{"name":"match-key-email","description":"Normalizes email addresses into a match key so aliases of the same inbox collide. Collapses Gmail dots and '+tag' subaddressing and lowercases the domain so 'John.Doe+promo@Gmail.com' and 'johndoe@gmail.com' share a key; also reports basic syntax validity and the domain. Deterministic and instant — no SMTP or MX lookups. Use it for email dedup, email normalization, or contact record linkage.","price":"$0.005","method":"POST","input_schema":{"properties":{"email":{"type":"string","description":"Email address."}},"required":["email"]},"input_example":{"email":"John.Doe+promo@Gmail.com"},"output_example":{"input":"John.Doe+promo@Gmail.com","normalized":"johndoe@gmail.com","match_key":"johndoe@gmail.com","is_valid_syntax":true,"domain":"gmail.com"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}