Gembook — PSA Vintage Pokémon Prices & Pop
Neutral prices + PSA population for PSA-graded vintage Pokémon (WotC 1999–2003). Read-only.
Connect it
Settings → Connectors → Add custom connector
URL: https://gembook.xyz/api/mcp/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://gembook.xyz/api/mcp/mcp{
"mcpServers": {
"gembook": {
"url": "https://gembook.xyz/api/mcp/mcp"
}
}
}claude mcp add --transport http gembook https://gembook.xyz/api/mcp/mcp{
"servers": {
"gembook": {
"type": "http",
"url": "https://gembook.xyz/api/mcp/mcp"
}
}
}3 tools, verified live
lookup_card_priceread-onlyGet Gembook's fair-value estimate (USD) for a PSA-graded vintage Pokémon card (WotC era, Base Set through Skyridge, 1999â2003). Returns fair value, range, confidence tier, comp count, and the card page URL. Call this when a user asks what a vintage Pokémon card is worth or whether a price is fair. Scope is PSA-graded vintage Pokémon ONLY â other graders, eras, or TCGs are out of scope.
lookup_pop_reportread-onlyGet the PSA population (number of slabs graded per grade) for a vintage Pokémon card across all grades. Call this when a user asks how rare a PSA grade is for a card. Scope: PSA-graded vintage Pokémon (Base Set through Skyridge).
get_methodology_summaryread-onlyReturns a short summary of Gembook's valuation + trust methodology (what counts as a verified sale, confidence tiers, published error rates). Call this when a user asks how the prices are computed or whether they can be trusted.
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