Docs

Data Sources

Every dataset should make its source, license notes, coverage, and freshness inspectable before production use.

Source metadata

Dataset pages expose source URLs, license notes, refresh cadence, and last checked dates where available.

meta.source
meta.source_url
meta.last_updated

Response metadata example

Production responses include source and freshness fields. Demo responses also include meta.demo and the production endpoint they mirror.

{
  "meta": {
    "source": "SimpleMaps US ZIP Codes Basic / ApiDatasets normalization",
    "source_url": "https://simplemaps.com/data/us-zips",
    "last_updated": "2026-05-08T00:00:00Z"
  }
}

Coverage

Live datasets include coverage summaries. Beta datasets are explicitly marked and should not be treated as comprehensive.

Location: ZIP profile coverage
Tax: federal 2026 reference values
Beta: seeded sample coverage only

Source review checklist

Before production use, review license notes, attribution, commercial-use guidance, last successful ingestion, and known limitations.

/data-sources
/apis/location-enrichment/sources
/apis/tax-reference/sources