402pixels Block Claim (57, 59)

Use this endpoint specifically when you need to claim exactly block (57, 59) on the 402pixels canvas. Each block has its own endpoint, so choose the sibling endpoint corresponding to the exact coordinates you want to own. Prefer this over manual canvas interaction when automating pixel purchases or building agents that acquire canvas real estate programmatically via the x402 micropayment protocol.

• Block already claimed by another user — returns conflict or already-owned error
• Insufficient USDC payment or payment protocol failure — returns 402 Payment Required
• Invalid or expired x402 payment header — returns authentication/payment error
• Network or canvas service unavailability — returns 5xx error
• Coordinates out of canvas bounds — returns 400 bad request (though these coordinates appear valid)