Project Overview

Purpose

FastEndpoints is a developer-oriented alternative to Minimal APIs and MVC for ASP.NET Core. It implements the REPR pattern (Request-Endpoint-Response) with low boilerplate. Public docs: https://fast-endpoints.com

Scope

Library monorepo, not a hosted product. Package inventory: monorepo-packages.md.

Area	Examples
Core HTTP	`FastEndpoints`, `FastEndpoints.Attributes`, `FastEndpoints.Core`
Messaging / jobs	`FastEndpoints.Messaging*`, `FastEndpoints.JobQueues`, `FastEndpoints.CommandRules`
Security / integrations	`FastEndpoints.Security`, `AspVersioning`, `OData`, `HealthChecks`
Docs / clients	`FastEndpoints.OpenApi`, `FastEndpoints.OpenApi.Kiota`, legacy `Swagger` / `ClientGen*`
Tooling / AOT	`FastEndpoints.Generator`, `FastEndpoints.Generator.Cli`
Testing	`FastEndpoints.Testing`, remote messaging testing
Addons (own version line)	`FastEndpoints.Mcp`, `FastEndpoints.A2A` (`Src/Agents/`)

Consumers

App developers targeting ASP.NET Core net8.0 / net9.0 / net10.0
NuGet consumers; nothing is deployed as a service from this repo

Capabilities

Endpoint discovery (reflection or source-generated DiscoveredTypes)
FluentValidation, pre/post processors, mappers
In-process command/event bus and gRPC remote messaging
Job queues (storage SPI) and HTTP request idempotency (AddIdempotency)
JWT/cookie auth, feature flags (IFeatureFlag), X402 payment helpers
OpenAPI (Microsoft.AspNetCore.OpenApi), AOT-oriented generation

Status

Core version: Src/Directory.Build.props <Version> (never cite OKF)
Agents versions: per-csproj under Src/Agents/
Solutions: FastEndpoints.slnx (primary), NativeAot.slnx (AOT)

Non-goals

Not a hosted product
Roadmap, sponsorship, and API catalog live in the docs site / changelog
Public doc pages: sibling ../FE-Docs/ (workflows.md)

Glossary

Term	Meaning
REPR	Request-Endpoint-Response
SUT / harness	Sample apps under `TestHarness/` used by integration tests
WAF	`WebApplicationFactory` via `FastEndpoints.Testing.AppFixture`
DiscoveredTypes	Source-generated type list for AOT-friendly registration

Sources

README.md
Src/Directory.Build.props
FastEndpoints.slnx