templates and web tools
A component library in HTML + CSS, React, Vue and Svelte, whole-site templates, web tools with audit reports, Component Studio, Import, and Agents & MCP. In public alpha, with sign-in.
Baselumen designer
AlphaPrint-accurate brand work
Print-accurate artboards for business cards and brand assets, with a library of every design filed by client. Your AI agent connects over MCP to list, open and act on the workspace’s designs.
Web tools. Inside Baselumen.
Browser-based SEO, schema and accessibility tools with nothing to install, open to any signed-in Baselumen account during the public alpha. A few of them:
Colours
Presets
SEO + AEO Audit
AlphaAudit any URL in seconds
Paste a URL. Get back a graded report on title, meta, canonical, Open Graph, JSON-LD, heading structure, robots, sitemap and llms.txt: everything that decides whether you show up in search and answer engines.
Open Graph Preview
AlphaSee your link before you ship it
Paste a URL and see how its share card renders in the places links get posted. Spot the broken image before the launch post does.
JSON-LD Generator
AlphaSchema.org markup without the docs
Fill a form, copy the JSON. Organization, FAQ, Product, Article, BreadcrumbList: the schemas answer engines actually read.
Contrast Checker
AlphaWCAG AA and AAA in two colours
Paste a foreground and a background. Get the contrast ratio, the AA and AAA result for normal and large text, and the pair painted at four text sizes.
robots.txt + llms.txt
AlphaCrawler files, generated
Fill a form, get production-ready robots.txt and llms.txt, with allow rules for the major AI crawlers already written the way we use them.
Embed Sizer
AlphaWill it fit in 50KB?
Paste an embed. Get its real size, its minified size, and whether it fits inside a 50KB embed limit.
Inside the Hub. Working surfaces.
The parts of the Stacklumen Hub that clients and the team use day to day.
Your projects with Stacklumen
Sign in to openA direct line to the team
Chat with the team, browse sales materials, and keep track of your tasks and business details.
Notes
Sign in to openA keyboard-first task list
A notes-style list with keyboard-first input that syncs as you type, across your devices.
YourVision
AlphaProject intake, structured
Tell us about your project: goal, audience, constraints, timeline and budget. We come back with a written scope and a real number.
Suggest a tool.
We build Baselumen tools we would use ourselves. If you would use one we have not shipped yet, tell us. The ones with the most demand move up the list.