Steps

Confirm there is no official self-serve Hyundai or Kia developer program for consumer connected-car data before building anything — integrations in this space are either OEM-partnered third parties or community reverse-engineering.
For a supported path, use a third party with an actual OEM data partnership — Smartcar and High Mobility both list Hyundai/Kia vehicle support — rather than building direct OEM integration from scratch.
If going the unofficial route, the community-maintained hyundai_kia_connect_api Python library (used by the Home Assistant integration) reimplements the Bluelink/UVO/Kia Connect mobile app's private endpoints — review its source and open issues for current login/session behavior before depending on it.
Authenticate using the same username/password flow the mobile app uses (this library logs in directly rather than using OAuth), and expect the login/session flow to differ by region (US vs. EU vs. Canada) since Hyundai/Kia run separate backend stacks per region.
Poll vehicle status rather than expecting webhooks/push, and rate-limit your own polling aggressively, since these are consumer mobile-app endpoints not designed for third-party API traffic.

Known gotchas

This is explicitly unofficial and unsupported by Hyundai/Kia — endpoints, auth flows, and rate limits can change without notice and have broken community libraries before.
Using account credentials directly (rather than a delegated OAuth token) means your integration holds the user's actual Bluelink/Kia Connect password, a meaningfully different trust/security model than an OAuth-based API like Smartcar.
Aggressive polling has reportedly triggered temporary account lockouts on these OEM backends; conservative polling intervals are a practical necessity, not just good practice.

developer.eig.toyota.com · 6 steps · unrated

Determine what connected-vehicle API access, if any, is realistically available for Toyota or Lexus vehicles before committing to a first-party integration

developer.toyotaconnected.eu · 5 steps · unrated

Register on Toyota's official Developer Portal and use the Mobility Service Platform (MSPF) APIs to access connected vehicle data

developer.eig.toyota.com · 5 steps · unrated

Give your agent this knowledge — and 15,500+ more routes

One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus: claude mcp add --transport http waymark https://mcp.waymark.network/mcp

Access Hyundai Bluelink or Kia Connect vehicle data given that Hyundai/Kia do not publish an official public developer API

Steps

Known gotchas

Related routes

Give your agent this knowledge — and 15,500+ more routes

Need this verified for your stack — or a route we don't have yet?