CarCast

Attributions & Open-Source Notices

CarCast is built on open-source software and public datasets. This page lists the projects, models, and data sources we depend on, along with the licenses and attributions required by their authors. Last updated May 2026.

Forecasting model

CarCast's price forecasts are generated on top of an open-source time-series foundation model from Google Research, used under the Apache License 2.0. The upstream model weights and inference code are unmodified; we provide our own pre-processing (log transform, weekly resampling) and post-processing (P10/P50/P90 extraction, trend classification) on top of the model's output.

Citation: Das, Abhimanyu, et al. “A decoder-only foundation model for time-series forecasting.” arXiv preprint arXiv:2310.10688 (2023).

Market & macro data

  • MarketCheck — used dealer-listing inventory and aggregate price stats. Licensed commercial API; CarCast uses MarketCheck data under its API terms.
  • Manheim Used Vehicle Value Index (MUVVI) — Cox Automotive / Manheim, used for wholesale-market context.
  • Bureau of Labor Statistics (BLS) CPI series for used cars and trucks (CUUR0000SETA02), accessed via FRED (Federal Reserve Bank of St. Louis). Public domain.

Software libraries

The CarCast web and API services are built on several open-source libraries. The major ones we want to call out:

  • Next.js, React — MIT License
  • Tailwind CSS, shadcn/ui, Radix UI, Lucide — MIT License
  • FastAPI, SQLAlchemy, Pydantic, APScheduler, asyncpg — MIT/BSD-style licenses
  • recharts, date-fns, aiohttp — MIT License
  • PostgreSQL (Neon) — PostgreSQL License

Apache License 2.0 notice

Components used under the Apache License, Version 2.0 (full text) are distributed on an “AS IS” basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations.

Spot a missing attribution? Let us know at /contact and we'll fix it.