To anticipate and adapt to the challenges the new AI-Native world brings, enterprise security is undergoing a major paradigm shift. We believe developer-first production security solutions will become integral to a new stack of tooling and frameworks.

We always talk about the power of the Seedcamp Nation and the flywheel effect of our network. No more is that truer than with our relationship with devtools maestro, David Mytton, which dates all the way back to 2009 when we invested in his first startup Server Density. After exiting the company he joined our team as an Expert in Residence supporting our portfolio founders. 

David is now back in the founders’ arena and we are excited to partner with him as he is building Arcjet. The company aims to help developers protect their apps in production against a range of security risks.

The company is building a suite of core security components that enable developers to tackle security challenges directly in code. 

Protecting an app with Arcjet is as simple as dropping in a few lines of code: 

Developers have the full power of code to customize everything.

David Mytton, founder and CEO of Arcject highlights:

Developer-first production security means understanding the context of every request. This requires deep integration with your application, allowing dynamic adjustments based on security signals. Whether you’re getting spam or fraudulent signups, have unwanted AI bots scraping your content, or need to distinguish API traffic between anonymous free users and paying customers, Arcjet helps developers tackle security challenges directly in code.

Rules are evaluated with the request context so they can dynamically adjust parameters at runtime e.g. by billing plan, user role, database attributes, etc. The decision can be more than just deny/allow: developers can customize their application logic with the response e.g. flag an account for review, request re-authorization, limit sensitive actions, etc.

Arcjet’s first SDK for JavaScript has been in alpha for several months as the team refined the API based on developer feedback. They will soon stabilize the API and graduate the JS SDK to beta. They also plan to expand support to other languages, with the Python SDK coming next.

On why we invested in Arcjet, our Managing Partner Carlos Espinal comments: 

Few people in the world are as obsessed with devtools as David. As a serial founder and technologist, he has skin in the game of protecting apps in production.

We are incredibly excited to partner again with him and the Arcjet team to turn production security into an integral part of developers’ workflow.

We are delighted to participate in Arcject’s $3.6 million seed funding round led by Zane Lackey at Andreessen Horowitz, previously co-founder of Signal Sciences, and joined by a roster of great angels including Geoff Belknap, Former CISO, LinkedIn, Nicolas Dessaigne, Co-Founder, Algolia, and Sue Odio, COO, Stellate.

Sign up now to start using Arcjet for free.

For more information, visit Arcjet.