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CollectablesPulse Population Report
x402
CollectablesPulse Population Report is a paid API for AI agents from collectablespulse.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-15).
Returns grade scarcity and census analysis (PSA/PCGS/CGC population reports) for any graded collectible to support collector and investor decision-making.
Price / call$0.08
Success—
StatusUnknown
How this service works
Global collectibles market intelligence API. AI-synthesized valuations for sports cards, coins, comics, vinyl records, Pokémon/MTG/TCGs, sneakers, watches, signed memorabilia, and trading cards. Real-time sold comparables, PSA/CGC/PCGS grade premiums, population reports, storage and grading guidance. Amazon storage supplies, professional grading service links, and eBay/Goldin marketplace links included. All endpoints support any language via ?lang=. Pricing: $0.08–$0.20 USDC/call via x402 micropayment.
Output
Returns a structured breakdown of how many copies of the collectible exist at each grade level according to PSA, PCGS, or CGC census data, along with scarcity metrics indicating how rare top-grade examples are relative to the total graded population.
Example use cases
Example prompt
“Pull the population report for a PSA 10 1986 Fleer Michael Jordan rookie card — I want to know how many exist at each grade level and how scarce the top grades are compared to the total census.”
Technical details
Endpoint
GEThttps://collectablespulse.vercel.app/api/collect/populationWhen to prefer
Use this endpoint when an agent needs to assess the rarity or investment scarcity of a specific graded collectible by examining how many examples exist at each grade level. Ideal for collector or investor workflows where population data from PSA, PCGS, or CGC is needed to contextualize value, inform buying/selling decisions, or compare grade tiers. Prefer over general value endpoints when the primary question is about census counts and grade scarcity rather than market price.
Side effects
- Collectible not found in grading service census — returns empty or error if the item has no graded population
- Ambiguous item description — may return incorrect census if the collectible identifier is not specific enough
- Grading service data unavailability — census data may be stale or unavailable for niche items
- Missing grade specification — may return aggregate data if specific grade query is unclear
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| itemrequired | string | Collectible description (e.g. 1952 Topps Mickey Mantle) |
| lang | string | Response language (default en) |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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