Ontology crosswalks.
Each Codex dataset maps field-by-field to recognized external standards. DCAT-US is the metadata schema U.S. federal agencies use to catalog open data on data.gov; Codex targets DCAT-US v3.0 so institutional buyers can catalog it alongside public-sector data.
Read the normalization standard →
Civic Intelligence
DCAT-US v3.0 · PROV-DM · schema.org/GovernmentService
AIS Maritime Positions
IHO S-100 · IMO A.600(15) · ITU-R M.1371
Urban Signal Grid
OSCRE IDM 2.0 · OGC API — Features · DCAT-US v3.0
Axiom Events Timeline
W3C PROV-DM · schema.org/Event · DCAT-US v3.0
LEHD Commuter Flows
Census TIGER/FIPS · OGC GeoJSON · DDI-Lifecycle
POI Intelligence
schema.org/LocalBusiness · GS1 GLN · OGC GeoJSON
Permit Signals
DCAT-US v3.0 · schema.org/GovernmentPermit · PROV-DM
OSHA Safety Index
schema.org/GovernmentPermit · NAICS · FRS · DCAT-US
CDC PLACES Census Tract Health Estimates
CDC PLACES 2025 · Census TIGER/Line · ANSI/FIPS · Uber H3
LEHD Workplace Jobs (LODES WAC)
LEHD LODES8 WAC · Census block GEOID · ANSI/FIPS