Microsoft .NET website screenshot

Microsoft .NET

Microsoft .NET is a free, open-source, cross-platform developer platform for building many different types of applications. It includes the .NET runtime, base class libraries, and frameworks such as ASP.NET Core for building web APIs and services. The .NET API browser provides comprehensive reference documentation across the .NET Runtime, ASP.NET Core, Entity Framework, and Azure SDK libraries.

Microsoft .NET publishes 1 API on the APIs.io network: ASP.NET Core Web API. Tagged areas include .NET, ASP.NET Core, Azure SDK, Cross-Platform, and Framework.

Microsoft .NET’s developer surface includes developer portal, getting-started guide, documentation, engineering blog, support, and 6 more developer resources.

38.6/100 thin ▬ flat Agent 19/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
2 APIs
.NETASP.NET CoreAzure SDKCross-PlatformFrameworkRuntimeWeb API

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 38.6/100 · thin
Contract Quality 8.1 / 25
Developer Ergonomics 7.0 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 6.7 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/microsoft-dotnet: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

.NET API Browser

Comprehensive reference documentation for all .NET APIs including the .NET Runtime, base class libraries, ASP.NET Core, Entity Framework, and Azure SDK libraries. Browse types, ...

ASP.NET Core Web API

Framework for building RESTful web APIs and HTTP services with .NET. Includes routing, model binding, validation, authentication, OpenAPI integration via Swashbuckle and the bui...

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Microsoft Dotnet Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Microsoft Dotnet Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Microsoft Dotnet Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
name: Microsoft .NET
description: Microsoft .NET is a free, open-source, cross-platform developer platform for building many different types of
  applications. It includes the .NET runtime, base class libraries, and frameworks such as ASP.NET Core for building web APIs
  and services. The .NET API browser provides comprehensive reference documentation across the .NET Runtime, ASP.NET Core,
  Entity Framework, and Azure SDK libraries.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://www.microsoft.com/favicon.ico
url: https://dotnet.microsoft.com/
created: '2026-03-13'
modified: '2026-04-28'
specificationVersion: '0.18'
tags:
- .NET
- ASP.NET Core
- Azure SDK
- Cross-Platform
- Framework
- Runtime
- Web API
apis:
- name: .NET API Browser
  description: Comprehensive reference documentation for all .NET APIs including the .NET Runtime, base class libraries, ASP.NET
    Core, Entity Framework, and Azure SDK libraries. Browse types, members, namespaces, and assemblies across supported .NET
    versions.
  image: https://www.microsoft.com/favicon.ico
  humanURL: https://learn.microsoft.com/en-us/dotnet/api/
  tags:
  - .NET
  - API Reference
  - Framework
  - Runtime
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/dotnet/api/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/dotnet/core/introduction
  - type: GitHubOrganization
    url: https://github.com/dotnet
  - type: SDKs
    url: https://dotnet.microsoft.com/en-us/download
  - type: ReleaseNotes
    url: https://learn.microsoft.com/en-us/dotnet/core/releases-and-support
- name: ASP.NET Core Web API
  description: Framework for building RESTful web APIs and HTTP services with .NET. Includes routing, model binding, validation,
    authentication, OpenAPI integration via Swashbuckle and the built-in Microsoft.AspNetCore.OpenApi package, minimal APIs,
    and controller-based APIs.
  image: https://www.microsoft.com/favicon.ico
  humanURL: https://learn.microsoft.com/en-us/aspnet/core/web-api/
  tags:
  - ASP.NET Core
  - OpenAPI
  - REST
  - Web API
  - Web Framework
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/aspnet/core/web-api/
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/aspnet/core/tutorials/first-web-api
  - type: OpenAPI
    url: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/openapi/overview
  - type: Minimal APIs
    url: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/minimal-apis/overview
  - type: Authentication
    url: https://learn.microsoft.com/en-us/aspnet/core/security/authentication/
  - type: GitHub
    url: https://github.com/dotnet/aspnetcore
common:
- type: VulnerabilityDisclosure
  url: security/microsoft-dotnet-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/microsoft-dotnet-domain-security.yml
- type: Portal
  url: https://dotnet.microsoft.com/
- type: GitHubOrganization
  url: https://github.com/dotnet
- type: GettingStarted
  url: https://dotnet.microsoft.com/en-us/learn
- type: Documentation
  url: https://learn.microsoft.com/en-us/dotnet/
- type: Blog
  url: https://devblogs.microsoft.com/dotnet/
- type: Community
  url: https://dotnet.microsoft.com/en-us/platform/community
- type: Support
  url: https://support.microsoft.com/
- type: TermsOfService
  url: https://www.microsoft.com/en-us/legal/terms-of-use
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com