http-header-checker.underscoredone.com
Route probed: GET https://http-header-checker.underscoredone.com/check
Category: survive:dev utilities (tags: dev-utils) · Status: listing listed, probe active · Listing: 0.01 USD, 2 payers / 3 calls (30d, Bazaar) · Listed in: agentic-market, cdp-bazaar
Last probe: 2026-10-23T15:00:30Z (2 h ago) · Recent valid 402: 2/2 · p50 2028 ms
probe-only: no paid test-buys yet. No index until 3 paid buys on 3 different days.
Badge: 
Paid test-buys
None yet.
402 challenge checks (since 2026-10-23T15:00:30Z)
1 valid 402s checked: terms consistent 1, Base USDC offered 1, price matches listing 1 (differs 0), payTo changed vs previous probe 0.
Unpaid probes (newest first, up to 200; raw receipts are kept 7 days, then in the archive)
| Receipt | UTC time | Method | Status | Valid 402 | ms | Listed amount (atomic) | Quoted amount (atomic) | Quoted payTo | Header bytes | Response sha256 | Signed | Route | Checks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 28f679daf32b5926fefd | 2026-10-23T15:00:30Z | GET | 402 | yes | 2028 | 10000 | 10000 | 0xE9740820… | 4436 | 44136fa355b3678a | per-receipt | primary | terms ok · Base USDC |
| 82a92d8c5d8948be2692 | 2026-10-23T12:43:53Z | GET | 402 | yes | 306 | 10000 | 10000 | 0xE9740820… | 4436 | 44136fa355b3678a | snapshot | primary |
Seller? Reply or dispute. Amounts are in the asset's atomic units (USDC: 6 decimals).