Course / Level 0
Level 0
Reachable
An agent can operationally use your site at all.
Level 0 is the floor everything else stands on. Before an agent can find you, read you, or act on you, it has to be able to reach you on a non-interactive path — secure transport, real uptime, response times that don't time it out, and no challenge pages that silently block it. None of this is agent-specific; it's the operational hygiene a modern site already needs, made explicit so the levels above it have something solid to build on.
This level is the free sample of the course. Every lesson here is public — no account, no payment — so you can see exactly how the rest is taught before deciding whether to enroll.
5 steps in this level
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Step 1
Transport security
HTTPS everywhere, a valid certificate, and TLS 1.2 or better — the non-negotiable entry condition for any agent traffic.
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Step 2
Availability & performance
Real uptime and Core Web Vitals that hold up under non-browser clients, so agents don't give up mid-request.
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Step 3
Baseline security headers
The minimal hardening headers that signal a competently-run origin without breaking machine clients.
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Step 4
Don't block the agent path
CORS support, and making sure CAPTCHAs and JS challenges don't categorically lock verified agents out.
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Step 5
Recap
What changed, why it matters, and how to package this level into a service you can sell.