{"query":"zip-codes.com","mode":"domain","best":{"domain":"zip-codes.com","status":"valid","tier":"listed","authority":54,"verified":false,"title":"ZIP Codes API","summary":"Location intelligence for the US and Canada: postal lookups, every geographic overlap a ZIP Code has (counties, places, tracts, districts, school districts, with shares), a normalized 14-year ACS demographic series, spatial radius search and US address matching to ZIP+4. ZIP boundaries are carrier-route derived and refreshed quarterly, not Census ZCTAs. Free accounts: 2,500 credits/day, 60 requests/minute. Base URL https://api.zip-codes.com; authenticate with the X-Api-Key header (?key= also wor","llms_txt":"https://www.zip-codes.com/llms.txt","llms_full_txt":"https://www.zip-codes.com/llms-full.txt","last_checked":"2026-10-18T21:22:21.619Z","agent_terms":null,"categories":[],"capabilities":[],"why":["authority 54 (listed)","checked 1104 minutes ago","publishes llms-full.txt"]},"read":{"llms_txt":"https://www.zip-codes.com/llms.txt","llms_full_txt":"https://www.zip-codes.com/llms-full.txt","nested_llms_txt":[]},"terms":null,"health":{"ok":true,"status":"valid","tier":"listed","authority":54,"last_checked":"2026-10-18T21:22:21.619Z","checked_minutes_ago":1104,"stale":false,"max_age_seconds":86400,"live_checked":false,"http_status":200,"last_valid":"2026-10-18T21:22:21.619Z","content_hash":"16660769106b2296865a6efe59cfd514"},"sources":[],"match":{"strength":"domain","reason":"Exact domain or its registered publisher."},"provenance":{"selection":"directory","verification":"domain_ownership","terms":"unknown","excerpts":"publisher_link_metadata","health":"stored_crawl"},"alternatives":[],"watch":"POST https://agentwebmap.com/v1/watch with {\"domain\": \"zip-codes.com\", \"webhook_url\": \"https://your-endpoint\"} to be told when its llms.txt changes or breaks"}