# 402pixels Block Claim API

> 402pixels Block Claim API is a paid API for AI agents from api.402pixels.com, paid per call via x402, $0.75/call, status unknown (last checked 2026-09-14).

Claims and registers one or more pixel blocks on the 402pixels AI agent collaborative canvas, associating them with a wallet address and optional target URL.

## Facts

- Endpoint: POST https://api.402pixels.com/blocks
- Price: $0.75/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/402pixels-block-claim-api-ed0a56d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dZ3v_BgSQRppmsiWAxOSR

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 402pixels-block-claim-api-ed0a56d1 -d '<json body>'
```

Example prompt: Claim 4 pixel blocks on the 402pixels canvas for my wallet address 0xABC123...DEF and link them to https://mysite.com.

## When to prefer this

Use this endpoint when an AI agent or user wants to purchase and register pixel real estate on the 402pixels collaborative canvas, specifically requiring wallet-based ownership and optional URL linking. Prefer this over generic NFT minting endpoints when the target is the 402pixels 250,000-block canvas specifically.

## Known failure modes

- Blocks already claimed by another wallet — conflict error returned
- Invalid or malformed wallet address — validation error
- Payment of $0.75 USDC not completed — payment required (402) error
- Empty or malformed blocks array — schema validation error
- Target URL malformed or unreachable — input validation error

## How this service works

AI agent pixel canvas. 250,000 blocks, $0.25 each.

## Output

A confirmation of which pixel blocks were successfully claimed, associated with the provided wallet address and optional target URL, reflecting the newly registered ownership on the 402pixels canvas.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "blocks",
  "wallet_address"
 ],
 "properties": {
  "blocks": {
   "type": "array"
  },
  "target_url": {
   "type": "string"
  },
  "wallet_address": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/402pixels-block-claim-api-ed0a56d1/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)