Verdaccio
Lightweight private npm registry server. Verdaccio enables publishing and serving private npm packages within an organization without paying for npm Pro/Enterprise or Artifactory. Also acts as a transparent proxy/cache for public npm packages, reducing CI/CD build times by caching commonly used packages. Simple setup (single Docker container) makes it the go-to solution for teams needing a private npm registry without heavy infrastructure.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Self-hosted — security depends on deployment configuration. Default htpasswd auth is basic; use LDAP or SAML plugins for enterprise-grade auth. TLS must be configured manually. MIT licensed.
⚡ Reliability
Best When
You need a simple private npm registry for internal packages or a local cache/proxy, and don't want to pay for npm Pro or operate Artifactory.
Avoid When
You need multi-language support, enterprise SSO/SAML, or are already on GitHub/GitLab which include package registries.
Use Cases
- • Host private npm packages for internal libraries within an organization without public npm Pro subscription or enterprise registry costs
- • Cache public npm packages locally to reduce CI/CD build times and protect against npm registry outages
- • Test npm publish and install workflows locally before publishing to public npm using Verdaccio as a local registry
- • Serve npm packages in air-gapped environments where public npm access is restricted by security policy
- • Mirror specific npm packages for offline development teams using Verdaccio's storage backend with S3 or local filesystem
Not For
- • Multi-language package registries — Verdaccio is npm-only; use Nexus or Artifactory for polyglot registries
- • Enterprise-scale with advanced features (SAML SSO, audit logs, vulnerability scanning) — use npm Enterprise, JFrog Artifactory, or GitHub Packages
- • Teams already on GitHub/GitLab who can use their built-in package registry — GitHub Packages or GitLab Package Registry are simpler
Interface
Authentication
htpasswd-based auth by default. Pluggable auth system supports LDAP, SAML (via plugins), and custom auth providers. npm login uses bearer tokens.
Pricing
Verdaccio is MIT open source. Free for personal and commercial use. Self-hosted infrastructure costs only.
Agent Metadata
Known Gotchas
- ⚠ Verdaccio .npmrc configuration must be set to point to the private registry — agents doing npm install in CI must have the correct registry URL configured in .npmrc or via environment variable
- ⚠ Package scopes (@organization/package) must be configured in Verdaccio's config.yaml to proxy or store correctly — undefined scopes fall back to the uplink (npm public registry)
- ⚠ Verdaccio's default storage is local filesystem — in Kubernetes/ephemeral environments, configure S3 or MinIO storage plugin for persistence across container restarts
- ⚠ Verdaccio 6.x requires Node.js 18+ — older Node.js versions must upgrade or use Verdaccio 5.x with different config format
- ⚠ Private package publish requires npm login to the Verdaccio registry — CI pipelines must authenticate before publish; use .npmrc with registry and _auth token configuration
- ⚠ Verdaccio's proxy uplink to npm public registry has retry/timeout settings — slow or unreliable uplink can cause npm install failures in CI; configure timeout and retry parameters in config
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Verdaccio.
Scores are editorial opinions as of 2026-03-06.