{"name":"match-key-phone","description":"Normalizes phone numbers into a canonical E.164 match key so formatting variants like '(415) 555-0100' and '+1 415-555-0100' collide. Strips formatting to digits and returns E.164, country code, and validity. Deterministic and instant — no carrier lookups. Use it for phone dedup, phone normalization, contact record linkage, or as an E.164 formatter.","price":"$0.005","method":"POST","input_schema":{"properties":{"phone":{"type":"string","description":"Phone number in any format."},"region":{"type":"string","description":"Default region for numbers without a country code. Default 'US'."}},"required":["phone"]},"input_example":{"phone":"(415) 555-0100"},"output_example":{"input":"(415) 555-0100","match_key":"14155550100","e164":"+14155550100","country_code":"1","is_valid":true},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}