# Sound Transit Agencies API

**Canonical:** https://apis.io/apis/sound-transit/sound-transit-agencies-api/  
**Provider:** Sound Transit — https://apis.io/providers/sound-transit/  
**Base URL:** https://api.pugetsound.onebusaway.org/api/where  
**Documentation:** https://www.soundtransit.org/help-contacts/business-information/open-transit-data-otd

Sound Transit Agencies API is one of 7 APIs that [Sound Transit](https://apis.io/providers/sound-transit/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Agencies. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

Transit agency information and coverage

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/sound-transit/refs/heads/main/openapi/sound-transit-agencies-api-openapi.yml
- **Documentation** — https://www.soundtransit.org/help-contacts/business-information/open-transit-data-otd
- **Reference** — http://developer.onebusaway.org/
- **GTFS Downloads** — https://www.soundtransit.org/help-contacts/business-information/open-transit-data-otd/otd-downloads
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/sound-transit/refs/heads/main/apis.yml

## Other Sound Transit APIs (6)

- [Sound Transit Arrivals And Departures API](https://apis.io/apis/sound-transit/sound-transit-arrivals-and-departures-api/)
- [Sound Transit Routes API](https://apis.io/apis/sound-transit/sound-transit-routes-api/)
- [Sound Transit Stops API](https://apis.io/apis/sound-transit/sound-transit-stops-api/)
- [Sound Transit System API](https://apis.io/apis/sound-transit/sound-transit-system-api/)
- [Sound Transit Trips API](https://apis.io/apis/sound-transit/sound-transit-trips-api/)
- [Sound Transit Vehicles API](https://apis.io/apis/sound-transit/sound-transit-vehicles-api/)

## Tags

Agencies

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/sound-transit/sound-transit-agencies-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/sound-transit/.