Steps

Confirm there is no general-purpose public Rivian developer API before scoping the integration — Rivian's third-party data access runs through specific commercial partnerships instead.
For fleet use cases, connect through one of Rivian's announced telematics partners — Samsara (via its vehicle gateway integration) or Geotab (via its embedded telematics partnership) — rather than attempting direct OEM access.
Set up the Rivian vehicles under a Samsara or Geotab fleet account so the partner platform receives Rivian-reported data directly rather than through an aftermarket OBD dongle.
Use that platform's own API (e.g., Samsara's /fleet/vehicles/stats endpoints) to pull the resulting GPS, odometer, and state-of-charge data into your system, treating Rivian as just another vehicle make in that platform's fleet.
For a single consumer vehicle rather than a commercial fleet, evaluate Smartcar's Rivian support as a lighter-weight alternative to standing up a full fleet-telematics platform relationship.

Known gotchas

This is a partner-mediated integration, not direct OEM access — feature coverage and data freshness are bounded by what Rivian exposes to that specific partner, which can lag Rivian's own consumer app.
These partnerships are generally oriented around Rivian's commercial vehicle line rather than guaranteeing equivalent access for consumer R1T/R1S vehicles — verify vehicle-type coverage before committing to one partner.
Unofficial reverse-engineered Rivian API libraries also exist in the community, but carry the same breakage/ToS risk as any unofficial OEM API — treat them as a fallback for prototyping, not production fleet operations.

developer.fleetio.com · 6 steps · unrated

Access Mercedes-Benz's fleet-oriented Fleet API and Fleet Partner API products for commercial fleet vehicle data, as distinct from the consumer-facing vehicle status and EV status products on the same developer portal

developer.mercedes-benz.com · 5 steps · unrated

Understand the risk and scope of using an unofficial, reverse-engineered Rivian API for vehicle telemetry and commands

rivian-api.kaedenb.org · 5 steps · unrated

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Access Rivian commercial fleet vehicle data (GPS, odometer, state of charge) through an official OEM-authorized fleet telematics partner, since Rivian has no public developer API

Steps

Known gotchas

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