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Authentication

Nouto has a dedicated Auth tab in the request editor for configuring authentication. The auth type you select determines which fields appear and how the credentials are sent with each request.

Type Best for
Basic HTTP Basic auth, legacy APIs, internal tools
Bearer Token JWT tokens, OAuth access tokens, API tokens
API Key API keys sent as a header or query parameter
OAuth 2.0 APIs using standard OAuth flows
AWS Signature v4 AWS services (S3, DynamoDB, API Gateway, etc.)
NTLM Windows-integrated auth, IIS, corporate intranets
Digest Legacy systems, network appliances, some enterprise APIs
None Public endpoints, or when auth is set via headers manually

Open any request and click the Auth tab. Select a type from the dropdown. The fields below update immediately to match the selected type.

Every auth field accepts {{variable}} syntax. Store credentials in environment variables rather than entering them directly, especially for secrets like tokens and passwords.

{{API_TOKEN}}
{{AWS_ACCESS_KEY}}
{{OAUTH_CLIENT_SECRET}}

Requests inside collections and folders can inherit auth from their parent instead of configuring it separately. This is useful when all requests in a collection share the same credentials.

See Auth Inheritance for the full configuration guide.

Sensitive fields (passwords, tokens, client secrets) are always masked in the UI. When you send a request over unencrypted HTTP to a non-localhost URL, Nouto shows a security warning.