Discover / badhttp.dev
badhttp.dev
□ No challenge detectedbadhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT-RESPONSE receipt and the transaction hash. Nothing else is sold; sibling endpoints under /402 misbehave on purpose.
- Listed price
- $0.01
- Challenge detected
- 0 of the last 20 checks
- Last checked
- 4 Oct, 05:05 UTC
- In our index since
- 8 Sept 2026
Endpoint
curl -i https://badhttp.dev/402/pay/base # 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/badhttp.dev
Recent checks
11 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.4 Oct 2026
All 20 checks
| When (UTC) | Result | HTTP | Response |
|---|---|---|---|
| 4 Oct, 05:05 UTC | No challenge detected | 200 | 89ms |
| 30 Sept, 15:34 UTC | No challenge detected | 200 | 204ms |
| 29 Sept, 15:33 UTC | No challenge detected | 200 | 134ms |
| 28 Sept, 15:32 UTC | No challenge detected | 200 | 134ms |
| 27 Sept, 15:27 UTC | No challenge detected | 200 | 157ms |
| 26 Sept, 15:27 UTC | No challenge detected | 200 | 83ms |
| 25 Sept, 15:29 UTC | No challenge detected | 200 | 112ms |
| 24 Sept, 15:29 UTC | No challenge detected | 200 | 121ms |
| 23 Sept, 15:29 UTC | No challenge detected | 200 | 99ms |
| 22 Sept, 15:27 UTC | No challenge detected | 200 | 156ms |
| 21 Sept, 15:26 UTC | No challenge detected | 200 | 98ms |
| 20 Sept, 15:26 UTC | No challenge detected | 200 | 383ms |
| 19 Sept, 15:25 UTC | No challenge detected | 200 | 105ms |
| 18 Sept, 18:32 UTC | No challenge detected | 200 | 109ms |
| 16 Sept, 08:36 UTC | No challenge detected | 200 | 142ms |
| 15 Sept, 08:41 UTC | No challenge detected | 200 | 60ms |
| 14 Sept, 05:07 UTC | No challenge detected | 200 | 52ms |
| 13 Sept, 08:19 UTC | No challenge detected | 200 | 157ms |
| 12 Sept, 10:57 UTC | No challenge detected | 200 | 58ms |
| 11 Sept, 16:36 UTC | No challenge detected | 200 | 151ms |
Questions
Did our last probe detect a payment challenge?
No. At our last probe on 4 Oct, 05:05 UTC, we detected no payment challenge.
What price is recorded for badhttp.dev?
Its listed price is $0.01.
What payment terms does badhttp.dev advertise?
The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.
Where is badhttp.dev listed?
In x402-list.com and x402 Bazaar. Superstables first indexed it on 8 Sept 2026.
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