Day 20: The "Secret" Handshake

Challenge Task: If your AI Agent needs to talk to an API without a human clicking a login button, which Grant Type should it use? (Hint: It’s the standard for M2M).

Submission Requirement: The Grant Type name + one reason why.

Client Credentials Grant is the standard OAuth 2.0 flow for Machine-to-Machine (M2M) authentication, designed for backend-to-backend communication where no user interaction is required.

  • Client Credentials flow requires that your agent is running in a private environment where its source code is not exposed to third parties - so no mobile apps or Single Page Apps (SPAs)

  • In production, it’s good practice to use a credential management mechanism to avoid long-lived credentials (which are vulnerable to compromise).

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Client Credential Type this avoid the Human interaction and will make the calls on the API

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Client Credentials Grant because typical authentication schemes like username + password, social logins, etc. don’t make sense and for situation like machine to machine communications such as: service to service, daemon to backend, CLI client to internal service, IoT tools, etc., the key aspect of these communications lies on the fact that the element to establish trust in the system is the client.

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