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OAuth Flows

Excerpt from the OpenAPI 3.1 specification about the OAuth Flows object

OAuth Flows Object

Allows configuration of the supported OAuth Flows.

Fixed Fields
Field NameTypeDescription
implicitOAuth Flow ObjectConfiguration for the OAuth Implicit flow
passwordOAuth Flow ObjectConfiguration for the OAuth Resource Owner Password flow
clientCredentialsOAuth Flow ObjectConfiguration for the OAuth Client Credentials flow. Previously called application in OpenAPI 2.0.
authorizationCodeOAuth Flow ObjectConfiguration for the OAuth Authorization Code flow. Previously called accessCode in OpenAPI 2.0.

This object MAY be extended with Specification Extensions.

OAuth Flow Object

Configuration details for a supported OAuth Flow

Fixed Fields
Field NameTypeApplies ToDescription
authorizationUrlstringoauth2 ("implicit", "authorizationCode")REQUIRED. The authorization URL to be used for this flow. This MUST be in the form of a URL. The OAuth2 standard requires the use of TLS.
tokenUrlstringoauth2 ("password", "clientCredentials", "authorizationCode")REQUIRED. The token URL to be used for this flow. This MUST be in the form of a URL. The OAuth2 standard requires the use of TLS.
refreshUrlstringoauth2The URL to be used for obtaining refresh tokens. This MUST be in the form of a URL. The OAuth2 standard requires the use of TLS.
scopesMap[string, string]oauth2REQUIRED. The available scopes for the OAuth2 security scheme. A map between the scope name and a short description for it. The map MAY be empty.

This object MAY be extended with Specification Extensions.

OAuth Flow Object Examples
{
  "type": "oauth2",
  "flows": {
    "implicit": {
      "authorizationUrl": "https://example.com/api/oauth/dialog",
      "scopes": {
        "write:pets": "modify pets in your account",
        "read:pets": "read your pets"
      }
    },
    "authorizationCode": {
      "authorizationUrl": "https://example.com/api/oauth/dialog",
      "tokenUrl": "https://example.com/api/oauth/token",
      "scopes": {
        "write:pets": "modify pets in your account",
        "read:pets": "read your pets"
      }
    }
  }
}
type: oauth2
flows:
  implicit:
    authorizationUrl: https://example.com/api/oauth/dialog
    scopes:
      write:pets: modify pets in your account
      read:pets: read your pets
  authorizationCode:
    authorizationUrl: https://example.com/api/oauth/dialog
    tokenUrl: https://example.com/api/oauth/token
    scopes:
      write:pets: modify pets in your account
      read:pets: read your pets

Visuals

Authorization Code with PKCE visual

The following describes a security scheme using the Authorization Code flow with PKCE. PKCE is supported by using the x-usePkce specification extension.

components:
  securitySchemes:
    GitLab_OAuth2AuthorizationCodeWithPKCE:
      description: OAuth2 Authorization Code with PKCE description
      type: oauth2
      flows:
        authorizationCode:
          x-usePkce:
            disableManualConfiguration: false
            hideClientSecretInput: false
          authorizationUrl: 'https://gitlab.com/oauth/authorize'
          tokenUrl: 'https://gitlab.com/oauth/token'
          scopes:
            'api': Grants complete read/write access to the API, including all groups and projects, the container registry, and the package registry.
            'read_user': Grants read-only access to the authenticated user's profile through the /user API endpoint, which includes username, public email, and full name. Also grants access to read-only API endpoints under /users.

The corresponding Try it interface displays the client ID and client secret fields. It is possible to hide the client secret field with the hideClientSecretInput field on the x-usePkce object.

Authorization Code with PKCE

If the manual configuration is not disabled, then a user can toggle the "Configure PKCE manually" to edit the code verifier and code challenge. Use the disableManualConfiguration on the x-usePkce object to disable manual configuration.

Authorization Code with PKCE

Client Credentials visual

Client credentials displays a client ID and client secret field in Try it. Once the token is received, it is stored for the duration of the session. client credentials try it

Implicit flow visual

The implicit flow description. implicit flow security

The implicit flow displays a client ID field in Try it.

implicit flow try it

Password flow visual

The password flow description. password flow security

The password flow displays an access token type field and access token field in Try it. The access token type field is pre-filled with "Bearer" as the value.

password flow try it

Types

  • OAuth2Flows
  • AuthorizationCode
  • ClientCredentials
  • ImplicitFlow
  • PasswordFlow
const OAuth2Flows: NodeType = {
  properties: {
    implicit: 'ImplicitFlow',
    password: 'PasswordFlow',
    clientCredentials: 'ClientCredentials',
    authorizationCode: 'AuthorizationCode',
  },
};

Authorization code flow type

const AuthorizationCode: NodeType = {
  properties: {
    refreshUrl: { type: 'string' },
    authorizationUrl: { type: 'string' },
    scopes: { type: 'object', additionalProperties: { type: 'string' } },
    tokenUrl: { type: 'string' },
  },
  required: ['authorizationUrl', 'tokenUrl', 'scopes'],
};

Client credentials flow type

const ClientCredentials: NodeType = {
  properties: {
    refreshUrl: { type: 'string' },
    scopes: { type: 'object', additionalProperties: { type: 'string' } },
    tokenUrl: { type: 'string' },
  },
  required: ['tokenUrl', 'scopes'],
};

Implicit flow type

const ImplicitFlow: NodeType = {
  properties: {
    refreshUrl: { type: 'string' },
    scopes: { type: 'object', additionalProperties: { type: 'string' } },
    authorizationUrl: { type: 'string' },
  },
  required: ['authorizationUrl', 'scopes']
};

Password flow type

const PasswordFlow: NodeType = {
  properties: {
    refreshUrl: { type: 'string' },
    scopes: { type: 'object', additionalProperties: { type: 'string' } },
    tokenUrl: { type: 'string' },
  },
  required: ['tokenUrl', 'scopes'],
};
 
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