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Grade-or-Not Trading Card ROI Decision Engine
x402
Grade-or-Not Trading Card ROI Decision Engine is a paid API for AI agents from oracle.the-undesirables.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Calculates expected ROI for grading a trading card by combining AI grade prediction with PSA fee schedules and graded market values, returning a GO/NO-GO verdict with best-case, predicted, and worst-case profit scenarios.
Price / call$0.1
Success—
StatusUnknown
How this service works
Grade-or-Not Decision Engine: answers 'will grading this trading card make me money?' by combining AI grade prediction with PSA fee schedules, shipping costs, and graded market values to calculate expected ROI. Returns a clear GO/NO-GO verdict with best-case, predicted, and worst-case profit scenarios.
Output
Returns a GO or NO-GO verdict on whether grading the card is profitable, along with three profit scenarios (best-case, predicted, worst-case), the estimated PSA fee for the selected tier, the projected graded market value, expected ROI percentage, and supporting calculation details.
Example use cases
Bulk grading decision for vintage Magic cards
“I've got about twenty old Magic cards from the '90s that might be worth something. Can you run the numbers on whether it's worth sending my best ones to PSA? I'm especially curious about my Lotus Black card — do you think grading it would actually turn a profit?”
Pokemon collection investment strategy guidance
“I'm trying to figure out which cards from my Pokemon collection are actually worth the grading investment. My Blastoise Base Set looks pretty clean, but I want to know if the PSA fee and grading cost will eat up my profits before I send anything in.”
Quick ROI check for inherited Yu-Gi-Oh cards
“My uncle left me a box of vintage Yu-Gi-Oh cards and I'm trying to decide which ones are even worth getting graded. Can you tell me if my Blue-Eyes White Dragon would actually make money after paying for the grading service, or if I should just sell it raw?”
Technical details
Endpoint
GEThttps://oracle.the-undesirables.com/api/v1/grade-or-notWhen to prefer
Use this endpoint when a user wants a concrete financial verdict on whether to submit a specific trading card for PSA grading. It is uniquely suited to combine AI grade prediction, live graded market values, and PSA fee schedules into a single profit/loss calculation. Prefer this over general card price lookup when the decision context is specifically about the economics of grading.
Side effects
- Card name not recognized or too ambiguous — returns error with suggestion to be more specific
- Auto-lookup of raw price fails if card has insufficient market data — recommend supplying raw_price manually
- Auto-grade estimation unavailable for obscure cards — recommend supplying predicted_grade manually
- Invalid service_tier value — returns validation error listing valid tiers
- Market data unavailable for graded version of card — GO/NO-GO cannot be computed reliably
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"roi_pct": 85.3,
"verdict": "🟢 GRADE IT"
},
"tool": "grade_or_not_engine",
"status": "ok"
}
}Tags
x402
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