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Curated datasets

Vlada ontology layer one (identifier)

vlada_ontology.l1_identifier·live·mart
Rows
4,716
Columns
7
History
N/A
Card
nocolumns only
Typed tools
2

What it is

  1. 1The Vlada ontology, layer one (who holds and who owns every Medicare, Medicaid and Marketplace instrument, over time), SIGNED by Ben on build v3o (2026-10-28; docs/architecture/ontology-v2/L1-SIGNOFF.md).
  2. 2Permanent IDs; a legal entity is not its brand nor the contract it holds; history is dated events with filings; every fact graded A/B/C with its evidence; two clocks.
  3. 3Built by tools/ontology2/build.py, served by tools/ontology2/serve.py (the view moves only to a signed build).
  4. 4Tools: resolve_entity, describe_entity;
  5. 5API: /v1/entities.

Grain

KeyGrain
N/A
  1. 1One row per identifier that names an entity: namespace (cms_org_name, ein, naic, cik, hios, ...), value, value_norm, validity window, evidence.

Columns (7)

ColumnTypeMeaning
entity_idstring
namespacestring
valuestring
value_normstring
valid_fromstring
valid_tostring
evidence_idstring

Query it

describe_data_source(source_fqn="vlada_ontology.l1_identifier")     # the card, live
query_substrate(sql="SELECT * FROM vlada_ontology.l1_identifier WHERE <filter> LIMIT 100")
ItemValue
Typed tools that read itdescribe_entity, resolve_entity
Identity keyentity_id
Joinhow_to_join(source_fqn="vlada_ontology.l1_identifier")
Raw doorAthena (read-only): vlada_ontology.l1_identifier
NoteDates are strings YYYY-MM-DD; an empty valid_to is an open end; from_basis first_observed means "at least since"; observed_to means "last seen". Skill docs/architecture/ontology-v2/API-CONTRACT.md.

This page as markdown: /docs-md/data/vlada_ontology_l1_identifier.md · every page in one file: /llms-full.txt