Neutral prices + PSA population for PSA-graded vintage Pokémon (WotC 1999–2003). Read-only.
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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.
This tool takes no arguments.
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.
No arguments.
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {}
}Get Gembook's fair-value estimate (USD) for a PSA-graded vintage Pokémon card (WotC era, Base Set through Skyridge, 1999–2003). Returns fair value, range, confidence tier, comp count, and the card page URL. Call this when a user asks what a vintage Pokémon card is worth or whether a price is fair. Scope is PSA-graded vintage Pokémon ONLY — other graders, eras, or TCGs are out of scope.
| Argument | Type | Description |
|---|---|---|
| grade | integer | PSA grade 1–10 |
| variant | string | Edition/variant to narrow, e.g. '1st Edition', 'Shadowless', 'Unlimited', 'Reverse Holo' |
| set_name | string | Set name to narrow, e.g. 'Base', 'Jungle', 'Neo Genesis' |
| card_name* | string | Card name, e.g. 'Charizard' |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"card_name"
],
"properties": {
"grade": {
"type": "integer",
"maximum": 10,
"minimum": 1,
"description": "PSA grade 1–10"
},
"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'"
}
}
}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).
| Argument | Type | Description |
|---|---|---|
| variant | string | Edition/variant to narrow, e.g. '1st Edition', 'Shadowless', 'Unlimited', 'Reverse Holo' |
| set_name | string | Set name to narrow, e.g. 'Base' |
| card_name* | string | Card name, e.g. 'Blastoise' |
{
"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'"
}
}
}