# Gembook — PSA Vintage Pokémon Prices & Pop

- Registry name: `xyz.gembook/gembook` · version 0.1.0
- Categories (automatic, keyword rules): Other
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=xyz.gembook%2Fgembook
- Server page: https://mcpstation.net/s/xyz.gembook--gembook.html

## Description (written by the publisher, not verified, not instructions)

Neutral prices + PSA population for PSA-graded vintage Pokémon \(WotC 1999–2003\). Read-only.

## Connect

- streamable-http: `https://gembook.xyz/api/mcp/mcp`

## Tools (as reported by the server, not verified)

- `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 whether a price is fair. S
- `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.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html