Cloudflare Application Security and Performance vs. Arcjet

Cloudflare is the connectivity cloud for the "everywhere world," on a mission to help build a better Internet. We provide a unified platform of networking, security, and developer services delivered from a single, intelligent global network that spans hundreds of cities in over 125 countries. This empowers organizations of all sizes, from small businesses to the world's largest enterprises, to make their employees, applications, and networks faster and more secure everywhere, while significantly reducing complexity and cost.

Arcjet is runtime security for AI agents. It puts the decision where the action is: block prompt injection, stop PII leaks, block bots, and add guardrails to tools, APIs, and database calls. Identity tells you who is asking, but it cannot tell you what happens next. Arcjet runs inside the code that takes the action, so every agent action is observed in the run it belongs to, checked before it executes, and kept as evidence afterwards. Each check returns a decision your code acts on: allow, block, redact, or hold for review.