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Function that derives auth credentials from connection parameters. Use for static-key auth (api-key, basic-auth) where the user-provided input IS the credential.

Function that refreshes expired credentials. Implement for non-standard OAuth refresh flows or when additional credentials need to be refreshed alongside the OAuth token.

Function that configures the HTTP client used by operations, actions and data sources. Typically a mapping type with baseUri and auth header wiring.

OAuth2: function returning { authorizeUri, tokenUri, scopes, noRefreshToken? } — the authorize/token endpoint URLs and requested scopes.

OAuth2: function invoked with the raw token response to extract token metadata. Rarely needed.

OAuth2: function that transforms the token endpoint response into the final credentials object. Required for multi-tenant APIs (Microsoft) or APIs that require post-OAuth bootstrap calls.

OAuth2: function that transforms the refresh token endpoint response into the refreshed credentials. Required when refresh responses differ from initial-token responses.

Function that verifies the connection by making a lightweight authenticated API call (typically a rest-api-mapping against a /me-style endpoint).

Function that revokes credentials at the provider when the connection is removed. Implement only if the provider exposes a revoke endpoint.