One REST call tells you whether an agent should pay a resource. Start free — no wallet, no crypto. Agents can still pay per-call via x402.
Agents that run a wallet skip keys entirely: POST /check for $0.01 in USDC via x402.
curl -X POST https://verify.inferenceview.com/v1/check \
-H "Authorization: Bearer iv_..." \
-H "Content-Type: application/json" \
-d '{"url":"https://api.some-tool.com/paid-endpoint"}'