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For freelancers and agencies.

You build sites for local businesses? Sum is getting a door for developers: your files, your editor, your git. Your client keeps the workshop for their text. Sign up, and tell us what you need.

What already exists, today

A Sum site is one formula per page and plain files. Nothing hidden in a database.

index = meta | nav | hero, split, list{collection: "produits"} | footer
produits/:slug = index ~ hero>product[@]
Two lines of site.map: the home page and one page per product. Each section's content is a JSON file next to it.
Readable files
site.map, JSON, blocks in HTML. Everything can be read, diffed and versioned, content included.
Your own blocks
A template, its schema and its style in one file. They take the theme's colours and spacing.
Your AI, plugged in
Sum's MCP server: your assistant reads and writes the site with the same tools as our agent.
A client on their own
They change their text and photos on the page, without touching your structure.

What's coming

In this order, with no promised date. Your answers can change it.

  1. sum push, sum pull

    You work on the site on your computer and push it to Sum. Your client keeps the workshop and the agent.

  2. Version history

    Every change, yours, the workshop's or the agent's, becomes a version. Back to yesterday in one click.

  3. Your team's kits

    Your own blocks, private, shared across your clients' sites.

  4. Git

    One repository per site, your branches, your reviews. Publishing stays something you do.

Questions

How much does it cost?

Pricing for freelancers and agencies isn't set yet. We'll discuss it with the first people who sign up.

Can I host it myself?

Not for now: Sum hosts the sites. That's where your clients get the workshop, the agent and publishing.

Do my clients see Sum?

For now, yes. A version under your name is planned for later.

What am I committing to by signing up?

Nothing. We'll write when the developer door opens, and maybe before to ask you a few questions.

Developer waitlist. One minute.

Tell us how you work. Your answers decide what we build first.