Gembook — PSA Vintage Pokémon Prices & Pop

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "gembook-psa-vintage-pokemon-prices-pop": {
      "type": "http",
      "url": "https://gembook.xyz/api/mcp/mcp"
    }
  }
}

3 tools

• lookup_card_price

  Get Gembook's fair-value estimate (USD) for a PSA-graded vintage Pokémon card (WotC era, Base Set through Skyridge, 1999–2003). 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…

• lookup_pop_report

  Get 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_summary

  Returns 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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