Listing Roast x402

x402 route health check before paying more

Use this when a buyer or seller needs direct 402 metadata, price, route health, and agent-readable discovery checks before a deeper paid action.

x402 route health checkroute health checkx402 route healthpayment challenge healthdirect 402 metadatapaid API preflight

Use the exact $0.001 x402 route health route Open free route handoff Verify paid-use proof Open compact command JSON

Primary paid route

GET /api/x402-route-health-check

Price: $0.001. Max amount: 1000 USDC units. Use this exact-path route when the buyer asks for an x402 route health check.

npx awal@2.8.0 x402 pay 'https://listing-roast-x402-service-production.up.railway.app/api/x402-route-health-check' \
  -X GET \
  --max-amount 1000

Proven first paid route

GET /api/listing-roast

This is the already-indexed route with confirmed paid use. Check /api/paid-usage-proof before paying.

npx awal@2.8.0 x402 pay 'https://listing-roast-x402-service-production.up.railway.app/api/listing-roast' \
  -X GET \
  --max-amount 1000

Upgrade path

Use the $0.01 POST discovery audit when a custom endpoint body is needed.

POST /api/x402-discovery-audit

Price: $0.01. Max amount: 10000 USDC units.

Free discovery before payment

llms.txt gives the short route guide. x402.json gives machine-readable paid routes. /api/commands gives the compact command handoff. /api/examples gives command-ready examples. /api/paid-usage-proof gives wallet-backed paid-use proof.

No-spend boundary

This page does not call a paid route. A buyer should only run the x402 command when they explicitly intend to spend USDC.