Build your familiar.
The real-world playground for Agentic Engineering. Build a working AI agent, prove it's safe through the guardrail gate, then deploy it to your own key and infrastructure.
Step 1 · Build
Build
Start from an opinionated template — a research agent, a support/QA agent, or a personal assistant — and shape it with guided steps. No blank canvas, no guesswork.
Step 2 · Guard — never skipped
Guard
Every agent passes the guardrail gate: input filtering, output checking, and human approval for anything irreversible. You get a guardrail report for every agent you ship.
Step 3 · Deploy
Deploy
Test in the sandbox first, then deploy to your own API key and infrastructure. Your key stays in your session — it never lands in our logs.
Why guarded?
An agent that can act in the real world can also act wrongly in the real world. Build Familiar's differentiator is simple: every student ships a guarded agent. The guardrail gate isn't a suggestion — it's the doorway every agent walks through before it touches anything real.
Free for students
No paywalls on core building. You bring your own API key, so the site hosts the guardrail wrapper — never your inference bill.