vlt

vlt (pronounced "volt") is a JavaScript package management company started by the creator of npm and former members of the npm core team, and backed by Accel. It ships the open source vlt package manager CLI, the npm-compatible vlt serverless registry (vsr) that runs on Cloudflare's edge network, and a hosted registry platform at vlt.io with user, token, and access management exposed through an npm-compatible registry API at registry.vlt.io.

vlt publishes 1 API on the APIs.io network. Tagged areas include Company, JavaScript, Package Management, Package Registry, and Developer Tools.

vlt’s developer surface includes CLI, changelog, authentication, documentation, getting-started guide, engineering blog, pricing, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.9/100 thin ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-23 · rubric v0.5
AccessFreemiumSelf serve⚡ Free to try
1 APIs
CompanyJavaScriptPackage ManagementPackage RegistryDeveloper ToolsCLIServerlessnpmDependency ManagementOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-23 · rubric v0.5
Composite quality — 42.9/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 10.0 / 20
Commercial Clarity 16.8 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
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/vlt: 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 1

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

vlt Serverless Registry (vsr) API

npm-compatible package registry API implemented by vsr, vlt's serverless registry. Exposes package publish/install endpoints (packuments, tarballs, dist-tags), user and token ma...

Pricing Plans 1

Published pricing tiers and plan structures.

Vlt Plans

4 plans

PLANS

Security Posture 3

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

Vlt Authentication

http-bearer/oidc-exchange · 4 schemes

SECURITY

Vlt Domain Security

TLSv1.3 · HSTS

SECURITY

Vlt Vulnerability Disclosure

disclosure policy published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle
 Conformance
Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 CLI
CLI
 GitHubOrganization
GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 Compliance
Compliance
 Security
Security

Operate 5

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 StatusPage
StatusPage
 Support
Support
 Community
Community
 Roadmap
Roadmap

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 6

The organization behind the API

Website
Website
 Blog
Blog
 BlogRSS
BlogRSS
 About
About
 Careers
Careers
 Press
Press

Other 1

Properties that don't map to a standard resource type

Benchmarks
Benchmarks

Source (apis.yml)

apis.yml Raw ↑ 
aid: vlt
name: vlt
description: vlt (pronounced "volt") is a JavaScript package management company started by the creator of npm and former members
  of the npm core team, and backed by Accel. It ships the open source vlt package manager CLI, the npm-compatible vlt serverless
  registry (vsr) that runs on Cloudflare's edge network, and a hosted registry platform at vlt.io with user, token, and access
  management exposed through an npm-compatible registry API at registry.vlt.io.
url: https://raw.githubusercontent.com/api-evangelist/vlt/refs/heads/main/apis.yml
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://github.com/vltpkg.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
x-tier: full
x-tier-reason: enriched-from-portfolio-lead
specificationVersion: '0.20'
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 11
  pass: local-v1
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- JavaScript
- Package Management
- Package Registry
- Developer Tools
- CLI
- Serverless
- npm
- Dependency Management
- Open Source
apis:
- aid: vlt:vlt-serverless-registry-api
  name: vlt Serverless Registry (vsr) API
  description: npm-compatible package registry API implemented by vsr, vlt's serverless registry. Exposes package publish/install
    endpoints (packuments, tarballs, dist-tags), user and token management, granular access control, search, audit, and ping
    routes. The hosted platform instance at registry.vlt.io is authentication-gated; self-hosted vsr instances serve their
    own OpenAPI document at /-/api and an interactive API reference at /-/docs.
  baseURL: https://registry.vlt.io
  humanURL: https://github.com/vltpkg/vsr
  tags:
  - Packages
  - Registry
  - Tokens
  - Access
  properties:
  - url: https://github.com/vltpkg/vsr
    type: Documentation
  - url: https://docs.vlt.io/cli/registries
    type: DeveloperPortal
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: VulnerabilityDisclosure
  url: security/vlt-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/vlt-domain-security.yml
- type: Packages
  url: packages/vlt-packages.yml
- type: SDKs
  url: packages/vlt-packages.yml
- type: LLMsTxt
  url: llms/vlt-llms.txt
- type: CLI
  url: cli/vlt-cli.yml
- type: ChangeLog
  url: changelog/vlt-changelog.yml
- type: Lifecycle
  url: lifecycle/vlt-lifecycle.yml
- type: Authentication
  url: authentication/vlt-authentication.yml
- type: Conformance
  url: conformance/vlt-conformance.yml
- type: Compliance
  url: https://www.vlt.io/security
- type: Plans
  url: plans/vlt-plans.yml
- type: Website
  url: https://www.vlt.io/
- type: Documentation
  url: https://docs.vlt.io/
- type: GettingStarted
  url: https://docs.vlt.io/cli
- type: Blog
  url: https://www.vlt.io/blog
- type: BlogRSS
  url: https://www.vlt.io/blog/rss.xml
- type: Pricing
  url: https://www.vlt.io/pricing
- type: SignUp
  url: https://www.vlt.io/sign-up
- type: Login
  url: https://www.vlt.io/sign-in
- type: TermsOfService
  url: https://www.vlt.io/terms
- type: PrivacyPolicy
  url: https://www.vlt.io/privacy
- type: Security
  url: https://www.vlt.io/security
- type: StatusPage
  url: https://status.vlt.io/
- type: GitHubOrganization
  url: https://github.com/vltpkg
- type: Support
  url: https://www.vlt.io/contact
- type: Community
  url: https://discord.gg/qdbXTqxZzZ
- type: Roadmap
  url: https://github.com/vltpkg/vsr/blob/main/info/ROADMAP.md
- type: About
  url: https://www.vlt.io/about
- type: Careers
  url: https://www.vlt.io/careers
- type: Press
  url: https://www.vlt.io/press
- type: Benchmarks
  url: https://benchmarks.vlt.sh/