restsharp/RestSharp

Health v2 · maintenance only

Adoption not part of the score

9824 stars · 2307 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

RestSharp is a lightweight REST and HTTP API client library for .NET, built as a wrapper around HttpClient. It adds convenient parameter handling, JSON/XML/CSV serialization, and built-in authentication support on top of the standard HttpClient.

Use cases

• call REST APIs from C# with automatic JSON serialization
• add query, header, cookie, and URL segment parameters to HTTP requests
• authenticate against APIs with basic auth or OAuth2 token refresh
• send multipart form data and file uploads over HTTP
• deserialize API responses into strongly-typed C# objects
• integrate an HTTP client with Microsoft dependency injection and IHttpClientFactory

When to choose

• you're a .NET developer who wants a friendlier API than raw HttpClient for REST calls
• you need built-in serialization/deserialization of JSON, XML, or CSV request and response bodies
• you want convenient authentication support including OAuth2 token lifecycle handling
• you need easy handling of parameters, cookies, redirects, and multipart forms

When to avoid

• you're happy with plain HttpClient and prefer zero extra dependencies
• you need a full-featured HTTP client with advanced low-level control beyond what the wrapper exposes
• you require guaranteed fast issue resolution - the project has a single maintainer
• you're on a legacy RestSharp version below v107, since the API surface changed significantly

Facets

library · maturity stable

http-client serialization auth web-development apis backend developer-tools dotnet cross-platform rest-client http-api nuget csharp json-serialization oauth2 dependency-injection

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