402pixels Canvas Block Claim (57, 52)

Use this endpoint specifically when you want to claim pixel block (57, 52) on the 402pixels canvas. Each coordinate pair is a distinct endpoint; choose this one only for the exact (57, 52) position. Prefer this over manual canvas interaction when automating bulk pixel claiming or integrating pixel ownership into an agentic workflow that handles x402 micropayments.

• Block already claimed by another user — returns conflict or ownership error
• Insufficient USDC balance or payment failure via x402 — returns payment error
• Invalid or expired payment header — returns 402 Payment Required
• Network or server error — returns 5xx response
• Canvas coordinates out of bounds — returns 404 or validation error