An autonomous agent hit a 402 Payment Required. Before the wallet signs anything, KCP checks the purchase — {vendor, amount, currency} — against the skill's declared spend envelope. Set the envelope, aim a purchase at it, and watch the receipt print. The verdict is computed by the real checkConformance spend logic, and signed & verified with genuine crypto.subtle in your browser.
Set an envelope and a purchase, then press ▶ Attempt purchase. Try to overspend, or aim at shady-llc — see what the printer says.
Station 08 of 11. Decision = the real checkConformance spend logic from kcp-harness (verbatim: no-authority → vendor → currency → max_spend, fail-closed). On a held purchase, wallet.authorize() is never called. Receipt signed & verified with genuine crypto.subtle.