402pixels Block Claim (58, 51)

Use this endpoint when you specifically want to claim the pixel block at grid position (58, 51) on the 402pixels canvas. Each coordinate pair is a unique endpoint; use the matching coordinate endpoint for other positions. Ideal for agents participating in the 402pixels collaborative canvas experience using x402 micropayments.

• Block already claimed by another user — returns conflict/unavailable error
• Insufficient USDC balance or payment failure — returns payment error
• Invalid or expired x402 payment header — returns 402 Payment Required
• Network timeout during claim — block state may be uncertain
• Block coordinates out of canvas bounds — returns validation error