/g/:slug)Monetize any REST API or unlock unlimited rate limits (>100 req/day) via Base Mainnet USDC EIP-3009 TransferWithAuthorization ($0.005 USDC/call).
// POST /v1/gateways -> https://api.nullclear.dev/g/:slug
POST /v1/clear & /v1/escrow)
Buyers attach an EIP-3009 signature in X-Payment. NullClear validates the upstream response against your Draft-07 JSON Schema, numeric invariants, and Canonical LLM Refusal Guard before settling on Base. Hallucinations or 5xx crashes shred the signature with $0.00 charged.
curl -X POST https://api.nullclear.dev/v1/clear \
-H "Content-Type: application/json" \
-H "x-nullclear-free-trial: true" \
-d '{"targetUrl":"https://api.nullclear.dev/v1/sandbox/market-feed","paymentSignatureHeader":"free-trial","validation":{"expectedStatus":[200],"rejectRefusals":true}}'