generated: '2026-07-18'
method: searched
source: https://compass.coupa.com/en-us/products/product-documentation/integration-technical-documentation/the-coupa-core-api/oauth-2.0-and-oidc
docs: https://compass.coupa.com/en-us/products/product-documentation/integration-technical-documentation/the-coupa-core-api/oauth-2.0-and-oidc
summary:
  types: [oauth2, openIdConnect]
  current: OAuth 2.0 / OpenID Connect (OIDC)
  deprecated: [apiKey]
  notes: >-
    Coupa has transitioned the Core API from static API keys to OAuth 2.0 with OpenID Connect
    (OIDC). API keys are deprecated: existing keys must be migrated to OAuth/OIDC clients and
    revoked under Setup > API Keys. OAuth/OIDC clients are configured per Coupa instance.
schemes:
  - name: OAuth2 / OIDC
    type: oauth2
    description: >-
      OpenID Connect (an authentication layer on top of OAuth 2.0) is the required protocol for
      new Core API integrations. OIDC clients are created and managed within the Coupa instance
      administration (OpenID Connect Clients). Coupa documents OIDC client setup patterns for
      NetSuite OAuth and Okta user provisioning.
    sources: [docs]
  - name: API Key (deprecated)
    type: apiKey
    in: header
    parameter: X-COUPA-API-KEY
    deprecated: true
    description: >-
      Legacy static API-key header authentication. Deprecated in favor of OAuth 2.0 / OIDC;
      remaining keys should be transitioned to OAuth clients and revoked.
    sources: [docs]