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Gembook — PSA Vintage Pokémon Prices & Pop

xyz.gembook/gembook
Commerce & Retail Daten & Analytik Öffentlich und erreichbar MCP 2025-11-25

Was dieses MCP kann

Provides fair-value estimates and PSA population reports for PSA-graded vintage Pokémon cards, along with valuation methodology.

Funktionen

Tools

3 Tools
get_methodology_summary
How Gembook computes card prices
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.
Nur Lesen Idempotent
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'properties': {}}
lookup_card_price
Look up a PSA-graded vintage Pokémon card's market value
Get Gembook's fair-value estimate (USD) for a PSA-graded vintage Pokémon card (WotC era, Base Set through Skyridge, 1999–2003). Returns fair value, range, confidence tier, comp count, and the card page URL. Call this when a user asks what a vintage Pokémon card is worth or whether a price is fair. Scope is PSA-graded vintage Pokémon ONLY — other graders, eras, or TCGs are out of scope.
Nur Lesen Idempotent
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['card_name'], 'properties': {'grade': {'type': 'integer', 'maximum': 10, 'minimum': 1, 'description': 'PSA grade 1â\x80\x9310'}, 'variant': {'type': 'string', 'description': "Edition/variant to narrow, e.g. '1st Edition', 'Shadowless', 'Unlimited', 'Reverse Holo'"}, 'set_name': {'type': 'string', 'description': "Set name to narrow, e.g. 'Base', 'Jungle', 'Neo Genesis'"}, 'card_name': {'type': 'string', 'minLength': 2, 'description': "Card name, e.g. 'Charizard'"}}}
lookup_pop_report
Look up a card's PSA population 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).
Nur Lesen Idempotent
Eingabeschema 
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['card_name'], 'properties': {'variant': {'type': 'string', 'description': "Edition/variant to narrow, e.g. '1st Edition', 'Shadowless', 'Unlimited', 'Reverse Holo'"}, 'set_name': {'type': 'string', 'description': "Set name to narrow, e.g. 'Base'"}, 'card_name': {'type': 'string', 'minLength': 2, 'description': "Card name, e.g. 'Blastoise'"}}}
Verlauf

Letzte Tool-Änderungen

Hinzugefügt
get_methodology_summary
17. September 2026 12:55
Hinzugefügt
lookup_pop_report
17. September 2026 12:55
Hinzugefügt
lookup_card_price
17. September 2026 12:55
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