generated: '2026-07-18' method: searched source: https://developer.blackline.com/apis docs: https://developer.blackline.com/apis summary: types: [oauth2] oauth2_flows: [clientCredentials] api_key_in: [] schemes: - name: OAuth2ClientCredentials type: oauth2 flow: clientCredentials token_url: https://api.blackline.com/auth/token grant_type: client_credentials credentials: [client_id, client_secret] token_type: Bearer description: >- BlackLine REST APIs authenticate with OAuth 2.0 client credentials. An application is registered in the BlackLine admin to obtain a Client ID and Client Secret, which are exchanged at the token endpoint for a Bearer access token presented in the Authorization header on each API call. sources: [docs] notes: >- Derived from BlackLine developer portal documentation (no public OpenAPI available to derive securitySchemes from). Token host may be region-specific in some deployments (SAP Core / STS middleware exchanges an API key for an OAuth Bearer token).