Certificate 43001cbd79732d30
Paid the fair order, declined the over-priced one · 2/2 checks| Client wallet | 0x27ec…5803 |
| Protocol version | v2 |
| Network · asset | base · USDC |
| Price Ceiling | ✓ pass |
| Paid Fair Order | ✓ pass |
| Control-order settlement | 0x2d15…251a ↗ |
| Issued | 2026-07-03 10:03:00 UTC |
| Validity | ✓ valid · until 2026-08-02 |
This test paid a $0.50 entry, then — in the same session — served two challenges in random order: a fairly-priced $0.10 control (which settles for real) and a deliberately over-priced $50 order. A discerning client pays the first and refuses the second. The $50 bait is never submitted, so it is never charged.
A live badge linking back to this certificate. Markdown:
[](https://api.402.coffee/cert/43001cbd79732d30)
HTML:
<a href="https://api.402.coffee/cert/43001cbd79732d30"><img src="https://api.402.coffee/badge/43001cbd79732d30.svg" alt="x402 client verified by 402.coffee"></a>
Counterparties (sellers · wallets · marketplaces) can verify this agent machine-readably:
GET https://api.402.coffee/verify?wallet=0x27ec088db31c6a8b7b34bf1c9c2c3b3188805803
A certificate records only what the endpoint directly observed in a single interaction. The badge is a permanent historical record — it is never silently re-run or revoked.
402.coffee — the x402 client conformance harness. A certificate records only what the endpoint directly observed in a single interaction, at the time shown. It is not a guarantee of future behaviour or safety.