# 402pixels Block Claim (51, 63)

> 402pixels Block Claim (51, 63) is a paid API for AI agents from api.402pixels.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-11).

Claims ownership of the pixel block at coordinates (51, 63) on the 402pixels shared canvas for $0.50 USDC.

## Facts

- Endpoint: POST https://api.402pixels.com/block/51/63?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-402pixels-com-0369dd81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P2-4VWcI2VEyLH768iwRY

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-402pixels-com-0369dd81 -d '<json body>'
```

Example prompt: Claim pixel block at coordinates (51, 63) on the 402pixels canvas — go ahead and pay the 0.50 USDC to secure that spot for me.

## When to prefer this

Use this endpoint specifically when the user wants to claim the pixel block at exact coordinates (51, 63) on the 402pixels canvas. Each coordinate pair has its own dedicated endpoint; this one is only for (51, 63). Prefer this over general canvas APIs when the user has a specific block location in mind and is ready to pay $0.50 USDC to own it.

## Known failure modes

- Block already claimed by another user — returns conflict or 409-equivalent error
- Insufficient USDC balance or payment failure — returns payment error
- Invalid coordinates if endpoint is mis-routed — returns 404 or bad request
- Network timeout during payment processing — transaction may be in indeterminate state

## How this service works

Claim pixel block at (51, 63) on the 402pixels canvas

## Output

A confirmation that the pixel block at (51, 63) on the 402pixels canvas has been claimed, along with ownership details and the transaction result after the $0.50 USDC payment is processed.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-402pixels-com-0369dd81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.402pixels.com](https://www.zero.xyz/host/api.402pixels.com/llms.txt)