A realtime full-stack framework with a Rust core

The database, transactions, and sync engine are Rust. Your schema, permissions, and server functions are TypeScript on top of them. Live queries, auth, an API, and React server rendering come with it. SQLite by default, Postgres when you need it.

Realtime without a subscription layer
Write a query and connected clients get the changes. No cache to invalidate, no websocket plumbing to keep alive.
A Rust data layer
The database, transactions, and sync are one Rust binary. Your TypeScript handler runs inside the transaction rather than across a network hop.
The whole backend
Typed schema, row-level permissions, auth, an API, file storage, and scheduled jobs. Nothing second to stand up and keep in sync.
Written to be written by an agent
A published authoring guide, an llms.txt, and an MCP server, so a coding agent writes Pylon correctly instead of guessing at it.

Not the right tool for a static site with no data, a single serverless function, or a codebase already committed to another full-stack framework you are not migrating.