{"name":"match-key-address","description":"Generates a match key for postal addresses with USPS-style standardization so equivalent addresses collide. Expands street types (St to Street), directionals (N to North), and unit designators (Apt/Ste/# to unit), then builds a stable key so '123 Main St Apt 4' and '123 Main Street #4' collide. Deterministic and instant — no geocoding or external lookups. Use it for postal address dedup and address record linkage.","price":"$0.005","method":"POST","input_schema":{"properties":{"address":{"type":"string","description":"Freeform US street address."}},"required":["address"]},"input_example":{"address":"123 Main St Apt 4"},"output_example":{"input":"123 Main St Apt 4","normalized":"123 main street unit 4","match_key":"123-mn-strt-unt-4"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}