Endpoint · market dataGETcollectablespulse.theaslangroupllc.com /api/collect/value ?grade=%27PSA+10%27&item=%271952+Topps+Mickey+Mantle%27
Collectible value & price check: trading card value, graded card (PSA/BGS/CGC) price, coin value, comic & vinyl record price.
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Collectible value & price check: trading card value, graded card (PSA/BGS/CGC) price, coin value, comic & vinyl record price. Returns current market value by grade and condition with recent sold comparables (eBay/Discogs) for any item: cards, coins, comics, watches, sneakers, vinyl. Worldwide. For collector and investor agents.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.10 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://collectablespulse.theaslangroupllc.com/api/collect/value?grade=%27PSA+10%27&item=%271952+Topps+Mickey+Mantle%27
Seen
first 35 days ago · last 17 hr ago
64 free handshakes
Payment
Pays through
x402
Offered on?
algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, Polygon, eip155:143, eip155:196, Arbitrum, eip155:480, eip155:56, Base USDC, eip155:999, Solana, xrpl:0
Listed on?
Polygon, Arbitrum, Base, Solana
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.733 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.267: 0.067 uncertain ? + 0.200 short ? · 0.067 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.888 | 0.533 | 0 | −0.067 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.733 | gap to 1.000 = 0.267 · 0.200 short · 0.067 uncertain | 0.733 | −0.200 | −0.067 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.888 liveness
+ 0.200 × 1.000 price stability
= 0.733 → UNRATED: 55 of 30 paid calls weights 2026.09.6 · 55 samples · seed cap_01M1A5AFACTRSWN55P66F8EGD3|2026-09-04T23:27:51.114Z|2026.09.6
Verify it yourself
npx teppi-check https://collectablespulse.theaslangroupllc.com/api/collect/value?grade=%27PSA+10%27&item=%271952+Topps+Mickey+Mantle%27curl -s https://api.teppi.xyz/v1/trust/cap_01M1A5AFACTRSWN55P66F8EGD3