frontmatter core
The data layer between Astro and real CMS.
Turns Astro, Markdown and YAML into clean, editable content models.
Build-time only. No runtime. No lock-in.
Modern frontends are fast.
CMS are powerful.
But they don’t speak the same language.
Astro components use props
CMS use data models
Someone has to translate.
Frontmatter is that translation.
Input
- .astro
- .md
- .yaml
Frontmatter Core
- Scans
- Extracts
- Builds a typed content model
Output
- JSON IR
- CMS adapters
- Static or dynamic
The IR
Frontmatter produces a stable Intermediate Representation.
{
"pages": [
{
"route": "/",
"fields": ["title", "subtitle"]
}
],
"datasets": ["works", "posts"]
}Open by design
Frontmatter Core is MIT licensed.
You can build anything on top of it.
Grav, Liquid, PHP, Headless CMS — adapters plug into the same core.
This is just the core.
Paid adapters and tools will be built on top of it.