Discovery

Agents should probe these before inventing flows:

GET https://api.curb.numetal.xyz/.well-known/x402
GET https://api.curb.numetal.xyz/openapi.json
POST https://api.curb.numetal.xyz/v1/pay   # bare → 402 sample (Base + Solana)
GET https://api.curb.numetal.xyz/llms.txt
GET https://api.curb.numetal.xyz/skill.md

.well-known/x402 is Ishtar-shaped (x402Version + resources[].accepts) advertising USDC on x402 on Base (eip155:8453) and Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp). (Buyers may also pay via pay.sh on Solana.) OpenAPI is the canonical x402scan contract (x-payment-info on POST /v1/pay; free reads use security: []). llms.txt / skill.md are prose entrypoints.