{"uid":"cap_LJgs8ZQdKKL5CaIpydcWn","slug":"rotary-agency-zip-code-lookup-api-a8582ebf","name":"Rotary Agency ZIP Code Lookup API","description":"Free-source data APIs (100% margin, no proxy, $0.002/call): ...","url":"https://rotaryagency.uk/api/free/zip?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"varies":"endpoint-specific structured JSON"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VpZqrTFehYImAVHwoqzOt","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up structured location data (city, state, county, timezone, coordinates, etc.) for a given US ZIP code","exampleAgentPrompt":"What city, state, and county does ZIP code 90210 belong to, and what timezone is it in?","exampleUseCases":[{"title":"Validate customer shipping address","prompt":"I have a customer order with ZIP code 85001 — can you confirm what city and state that maps to so I can verify it matches the address they entered?"},{"title":"Auto-fill city and state from ZIP","prompt":"A user just typed in ZIP code 10001 on our checkout form — look up the corresponding city, state, and county so we can pre-fill the rest of their address automatically."},{"title":"Determine timezone from ZIP code","prompt":"We have a user whose ZIP code is 60601 — what timezone are they in so we can schedule their notification at the right local time?"}],"resultDescription":"Returns a structured JSON object containing location details for the given ZIP code, typically including city name, state, county, latitude, longitude, timezone, and potentially area code or population data.","failureModes":["Invalid or non-existent ZIP code returns an error or empty result","Non-US ZIP codes may not be supported","Malformed ZIP code (wrong length or non-numeric) returns a validation error","Rate limiting or payment failure results in a 402 or 429 response"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call ZIP code lookup without a subscription, especially in agentic workflows where you only need occasional ZIP-to-location resolution. At $0.002/call it is cost-effective for low-to-medium volume use. Prefer alternatives if you need bulk batch processing or international postal code support.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T18:38:48.765Z","isFirstParty":false,"canonicalSlug":"rotary-agency-zip-code-lookup-api-a8582ebf"}