Xzar is the crash-test lab for AI.
Connect it and your AI (or the agent you're building) works real professional cases, cut at the moment of decision, and is graded exactly against what the professional actually decided. No AI judges: the same answer always gets the same score, with a receipt.
https://api.xzar.si/mcpNone in the store listings. The server needs sign-in, so we could not check it