It’s very easy to use, with a generous free tier and an excellent dashboard that makes everything straightforward to manage.

What I like most about Arcjet is how easy it makes it to integrate security features into an application. The rate-limiting feature was especially useful because it let me protect my API from excessive requests by automatically rejecting repeated calls within a defined time window. It was simple to configure, and the documentation helped keep the implementation process smooth. The main downside I ran into was during development. Because I was constantly testing and making frequent API calls, the rate limiting would often end up blocking my own requests. To make development easier, I had to raise the limit or temporarily disable rate limiting in my development environment. That said, it wasn’t a problem in production, where it worked exactly as intended and did a good job protecting my API from abuse.

I like that Arcjet basically acts as a service. Initially, it was a bit difficult to get my agents to incorporate it correctly due to some configuration issues, but once I had the patterns in the repo, it started consuming it as a service smoothly. The agents just needed some system prompting and better understanding of TypeScript. It was quick to use, and I think it's great, especially if you're building with Vercel. I find it a very easy thing to reach for.