{"name":"MX Probe API","version":"0.1.0","docs":"https://mxprobe.dev","pricing":"100 free checks at signup, then 9 USD per 10,000 checks, one payment, no expiry","endpoints":{"POST /v1/signup":"{\"email\"} -> {api_key, credits}. No auth.","POST /v1/verify":"{\"emails\": [...]} (max 100) -> {results, summary, credits_used, credits_left}. Bearer key. 1 credit per address.","GET /v1/balance":"-> {email, credits, checks_total}. Bearer key.","POST /v1/credits/checkout":"{\"packs\": 1} -> {url}. Bearer key. Pay at the URL; credits land on confirmation."},"verdict":{"action":["send","hold","kill"],"verdict":["OK","WEAK","DEAD"],"checks":["syntax","mx","smtp","catch_all"]},"privacy":"Addresses are logged for 24 hours for debugging, then deleted. They never leave the server except to the mail exchanger being asked."}