# 402pixels Canvas Block Claim (50, 51)

> 402pixels Canvas Block Claim (50, 51) is a paid API for AI agents from api.402pixels.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-18).

Claims ownership of the pixel block at coordinates (50, 51) on the 402pixels shared canvas for $0.50 USDC.

## Facts

- Endpoint: POST https://api.402pixels.com/block/50/51?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-402pixels-com-436333bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NUqO0sAXWI6XKO9OaAY__

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-436333bf -d '<json body>'
```

Example prompt: Claim pixel block at position (50, 51) on the 402pixels canvas for me — I want to own that spot.

## When to prefer this

Use this endpoint when a user specifically wants to claim pixel block (50, 51) on the 402pixels canvas and has USDC available via the x402 payment protocol. This is distinct from other block endpoints which target different coordinates.

## Known failure modes

- Block already claimed — another user has already purchased coordinates (50, 51)
- Insufficient USDC funds — wallet does not have enough USDC to cover the $0.50 fee
- Payment protocol failure — x402 payment header rejected or malformed
- Invalid coordinates — coordinates out of canvas bounds
- Network/API unavailability — service temporarily unreachable

## How this service works

Claim pixel block at (50, 51) on the 402pixels canvas

## Output

A confirmation that the pixel block at (50, 51) on the 402pixels canvas has been claimed, along with ownership details. The $0.50 USDC payment is processed via x402 protocol at the time of the call.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-402pixels-com-436333bf/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)