# Selo > CI for x402. It pays your endpoint before your users do. Run an authorized x402 release test. Selo settles the request, pays the target endpoint, verifies payment and response behavior, and returns an evidence-backed PASS, FAIL, or INCONCLUSIVE report. ## Endpoints - POST https://api.useselo.xyz/v1/authorizations: request a verification challenge for a target route (free) - POST https://api.useselo.xyz/v1/preflight: check a target is testable and within budget (free) - POST https://api.useselo.xyz/v1/release-test: run the release test (paid with x402, 1.00 USDC on Algorand) - GET https://api.useselo.xyz/v1/reports/%7Btoken%7D: private report