oauth21-bearer-token

What problem does it solve?

Bearer tokens must be transmitted securely and validated correctly to protect resource servers and prevent token leakage. This guide defines how to properly transmit bearer tokens, enforce TLS, and prevent token leakage in OAuth 2.1 contexts.

Core Features & Use Cases

• Correct token transmission via Authorization header with case-insensitive Bearer prefix.
• Guidance against using query parameters for tokens and when to use form-encoded bodies.
• Token validation steps and security requirements (TLS, audience, scope, and revocation considerations).
• Use case examples for resource servers and clients enabling secure access.

Quick Start

Attach a valid Bearer token to the Authorization header in your API requests to protect access to resources.