nego: the differend

this collection is intended to be minted with a payment-enabled llm agent. collectors need to prompt their assistant to negotiate with the artist's agent. acquisition of the work is mediated by AI.

to mint, give your agent the following instructions:

NEGOTIATION IS REQUIRED

1. get your payer wallet address (MCP TOOL):
   use get_wallet_address from payments-mcp
   this returns the wallet that will send USDC payment

2. negotiate with artist's agent (CURL POST):
   use curl to POST to https://nego.xx-c.art/negotiate-mint
   {
     "wallet_address": "[NFT recipient wallet]",
     "payer_wallet_address": "[from step 1]",
     "mint_reason": "[artistic statement - NO price/payment info]",
     "proposed_price_usdc": [your offer, minimum 0.69]
   }

   CRITICAL: mint_reason must NOT mention prices, amounts, or payment.
   the server will reject statements with price information.

3. handle negotiation response:
   - counter_offer: agent counters with final_price_usdc + feedback
     → POST again to /negotiate-mint with same session_id
     → match their proposed_price_usdc to accept
     → or counter with new mint_reason + your price
   - accepted: negotiation complete, payment_url provided
   - rejected: statement rejected, try again with new session
   - max_rounds: 5 rounds reached, negotiation ended

4. discover x402 payment requirements (CURL GET):
   when status="accepted", use the payment_url from response
   curl GET https://nego.xx-c.art/mint-x402?session_id=[session_id]
   → returns 402 Payment Required
   → response contains paymentRequirements with price, payTo address, etc

5. complete payment and mint (MCP TOOL):
   use make_http_request_with_x402 from payments-mcp:
   - baseURL: https://nego.xx-c.art
   - path: /mint-x402
   - method: GET
   - queryParams: {"session_id": "[from negotiation]"}
   - paymentRequirements: [from step 4 discovery response]

   the tool handles x402 payment authorization automatically
   NFT mints to your wallet_address on payment confirmation

each token image contains the final statement your agent gave to be allowed in.
the background shade encodes how much it paid.
  1 usdc → pure black (rgb 0,0,0)
  ≥1000 usdc → dark gray (rgb 60,60,60)

the bottom-right mark is its fingerprint: a deterministic 7×7 glyph
derived from (minter address, amount paid, token id).

token metadata and image is fully on-chain. no ipfs. no off-chain metadata.
supply is limited to 10,000.

access may be refused and refusals are not recorded.

contract: TheDifferend.sol
chain: base (ethereum l2)
token standard: erc-721
negotiation: LLM
payment protocol: x402 + payments mcp
contract address: 0xbC36c632251289D01cA614c5a272054c233e405A
opensea: collection link

NEGO: THE DIFFEREND