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v4
  • v1, v2 and v3 are retired. Their paths return 410 version_retired with the current version. See Versioning.
  • https://portal.quoindata.com/api/openapi.json always serves the current version’s spec.
  • New: search filters one record kind across a jurisdiction on source fields, including owner names.
  • jurisdiction accepts only covered state and county codes.
  • connected no longer returns the starting entity; find returns results in a stable order.
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v4
  • v4 released with national coverage: Washington, D.C., Maryland and six Northern Virginia jurisdictions.
  • Endpoints: find, catalog, connected, records, summary, history.
Changes are additive: new endpoints, optional parameters and response fields. Breaking changes ship as a new API version with notice.