# TIER (now Dott)

> TIER Mobility merged with Dott in 2024; the combined shared e-scooter and e-bike operator trades as Dott (ridedott.com). Real-time fleet, pricing, station and geofencing data is published as open GBFS 2.3 feeds at https://gbfs.api.ridedott.com/public/v2/{system_id}/ (one system_id per city, e.g. berlin, paris). The public feeds need no credential; a separate partner API on the same host requires a Dott-issued API Key sent as `Authorization: Bearer <key>` under the Dott API Licence.

Generated by API Evangelist on 2026-09-16 from the api-evangelist/tier-mobility catalog record (method: generated). Dott does not publish an llms.txt (https://ridedott.com/llms.txt returned 404).

## GBFS feeds (public, no auth)

- [GBFS versions](https://gbfs.api.ridedott.com/public/v2/gbfs_versions.json): listGbfsVersions — supported GBFS versions (2.3)
- [Discovery](https://gbfs.api.ridedott.com/public/v2/berlin/gbfs.json): getGbfsDiscovery — feed list for a system_id
- System information (`/{system_id}/system_information.json`): getSystemInformation
- Vehicle types (`/{system_id}/vehicle_types.json`): getVehicleTypes
- Free bike status (`/{system_id}/free_bike_status.json`): getFreeBikeStatus — live vehicle positions, battery/range, rental URIs
- Pricing plans (`/{system_id}/system_pricing_plans.json`): getSystemPricingPlans
- Geofencing zones (`/{system_id}/geofencing_zones.json`): getGeofencingZones
- Station information (`/{system_id}/station_information.json`): getStationInformation
- Station status (`/{system_id}/station_status.json`): getStationStatus

## Contracts

- [Discovery API OpenAPI](openapi/tier-mobility-discovery-api-openapi.yml)
- [System API OpenAPI](openapi/tier-mobility-system-api-openapi.yml)
- [Vehicles API OpenAPI](openapi/tier-mobility-vehicles-api-openapi.yml)
- [Stations API OpenAPI](openapi/tier-mobility-stations-api-openapi.yml)
- [Zones API OpenAPI](openapi/tier-mobility-zones-api-openapi.yml)
- [GBFS specification](https://github.com/MobilityData/gbfs)

## Access and policy

- [API Licence](https://ridedott.com/api-licence/): partner API Key terms (no sharing, revocable)
- [Authentication profile](authentication/tier-mobility-authentication.yml)
- [Rate limits](rate-limits/tier-mobility-rate-limits.yml): none published; respect each feed's `ttl`
- [Terms and conditions](https://ridedott.com/terms-and-conditions/)
- [Privacy policy](https://ridedott.com/privacy/)

## Optional

- [Help center](https://help.ridedott.com/)
- [Press releases](https://ridedott.com/press-release/)
- [GitHub organization](https://github.com/ridedott)