Discover / 402signal.com

402Signal

□ No challenge detected

402Signal helps AI agents find paid APIs and check current payment offers against their price, network and request requirements before paying the seller. A qualifying route costs $0.003 USDC; normal misses are free. Routing payments are supported on Base, Solana and Algorand. The seller's charge is separate.

x402
Base
Solana
USDC
Data

Challenge detected: 0 of the last 9 checks
Last checked: 16 Oct, 21:16 UTC
In our index since: 26 Sept 2026

Endpoint

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

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/402signal.com

Recent checks

2 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	Response
16 Oct, 21:16 UTC	No challenge detected	115ms
15 Oct, 14:11 UTC	No challenge detected	786ms
14 Oct, 05:00 UTC	No challenge detected	136ms
12 Oct, 10:53 UTC	No challenge detected	95ms
10 Oct, 15:44 UTC	No challenge detected	86ms
9 Oct, 09:34 UTC	No challenge detected	159ms
8 Oct, 03:32 UTC	No challenge detected	66ms
6 Oct, 21:30 UTC	No challenge detected	79ms
2 Oct, 17:03 UTC	No challenge detected	73ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 16 Oct, 21:16 UTC, we detected no payment challenge.

What payment terms does 402Signal advertise?

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

Where is 402Signal listed?

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

Something wrong on this page? Tell us.