Skills Are the New Code: How We Secure the Context Our Agents Consume, with Guy Podjarny (Tessl)

Guy Podjarny built Snyk into the company that taught developers to secure their dependencies. Now, with Tessl, he argues that agent skills have become a new unit of software, one that deserves the same rigor we give source code. Guy Podjarny, founder of Tessl and Snyk, joins us to explain why skills are the new code: context is the only layer that runs straight inside the model's reasoning loop, so it is effectively the programming language for models. We get into the new supply chain that follows (there are already 2 million skills in the open ecosystem, up from near zero last September), why a malicious or negligent skill is so hard to catch, why there's still no npm or PyPI for skills, and why enforcement is moving into the harness because the model cannot police its own context. Guy also makes the case that skills rot, so a skill you write today can be useless or harmful three months from now without a plan to maintain it.