Our Team
We built AgentGrail because we wanted it. Two founders who spent years grading cards by hand before building the AI-powered tools to do it better.
Why we built this
Every card collector has been there: you're looking at a raw card on eBay, trying to decide whether it's a PSA 9-10 candidate or a soft 8 that looks better in photos than it is. You're squinting at the corners, checking the centering ratio, wondering if that's a scratch or a print line on the surface.
We spent years doing that manually. Evan grades cards by hand. Donnie built a custom photography rig to capture the things standard photos hide. At some point we asked: why can't AI do this?
AgentGrail is the answer. A platform that brings professional-grade analysis to every eBay listing — not just the slabs you can afford to have graded.
— Donnie Laur & Evan Barnard, Founders
A software engineering manager and developer with 25+ years building production systems, he spent years grading cards by hand before building the tools he always wished existed. Designed and built the lightbox-v4 photography rig for controlled card imaging, trained the CLIP-based grading models on real graded slabs, and architected the waterfall identity system that powers the catalog.
Donnie Laur
Co-Founder & CTO
A lifelong sports card collector with deep hands-on grading experience. Evan brings the physical-grading perspective that keeps the AI honest — he's the first to spot when the model is overconfident on a surface defect the photo can't capture. His hands-on grading eye shapes the training-data quality bar.
Evan Barnard
Co-Founder & CPO
Our Methodology →
How we identify, price, and AI-grade cards — including known limitations.
Try AI Grading Free →
Search any card on eBay and get an instant BUY / PASS / REVIEW verdict.