generated: '2026-07-11' method: derived source: openapi/bls-public-data-api-openapi.yml summary: types: - apiKey api_key_in: - query schemes: - name: ApiKey type: apiKey in: query parameter: registrationkey description: Free API registration key from https://data.bls.gov/registrationEngine/. Required for v2 API access with higher rate limits. sources: - openapi/bls-public-data-api-openapi.yml