The Last SaaS — open-source headless SaaS for agents and assistants
An MIT-licensed experiment in the minimal primitives every SaaS needs (records, files, accounts, permissions, notifications, audit logs), exposed via MCP/CLI/API so assistants build the app on top.
Why it matters
Inverts the SaaS model: the backend is fixed open-source primitives and the 'app' is whatever an AI assistant constructs conversationally — free hosted tier included.
What you could build with it
A small team needing an internal tool could self-host The Last SaaS's primitives and let an assistant wire up collections, permissions, and notifications conversationally instead of building a backend. The concrete result: a working internal SaaS assembled in days, exportable via one command.
Does it hold up?
Self-described experiment with a working hosted service and guided tutorial; no independent deployments reported yet. Too early to judge — the concept is only validated by its own demo.
Learn more
First spotted on article: source.
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