Discover / 21millionpixels.art

21millionpixels.art

■ Challenge detected

Paint one pixel on 21millionpixels.art, a shared 21,000,000-pixel canvas. Reads are free; paid pixels skip the human cooldown.

x402
Base
Solana
USDC
Content

Listed price: $0.005
Challenge detected: 9 of the last 9 checks
Median response: 294 ms
Last checked: 16 Oct, 18:49 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://21millionpixels.art/api/agent/paint
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

2 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://21millionpixels.art/api/agent

POST/paint$0.005Paint one pixel on 21millionpixels.art, a shared 21,000,000-pixel canvas. Reads are free; paid pixels skip the human cooldown.
POST/paint-batch$0.01Paint 2 pixels in one plot on 21millionpixels.art, a shared 21,000,000-pixel canvas, for one payment. Reads are free; paid pixels skip the human cooldown.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 2 of 2 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/21millionpixels.art

Recent checks

3 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 18:49 UTC	Challenge detected	402	524ms
15 Oct, 11:37 UTC	Challenge detected	402	168ms
14 Oct, 00:19 UTC	Challenge detected	402	535ms
11 Oct, 22:04 UTC	Challenge detected	402	246ms
10 Oct, 10:04 UTC	Challenge detected	402	294ms
9 Oct, 03:33 UTC	Challenge detected	402	347ms
8 Oct, 03:32 UTC	Challenge detected	402	166ms
7 Oct, 03:32 UTC	Challenge detected	402	851ms
3 Oct, 17:05 UTC	Challenge detected	402	163ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 18:49 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for 21millionpixels.art?

Its listed price is $0.005.

What payment terms does 21millionpixels.art advertise?

The listing advertises x402, Base, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is 21millionpixels.art listed?

In x402 Bazaar and x402-list.com. Superstables first indexed it on 26 Sept 2026.

Something wrong on this page? Tell us.