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 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.8/100 developing ▬ flat Agent 25/100 agent aware open core · MIT Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve

1 APIs

npm Registry Package Managerprivate-registryProxy Node.js Open-Source Self-Hosted YARNpnpmDocker Kubernetes

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 40.8/100 · developing

Contract Quality 11.4 / 20

Developer Ergonomics 3.0 / 16

Access Clarity 4.6 / 16

Operational Transparency 3.3 / 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 — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

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/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

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

Verdaccio npm Registry API

The Verdaccio npm Registry REST API implements the CommonJS Compliant Package Registry specification, providing endpoints to publish, retrieve, search, and delete npm packages. ...

Verdaccio dist-tags API

Manage dist-tags for packages

Verdaccio packages API

Retrieve package metadata and tarballs

Verdaccio profile API

User profile management

Verdaccio publish API

Publish, update, and unpublish packages

Verdaccio search API

Search the registry

Verdaccio tokens API

API token management

Verdaccio user API

User authentication and management

Verdaccio utility API

Utility endpoints

Scroll for all 9

Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Verdaccio npm Registry dist-tags API

OPEN COLLECTION

Verdaccio npm Registry dist-tags packages API

OPEN COLLECTION

Verdaccio npm Registry dist-tags profile API

OPEN COLLECTION

Verdaccio npm Registry dist-tags publish API

OPEN COLLECTION

Verdaccio npm Registry dist-tags search API

OPEN COLLECTION

Verdaccio npm Registry dist-tags tokens API

OPEN COLLECTION

Verdaccio npm Registry dist-tags user API

OPEN COLLECTION

Verdaccio npm Registry dist-tags utility API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Verdaccio Plans Pricing

2 plans

PLANS

FinOps 1

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

Verdaccio Finops

FINOPS

Semantic Vocabularies 1

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

Verdaccio Context

35 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Verdaccio API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 3

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

Verdaccio Package Manifest

8 properties

JSON SCHEMA

Verdaccio Publish Request

6 properties

JSON SCHEMA

Verdaccio Search Results

3 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Verdaccio Login Request Example

6 fields

EXAMPLE

Verdaccio Publish Package Example

6 fields

EXAMPLE

Verdaccio Search Results Example

3 fields

EXAMPLE

Verdaccio Token Create Example

3 fields

EXAMPLE

Security Posture 2

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

Verdaccio Authentication

http · 2 schemes

SECURITY

Verdaccio Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Verdaccio Agentic Access

24 operations · 11 acting · 1 human-in-the-loop

24 operations · 11 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrg

GitHubOrg

Access & Security 3

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

IssueTracker

Releases

Discord

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

License

License

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
deliveryModel:
  model: open-core
  license: MIT
  open_source: true
  commercial: true
  callable_host: false
  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: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: loopback
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  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: '0.23'
tags:
- npm
- Registry
- Package Manager
- private-registry
- Proxy
- Node.js
- Open-Source
- Self-Hosted
- YARN
- pnpm
- Docker
- Kubernetes
tags_raw:
- 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - 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
  tags_raw:
  - utility
  properties:
  - type: OpenAPI
    url: openapi/verdaccio-utility-api-openapi.yml
common:
- type: IssueTracker
  url: https://github.com/verdaccio/verdaccio/issues
- type: Releases
  url: https://github.com/verdaccio/verdaccio/releases
- type: SecurityPolicy
  url: https://github.com/verdaccio/verdaccio/blob/master/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/verdaccio/verdaccio/blob/master/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/verdaccio/verdaccio/blob/master/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/verdaccio/verdaccio/blob/master/LICENSE
- 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

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