The data is all public, scattered across a bunch of gov portals - I built the platform a couple years back as an aggregator. I've been using the MCP side to keep an eye on contract/grant opportunities for my services business and our clients which I'm finding (not surprisingly) more effective than navigating the traditional UI.
Data's under OGL and the EU TED reuse notice; not affiliated with any procurement body - free to use, you just need an account.
For any SMBs I hope it helps find you an opportunity or two!