The tutorial focuses on implementing an automated pull request (PR) approval system using the Codestral model from Mistrals and Cerebrium. The goal is to reduce delays caused by manual reviews, enhance team productivity, and maintain high code quality. To achieve this, a mini-app is created that automatically approves PRs if they meet certain conditions, such as passing unit and e2e tests, having minor recommended changes, and low complexity. The application uses Cerebrium's Secrets functionality to securely connect with external resources like GitHub and Hugging Face, and Outlines for predictable output generation. The main.py file sets up an endpoint to receive webhook notifications from GitHub, downloads code changes, passes them to the Codestral model, and determines whether to approve or comment on the PR based on the model's output. The application is deployed to Cerebrium, which scales it up automatically based on demand and only charges for compute used. The tutorial also discusses further implementation suggestions, such as implementing a self-correcting agent and comments on specific lines.