Tool detail

paint

Paints one pixel at a given x,y with a palette color on the shared 21-million-pixel canvas.

Categories: Entertainment

Use when

paint a pixel on the 21millionpixels shared canvas
skip the human cooldown by paying per pixel

Not for

not for reading the canvas — reads are free elsewhere
palette indices 33-108 require the paying wallet to own a plot

Inputs

POST JSON body: x (0-4999, required), y (0-4199, required), color (0-108 palette index, required), username (optional, 3-20 chars)

Admitted input schema

{
  "type": "object",
  "properties": {
    "color": {
      "type": "integer",
      "minimum": 0,
      "maximum": 108,
      "description": "palette index; 1-32 for everyone, 33-108 for wallets that own a plot, 0 clears the tile. GET /api/info lists the hex values and which indices are retired"
    },
    "username": {
      "type": "string",
      "minLength": 3,
      "maxLength": 20,
      "pattern": "^[a-z0-9_-]+$",
      "description": "optional; the name this wallet paints under"
    },
    "x": {
      "type": "integer",
      "minimum": 0,
      "maximum": 4999,
      "description": "column, 0 at the left"
    },
    "y": {
      "type": "integer",
      "minimum": 0,
      "maximum": 4199,
      "description": "row, 0 at the top"
    }
  },
  "required": [
    "x",
    "y",
    "color"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://21millionpixels.art/api/agent/paint

Payment

Protocol: x402
Listed price: $0.005 USDC per pixel on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://21millionpixels.art/api/agent/paint
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z