Verdaccio

Verdaccio is an open-source, lightweight private npm proxy registry built in Node.js that enables organizations to host, cache, and manage packages privately. It implements the CommonJS Compliant Package Registry specification and provides a REST API for publishing, searching, and managing npm packages in self-hosted or cloud-deployed environments. Verdaccio supports JWT and Basic Auth token authentication, rate limiting, pluggable storage backends, and seamless proxying of upstream registries such as npmjs.org.

Verdaccio publishes 8 APIs on the APIs.io network, including dist-tags API, packages API, profile API, and 5 more. Tagged areas include npm, registry, package-manager, private-registry, and proxy.

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

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

🌐 Visit website 📡 Source on GitHub

40.3/100 thin ▬ flat Agent 37/100 agent ready Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessFreemiumSelf serve⚡ Free to try

9 APIs

npmregistrypackage-managerprivate-registryproxynodejsopen-sourceself-hostedyarnpnpmdockerkubernetes

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 40.3/100 · thin

Contract Quality 16.0 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 0.7 / 13

Governance 7.0 / 12

Discoverability 6.5 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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/verdaccio: 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 9

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

FinOps 1

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

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Examples 4

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

Discord

Discord

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

Blog

Blog

Bluesky

Bluesky

Other 2

Properties that don't map to a standard resource type

Docker

Docker

Sponsorship

Sponsorship

Source (apis.yml)

aid: verdaccio
name: Verdaccio
description: Verdaccio is an open-source, lightweight private npm proxy registry built in Node.js that enables organizations
  to host, cache, and manage packages privately. It implements the CommonJS Compliant Package Registry specification and provides
  a REST API for publishing, searching, and managing npm packages in self-hosted or cloud-deployed environments. Verdaccio
  supports JWT and Basic Auth token authentication, rate limiting, pluggable storage backends, and seamless proxying of upstream
  registries such as npmjs.org.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/verdaccio.png
url: https://raw.githubusercontent.com/api-evangelist/verdaccio/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.19'
tags:
- npm
- registry
- package-manager
- private-registry
- proxy
- nodejs
- open-source
- self-hosted
- yarn
- pnpm
- docker
- kubernetes
apis:
- aid: verdaccio:verdaccio-npm-registry-api
  name: Verdaccio npm Registry API
  description: The Verdaccio npm Registry REST API implements the CommonJS Compliant Package Registry specification, providing
    endpoints to publish, retrieve, search, and delete npm packages. It supports JWT tokens and Basic Auth for authentication
    and mirrors the standard npm registry protocol so any npm, yarn, or pnpm client can interact with it without modification.
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - npm
  - packages
  - registry
  - publish
  - search
  - proxy
  properties:
  - type: Documentation
    url: https://www.verdaccio.org/docs/
  - type: Authentication
    url: https://www.verdaccio.org/docs/authentication/
  - type: Configuration
    url: https://www.verdaccio.org/docs/configuration/
  - type: GitHubRepository
    url: https://github.com/verdaccio/verdaccio
  - type: Docker
    url: https://hub.docker.com/r/verdaccio/verdaccio
  - type: HelmChart
    url: https://charts.verdaccio.org
  contact:
  - FN: Verdaccio Community
    url: https://discord.gg/7qWJxBf
- aid: verdaccio:verdaccio-dist-tags-api
  name: Verdaccio dist-tags API
  description: Manage dist-tags for packages
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - dist-tags
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-dist-tags-api-openapi.yml
- aid: verdaccio:verdaccio-packages-api
  name: Verdaccio packages API
  description: Retrieve package metadata and tarballs
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - packages
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-packages-api-openapi.yml
- aid: verdaccio:verdaccio-profile-api
  name: Verdaccio profile API
  description: User profile management
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - profile
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-profile-api-openapi.yml
- aid: verdaccio:verdaccio-publish-api
  name: Verdaccio publish API
  description: Publish, update, and unpublish packages
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - publish
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-publish-api-openapi.yml
- aid: verdaccio:verdaccio-search-api
  name: Verdaccio search API
  description: Search the registry
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - search
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-search-api-openapi.yml
- aid: verdaccio:verdaccio-tokens-api
  name: Verdaccio tokens API
  description: API token management
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - tokens
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-tokens-api-openapi.yml
- aid: verdaccio:verdaccio-user-api
  name: Verdaccio user API
  description: User authentication and management
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - user
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-user-api-openapi.yml
- aid: verdaccio:verdaccio-utility-api
  name: Verdaccio utility API
  description: Utility endpoints
  humanURL: https://www.verdaccio.org/docs/
  baseURL: http://localhost:4873
  tags:
  - utility
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-utility-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/verdaccio-agentic-access.yml
- type: DomainSecurity
  url: security/verdaccio-domain-security.yml
- type: Authentication
  url: authentication/verdaccio-authentication.yml
- type: Website
  url: https://www.verdaccio.org/
- type: Documentation
  url: https://www.verdaccio.org/docs/
- type: GitHubOrg
  url: https://github.com/verdaccio
- type: Blog
  url: https://www.verdaccio.org/blog/
- type: Discord
  url: https://discord.gg/7qWJxBf
- type: Bluesky
  url: https://bsky.app/profile/verdaccio.org
- type: Docker
  url: https://hub.docker.com/r/verdaccio/verdaccio
- type: Sponsorship
  url: https://opencollective.com/verdaccio
- type: Plans
  url: plans/verdaccio-plans-pricing.yml
- type: RateLimits
  url: rate-limits/verdaccio-rate-limits.yml
- type: FinOps
  url: finops/verdaccio-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com