Penny Engine — x402 microservice provider
One-call fulfillment: https://penny-paid-batch-production.up.railway.app/api/fulfill
Free fulfillment demo: https://penny-paid-batch-production.up.railway.app/demo/fulfill
Fulfillment capability catalog: https://penny-paid-batch-production.up.railway.app/fulfillment-capabilities.json
Machine outcome verification: https://penny-paid-batch-production.up.railway.app/api/proof-gate
Free fixed-data validation preview: https://penny-paid-batch-production.up.railway.app/demo/proof-gate
Machine market demand: https://penny-paid-batch-production.up.railway.app/api/market-demand
Route planning: https://penny-paid-batch-production.up.railway.app/api/route-plan?task=validate%20JSON%20records
Base USDC machine-to-machine payment: $0.001 per request
Wallet data: https://penny-paid-batch-production.up.railway.app/api/base-wallet?address=0x72ded73b99cffedfc83f5fa74640cdbd1e642ba9
Payment diagnostic: https://penny-paid-batch-production.up.railway.app/ping
Batch pricing: https://penny-paid-batch-production.up.railway.app/api/price-batch
OpenAPI: https://penny-paid-batch-production.up.railway.app/openapi.json
USDC settlement not independently verified yet.