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Re:TCG Appraise

x402collectibles/trading-cards402 seen 2026-10-17

Pay-per-call endpoint from retcg. Price per call: $0.020 (USDC, x402).

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Proof

endpoint (shown as text, not a link, to avoid accidental calls): https://www.retcg.xyz/api/appraise/:id
“HTTP 402 + x402 v2 challenge: amount 20000 atomic units of USD Coin (= $0.02)”
source: www.retcg.xyz/api/appraise/:id

Details

Price per call
$0.020 (USDC, x402)
Provider
retcg
Protocol
x402 · USDC (Base)
Method
GET
Price basis
USDC amount in the unpaid HTTP 402 payment challenge (first accepted option)
Last probed
2026-10-17

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