Libraries

Twenty-two open-source .NET libraries under the SyntaxCircus.* namespace, published on NuGet and maintained on a best-effort basis. We use them in our own products, alongside plenty of other people's. Take what's useful; fork the rest.

dotnet add package SyntaxCircus.<Name>

Namespace index

SyntaxCircus.AspNetCore.Authentication, Common, Serilog · Blazor.Auth, Components, Seo, Tracking · Maui.Environments, StoreKit, TokenStorage · Common, Credentials, DotEnv, Email, EntityFrameworkCore.Postgres, FancyBlazor, Http.Resilience, Observability, RevenueCat, RevenueCat.Maui, Storage, AI.Providers

Library catalog
No.	Package	What it does
No. 01	`SyntaxCircus.AspNetCore.Authentication`	JWT bearer and pluggable API-key authentication for ASP.NET Core APIs.
No. 02	`SyntaxCircus.AspNetCore.Common`	Host boilerplate: correlation IDs, security headers, and a composable exception-handling bootstrap.
No. 03	`SyntaxCircus.AspNetCore.Serilog`	A standard Serilog bootstrap for ASP.NET Core hosts and worker services.
No. 04	`SyntaxCircus.Blazor.Auth`	OIDC token forwarding, refresh, and caching for Blazor Server apps calling a backend API.
No. 05	`SyntaxCircus.Blazor.Components`	Reusable, semantic Razor components, deliberately UI-framework-agnostic.
No. 06	`SyntaxCircus.Blazor.Seo`	Meta and social tags, typed Schema.org JSON-LD, canonical URLs, and sitemap endpoints for Blazor sites.
No. 07	`SyntaxCircus.Blazor.Tracking`	Consent-aware analytics — self-hosted Umami, GA4, or GTM — with an accessible consent UI.
No. 08	`SyntaxCircus.Common`	Small shared contracts: paged results, claims helpers, and a current-user service.
No. 09	`SyntaxCircus.Credentials`	A cross-platform desktop credential vault for Windows, macOS, and Linux.
No. 10	`SyntaxCircus.DotEnv`	Precedence-safe dotenv configuration loading for ASP.NET Core hosts.
No. 11	`SyntaxCircus.Email`	An email-sending abstraction with MailKit SMTP, null, and in-memory implementations.
No. 12	`SyntaxCircus.EntityFrameworkCore.Postgres`	Auditable entities, advisory-locked migrate-on-startup, and snake_case naming for EF Core with Npgsql.
No. 13	`SyntaxCircus.FancyBlazor`	Composable visual effects for Blazor — backgrounds, borders, parallax, shimmer — with no JS tooling.
No. 14	`SyntaxCircus.Http.Resilience`	A typed API client base and Polly-backed resilient HttpClient registration.
No. 15	`SyntaxCircus.Maui.Environments`	Runtime environment switching for .NET MAUI apps shipping one binary across backends.
No. 16	`SyntaxCircus.Maui.StoreKit`	An iOS StoreKit 2 shim for reliable TestFlight, App Store, and Xcode detection.
No. 17	`SyntaxCircus.Maui.TokenStorage`	Secure auth-token storage for .NET MAUI apps, split across secure storage and preferences.
No. 18	`SyntaxCircus.Observability`	Opt-in OpenTelemetry/OTLP, Serilog OTLP, and Sentry-compatible error reporting.
No. 19	`SyntaxCircus.RevenueCat`	Backend RevenueCat integration: webhook verification and typed REST clients.
No. 20	`SyntaxCircus.RevenueCat.Maui`	Client-side RevenueCat helpers for .NET MAUI: initialization, identity sync, and purchase orchestration.
No. 21	`SyntaxCircus.Storage`	A stream-based file and blob storage abstraction with a local-disk provider.
No. 22	`SyntaxCircus.AI.Providers`	Typed HTTP clients for the Anthropic Messages API and the Gemini generateContent API.