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Seven Weekly Cursor Rules for Senior .NET Engineers, October 12-18, 2026

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A weekly digest from the Agentic Architect blog offers one opinionated rule per weekday for senior C#/.NET engineers using Cursor. The rules cover practices such as propagating CancellationToken through async methods, using IHttpClientFactory instead of new HttpClient(), and injecting TimeProvider rather than reading DateTime.Now. Other guidance recommends MapGroup and endpoints for .NET 9 services, FluentValidation for MediatR requests, structured ILogger templates, and keeping database logic within the Infrastructure layer. The digest also promotes a free sample Cursor rule file and a paid full kit priced at £9.00.

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