NuGet

NuGet is the package manager for .NET, providing a centralized repository for developers to discover, share, and consume reusable code libraries. The NuGet developer platform exposes a set of HTTP APIs that enable programmatic access to package search, metadata retrieval, content download, catalog browsing, and package publishing against the nuget.org feed.

NuGet publishes 3 APIs on the APIs.io network: Package Publish API, Registration API, and Service Index API. Tagged areas include Package Management, .NET, Packages, Dependencies, and Software Distribution.

The NuGet catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

NuGet’s developer surface includes authentication, developer portal, documentation, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.5/100 developing ▬ flat Agent 23/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

2 APIs 1 MCP Servers

Package Management .NET Packages Dependencies Software Distribution Registry

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 44.5/100 · developing

Contract Quality 11.6 / 20

Developer Ergonomics 5.3 / 16

Access Clarity 7.6 / 16

Operational Transparency 1.1 / 10

Contract Governance 0.9 / 10

Discoverability 4.7 / 8

Open Source Surface 10.0 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Nuget Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nuget Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Nuget Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Nuget Context

0 classes · 8 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NuGet API Rules

6 rules · 4 warnings 2 info

SPECTRAL

1 properties

JSON SCHEMA

Vulnerability

2 properties

JSON SCHEMA

Scroll for all 29

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Nuget Structure

0 properties

JSON STRUCTURE

Security Posture 3

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

Nuget Authentication

apiKey · 1 scheme

SECURITY

Nuget Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Nuget Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Nuget Agentic Access

16 operations · 3 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

Login

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

MCPServer

MCPServer

Build 1

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 3

Pricing, plans, and the legal terms of use

License

License

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: nuget
name: NuGet
description: NuGet is the package manager for .NET, providing a centralized repository for developers to discover, share,
  and consume reusable code libraries. The NuGet developer platform exposes a set of HTTP APIs that enable programmatic access
  to package search, metadata retrieval, content download, catalog browsing, and package publishing against the nuget.org
  feed.
kind: contract
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nuget.png
tags:
- Package Management
- .NET
- Packages
- Dependencies
- Software Distribution
- Registry
url: https://raw.githubusercontent.com/api-evangelist/nuget/refs/heads/main/apis.yml
created: '2025-03-05'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: nuget:nuget-package-publish-api
  name: NuGet Package Publish API
  description: Endpoints for pushing new packages, deleting or unlisting packages, and relisting previously unlisted packages
    on a NuGet feed.
  humanURL: https://learn.microsoft.com/en-us/nuget/api/overview
  tags:
  - Package Publish
  properties:
  - type: OpenAPI
    url: openapi/nuget-package-publish-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/service-index
  - type: GitHubRepository
    url: https://github.com/NuGet/NuGetGallery
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/registration-base-url-resource
- aid: nuget:nuget-registration-api
  name: NuGet Registration API
  description: Package registration endpoints for fetching metadata about packages, organized into an index, pages, and leaves
    hierarchy.
  humanURL: https://learn.microsoft.com/en-us/nuget/api/overview
  tags:
  - Registration
  properties:
  - type: OpenAPI
    url: openapi/nuget-registration-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/service-index
  - type: GitHubRepository
    url: https://github.com/NuGet/NuGetGallery
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/registration-base-url-resource
- aid: nuget:nuget-service-index-api
  name: NuGet Service Index API
  description: The service index is the entry point for the NuGet V3 API. It is a JSON document that lists all available resources
    and their capabilities.
  humanURL: https://learn.microsoft.com/en-us/nuget/api/overview
  tags:
  - ServiceIndex
  tags_raw:
  - Service Index
  properties:
  - type: OpenAPI
    url: openapi/nuget-service-index-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/overview
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/service-index
  - type: GitHubRepository
    url: https://github.com/NuGet/NuGetGallery
  - type: Documentation
    url: https://learn.microsoft.com/en-us/nuget/api/registration-base-url-resource
common:
- type: CodeOfConduct
  url: https://github.com/NuGet/NuGetGallery/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/NuGet/NuGetGallery/blob/main/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/NuGet/NuGetGallery/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/nuget-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/nuget-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/nuget-domain-security.yml
- type: Authentication
  url: authentication/nuget-authentication.yml
- type: Portal
  url: https://learn.microsoft.com/en-us/nuget/
- type: Documentation
  url: https://learn.microsoft.com/en-us/nuget/api/overview
- type: Website
  url: https://www.nuget.org/
- type: PrivacyPolicy
  url: https://privacy.microsoft.com/en-us/privacystatement
- type: TermsOfService
  url: https://www.nuget.org/policies/Terms
- type: Blog
  url: https://devblogs.microsoft.com/nuget/
- type: Login
  url: https://www.nuget.org/users/account/LogOn
- name: MCP Server
  url: https://devblogs.microsoft.com/dotnet/nuget-mcp-server-preview/
  type: MCPServer
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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