# FastEndpoints/FastEndpoints

A light-weight REST API development framework for ASP.NET 8 and newer.

Repository: https://github.com/FastEndpoints/FastEndpoints
Canonical: https://ross.abutalabs.com/products/fastendpoints
Homepage: https://fast-endpoints.com
Language: C#
License: MIT
License Family: permissive
Topics: web-api, vertical-slice-architecture, repr-pattern, minimal-api, aspnet, fastendpoints
Last push: 2026-08-25T02:35:49+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 1812, "days_push": 9, "days_rel": 13, "gap_med": 32.5, "n_releases_24m": 17}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5999, forks 385 (observed 2026-08-28T04:09:34.142771+00:00)

## What it is
FastEndpoints is a lightweight REST API development framework for ASP.NET 8 and newer that serves as a developer-friendly alternative to Minimal APIs and MVC controllers. It encourages the REPR (Request-Endpoint-Response) design pattern, enabling endpoint creation with virtually no boilerplate while maintaining performance on par with Minimal APIs.

## Use cases
- build rest apis in asp.net without mvc controllers
- replace minimal api boilerplate with structured endpoints
- create endpoints using vertical slice architecture in c#
- add jwt bearer auth and api versioning to asp.net endpoints
- write integration tests for asp.net endpoints without routes
- stream real-time data with server-sent events in asp.net

## When to choose
- you want a structured, boilerplate-free alternative to MVC controllers or raw Minimal APIs in ASP.NET
- you prefer the REPR pattern or vertical slice architecture over controller-based organization
- you need built-in validation, auth, versioning, and integration testing support out of the box
- performance matters and you want benchmarks comparable to Minimal APIs

## When to avoid
- your project targets ASP.NET versions older than .NET 8
- you are building non-HTTP services like gRPC, background workers, or desktop apps
- your team is heavily invested in MVC conventions and tooling that depends on controllers
- you need a full-stack framework with frontend capabilities rather than just an API layer

## Facets
- artifact type: framework
- maturity: active
- function: api-framework, web-framework, routing, middleware, auth, form-handling, testing
- domain: web-development, backend, apis, developer-tools
- platform: dotnet, cross-platform
- tags: aspnet-core, minimal-apis, rest-api, repr-pattern, vertical-slice-architecture, csharp, endpoint-based, mvc-alternative, api-versioning, server-sent-events, jwt-bearer, integration-testing, web-server

## Member repositories
- FastEndpoints/FastEndpoints (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:34.142771+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:49:49.199566+00:00, confidence not recorded.
  - readme: https://github.com/FastEndpoints/FastEndpoints (fetched 2026-08-28T04:09:34.142771+00:00, sha ed0bbd141b14)
  - homepage: https://fast-endpoints.com (fetched 2026-08-29T08:45:52.564270+00:00, sha 37be91a5e0f7)
  - site_page: https://fast-endpoints.com/docs/get-started (fetched 2026-08-29T08:45:52.568313+00:00, sha d75e45820002)
  - site_page: https://fast-endpoints.com/docs (fetched 2026-08-29T08:45:52.566697+00:00, sha 44136fa355b3)
- Data as of 2026-08-30T08:39:29.467469+00:00.