Grailmeter for AI

Plug our prices into Claude, ChatGPT or any AI app that takes connectors. Then just ask. It's free, needs no account, and only reads public prices.

1. Copy this link

https://grailmeter.com/mcp

2. Add it as a connector

Claude: Settings, then Connectors, then Add custom connector. Paste the link, name it Grailmeter.
ChatGPT: Settings, then Connectors (developer mode), then Create. Paste the link.
Other apps: any app that speaks MCP over HTTP. No key needed.

3. Ask about cards

“What's Moonbreon worth raw in the UK, and is it in the Buy zone?”“Which Prismatic Evolutions cards are worth the most?”“Show me 10 cards in the Sell zone right now.”“How much is a 151 Elite Trainer Box going for?”

What it can look up

Search cards by name, nickname, number or set.
Card prices: UK sold prices (raw and graded, with how many sales), plus Cardmarket and TCGplayer in pounds, for every version.
Buy and Sell zones: cards cheaper or pricier than their own usual price, with the numbers behind it.
Sets: what one of every card costs, and the chase cards.
Sealed: UK prices for Elite Trainer Boxes, booster boxes and collections.

Data, not financial advice. Prices update every morning.