{"version":"2","status":"sandbox","network":"base-sepolia","facilitator":"https://x402.org/facilitator","supported_assets":["USDC"],"payment_endpoint":"https://trusteed.xyz/api/x402","description":"Trusteed supports x402 v2 micropayments via Base Sepolia (USDC) — a TESTNET. The rail is deployed and merchant-enablable; there are no known real settlements. GET /api/x402 without payment headers returns HTTP 402 with X-PAYMENT-REQUIRED instructions WHEN a payout address is configured on the deployment; otherwise it returns 501, because a challenge naming the null address would instruct an agent to burn funds. /api/x402 is a PROBE: it does not verify payment payloads, and presenting a payment header to it returns 501, never an acceptance (corrected 2026-08-21, plan V-04)."}