Read-only x402 gateway status

Public, anonymous metadata read. It returns HTTP 200 while platform custody is frozen, with read_only=true, operational=false, a frozen/outbound-disabled custody projection, and every payment, provider, routing, referral, trust, and listing authority field false. This endpoint never issues payment challenges, payment receipts, or authentication challenges. While custody is frozen the response includes Cache-Control: no-store.

The remaining response returns retained x402 configuration plus the configured Open Wallet Standard buyer flow, explicit buyer_paths, and MPP preview metadata. These are not current payment instructions. Only after GET /market.json reports paid execution enabled and the owner approves spend may anonymous buyers use the self-custody stable edge, registered buyers use wallet-backed execute/invoke or exact x402 fallback, or connected Agentic Wallet buyers use direct x402 checkout. main_domain_catalog_policy makes the broader compatibility exposure rule explicit: active + approved + endpoint-backed listings can auto-publish onto /api/x402/* when they pass the base marketplace safety rules and have at least one runtime-readiness signal (verified, reachable, or successful runtime proof). The stable edge remains the smaller curated verified cohort.