GrailBot started with a simple problem: the cards we wanted kept selling while we weren't looking. So we built a bot that never stops looking.
If you collect, you know the feeling. The card you've been hunting for months gets listed at 2am, sells as a Buy It Now before breakfast, or sits in an auction with the player's name spelled wrong so your saved search never catches it.
Saved searches send you a flood of listings with no way to tell a real grail from base-card filler. Checking by hand works until you have a job, a family, or more than one player you care about.
GrailBot is the tool we wanted for ourselves. It does the boring part of the hunt, which is searching, sorting, and remembering. You get to do the fun part: deciding what to chase.
Your searches run on eBay around the clock — including the misspelled titles a normal search never finds.
Every listing gets a GrailScore from 0–100 based on rarity, grade, player or character, and price.
The best cards land on your real eBay watchlist, so eBay's own alerts remind you before they end.
GrailSense picks up on what you collect and surfaces cards you didn't think to search for.
Sports cards, Pokémon, Magic: The Gathering, Yu-Gi-Oh! and One Piece, all in one place. See how it works →
GrailBot never bids, buys, or sells for you. It finds and watches. Every decision to spend money stays yours.
A score without reasons is a guess. GrailScore shows what pushed a card up or down, so you can check our work.
Listing data comes from eBay's official Developer APIs. No scraping, and we never touch your eBay password.
GrailBot gets better every week, and we write down what changed. Read it in the public changelog.
Questions, feature ideas, or a card GrailBot missed? A real person reads every email.
Set up your first search in about a minute. Free to start, no credit card required.
Start for free →