Agents will fail.
We decide the blast radius.

Agents have the keys to your infrastructure. Without a runtime firewall, one compromised agent becomes the entry point for everything.

It's Happening.

OpenAI. Google. Microsoft. GitHub. All hijacked.

A firewall in the execution path

Traditional security was built for humans. It does not understand how agents chain together, share memory, or hand off tool access. Hlyn sits at every hop in your pipeline, checks what comes in, and controls what each agent can call, read, and send out.

Integrates in seconds, not weeks

Drop it in like it's hot.

from hlyn import defender

d = defender(api_key="sk_xxx", base_url="https://your-api-url")

user_input = get_user_message()


# one line. that's it.
if d.classify(user_input).is_injection:
    raise ValueError("Blocked.")

response = call_your_llm(user_input)