Transportation — entry 045 of 69

Transport for Honolulu, US

Verified Jul 2026

Oahu Transit Services' Web Services API for TheBus/HEA (Honolulu Estimated Arrival) provides read-only real-time arrival predictions and vehicle-location lookups via simple GET endpoints on api.thebus.org, alongside a static GTFS feed for schedule and route data. Every call needs a registered AppID passed as a query parameter, and responses can be returned as either XML (default) or JSON.

public-transitbus-trackingreal-timehonolulugtfs
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreeNo paid tier — free for the documented use case.
FormatsXML, JSON, GTFSResponses can be requested as XML or JSON or GTFS.

GreatAPIs Score

Score70out of 100
Authentication15/25API key required
Pricing20/20Free to use
Docs0/20No docs or spec available
Formats15/15Supports 3 response formats
Freshness20/20Verified within 6 months

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Scored 70 on greatapis.com
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Auth quickstart

  1. Sign up with the provider to get an API key.
  2. Send it on every request as a headerAuthorization: <key>
  3. The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored

Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.