the402 endpoint detail

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library.forgemesh.io library-card

https://library.forgemesh.io/library-card

payable

Mints a soulbound Reader's Card NFT to the wallet that paid this call — a public-domain library patron credential on Base. One card per wallet: if this wallet already holds one, you get its existing patron number back, no duplicate mint. TESTNET ONLY for now (Base Sepolia); mainnet launches after final art confirm.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0x85df5380DEbe236AD6BF49dE788243924B080267
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
40 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:14.790Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Flibrary.forgemesh.io%2Flibrary-card"