Data.gov

Project Open Data (data.json) Catalog API

Every U.S. federal executive branch agency is required by the Open Government Data Act of 2018 (and predecessor OMB M-13-13) to publish a public enterprise data inventory as a JSON document at /data.json on its primary domain. The format follows the DCAT-US 1.1 schema (Project Open Data Metadata Schema), an extension of W3C DCAT. Data.gov harvests these /data.json endpoints on a regular cadence and ingests records into the central CKAN catalog. The schema defines a Catalog containing Dataset records with required fields (title, description, keyword, modified, publisher, contactPoint, identifier, accessLevel, bureauCode, programCode) and optional distribution records (downloadURL, accessURL, mediaType, format).

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API entry from apis.yml

aid: data-gov:project-open-data
name: Project Open Data (data.json) Catalog API
tags:
- Open Data
- DCAT-US
- Federal
- Catalog
humanURL: https://resources.data.gov/resources/dcat-us/
properties:
- url: https://resources.data.gov/resources/dcat-us/
  type: Documentation
- url: https://project-open-data.cio.gov/v1.1/schema/
  type: JSONSchema
- url: https://github.com/GSA/project-open-data-dashboard
  type: SourceCode
description: Every U.S. federal executive branch agency is required by the Open Government Data Act of
  2018 (and predecessor OMB M-13-13) to publish a public enterprise data inventory as a JSON document
  at /data.json on its primary domain. The format follows the DCAT-US 1.1 schema (Project Open Data Metadata
  Schema), an extension of W3C DCAT. Data.gov harvests these /data.json endpoints on a regular cadence
  and ingests records into the central CKAN catalog. The schema defines a Catalog containing Dataset records
  with required fields (title, description, keyword, modified, publisher, contactPoint, identifier, accessLevel,
  bureauCode, programCode) and optional distribution records (downloadURL, accessURL, mediaType, format).