Discover / x402.alexk.is

x402 LLM Gateway

■ Challenge detected

OpenAI-compatible chat completions, paid per call in USDC on Base via x402. Send a chat messages array and receive the assistant reply. $0.01 per call, no account and no API key.

x402
Base
USDC
AI

Challenge detected: 12 of the last 12 checks
Median response: 231 ms
Last checked: 17 Oct, 04:37 UTC
In our index since: 29 Sept 2026

Endpoint

curl -i https://x402.alexk.is
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

1 listed endpoints · on x402-list.com

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

GEThttps://x402.alexk.is/v1/chat/completions$0.01OpenAI-compatible chat completion. Send a chat-style messages array and receive the assistant reply. Use this when you need an LLM completion and can pay per call in USDC on Base via x402.

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

Showing 1 of 1 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/x402.alexk.is

Recent checks

29 Sept 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.17 Oct 2026

All 12 checks

When (UTC)	Result	HTTP	Response
17 Oct, 04:37 UTC	Challenge detected	200	436ms
16 Oct, 21:19 UTC	Challenge detected	402	215ms
15 Oct, 23:42 UTC	Challenge detected	200	325ms
14 Oct, 17:17 UTC	Challenge detected	200	120ms
14 Oct, 08:45 UTC	Challenge detected	402	329ms
13 Oct, 20:45 UTC	Challenge detected	200	203ms
11 Oct, 19:34 UTC	Challenge detected	200	236ms
10 Oct, 03:32 UTC	Challenge detected	200	186ms
8 Oct, 21:32 UTC	Challenge detected	200	251ms
7 Oct, 15:42 UTC	Challenge detected	200	159ms
6 Oct, 15:31 UTC	Challenge detected	200	226ms
29 Sept, 17:03 UTC	Challenge detected	200	398ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 04:37 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 payment terms does x402 LLM Gateway advertise?

The listing advertises x402, Base and USDC. Check the seller's current payment challenge and authentication requirements before paying.

Where is x402 LLM Gateway listed?

In x402-list.com. Superstables first indexed it on 29 Sept 2026.

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