Discover / nbx4.dev

nbx4.dev

■ Challenge detected

Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.02 USDC via x402. Not a security audit.

Listed price
$0.02
Challenge detected
3 of the last 3 checks
Median response
291 ms
Last checked
21 Oct, 15:20 UTC
In our index since
19 Oct 2026

Endpoint

curl -i https://nbx4.dev/v1/report
# 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 Bazaar

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

  • GEThttps://nbx4.dev/v1/report$0.02Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.02 USDC via x402. Not a security audit.

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/nbx4.dev

Recent checks

19 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.21 Oct 2026
All 3 checks
When (UTC)ResultHTTPResponse
21 Oct, 15:20 UTCChallenge detected402604ms
20 Oct, 09:20 UTCChallenge detected402285ms
19 Oct, 00:23 UTCChallenge detected402291ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 15:20 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 nbx4.dev?

Its listed price is $0.02.

What payment terms does nbx4.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 nbx4.dev listed?

In x402 Bazaar. Superstables first indexed it on 19 Oct 2026.

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