Show HN: MCP Security Suite (opens in new tab)

My contention is that "lethal trifecta" is the AI equivalent of self-XSS. It's not apparent yet, because all this stuff is just months old, but a year from now we'll be floored by the fact that people just aimed Cursor or Claude Code at a prod database.

To my lights, the core security issue with tool/function calling in agents isn't MCP; it's context hygiene. Because people aren't writing their own agents, they're convinced that the single-visible-context-window idiom of tools like Cursor are just how these systems work. But a context is just a list of strings. You can have as any of them in an agent as you want.

Once you've got untrusted data hitting one context window, and sensitive tool calls isolated in another context window, the problem of securing the system isn't much different than it is with a traditional web application; some deterministic code that a human reviewed and pentested mediates between those contexts, transforming untrusted inputs into trustable commands for the sensitive context.

That's not a trivial task, but it's the same task as we do now when, for instance, we need to generate a PDF invoice in an invoicing application. Pentesters find vulnerabilities in those apps! But it's not a news story when it happens, so much.

† More a note for other people who might thing I'm being irritable. :)

We've talked to several massive Fortune 100 companies that have hundreds of models/workflows that have been developed but are stuck in purgatory because they can't get approved for production because of IT, Compliance, and Security Teams blocking them (for good reason!).

This MCP Security Analyzer was a natural thing that we would've had to build out regardless as we felt like it was table stakes for our Confidential Compute stack and we wanted to open-source it for everyone.

Would love to get in touch with you and chat because I think that there's a lot of areas where we trade notes.

My email is munam@ninesuns.io or you can drop your email and I'll shoot you a note! Thanks!

if you have some improvements around this space love to chat and collaborate!