npm Registry

API

Programmatic access to Node.js package metadata from the npm Registry

Overview

The npm Registry API enables RESTful querying of Node.js package information, including versions, dependencies, maintainers, publication dates, and license details. Key endpoints include /package/{name} for package overview and /package/{name}/versions for all available releases. Responses are in JSON format, making integration simple for development tools, CI/CD pipelines, or custom package discovery platforms. It supports public package access without authentication, though rate limits apply to high-volume requests.

Example Integration (JavaScript)

script.js JS


fetch('https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful endpoints
JSON response format
No auth for public packages
Access to package versions & dependencies
Maintainer and license metadata

Frequently Asked Questions

? Is the npm Registry API free to use?

Yes, the API is free for accessing public package information without any cost.

? Does it require an API Key?

No, authentication is not needed for public packages, but private package access requires npm tokens.

? What is the response format?

All responses are in JSON, including detailed metadata like versions, dependencies, and maintainers.

Top Alternatives

Yarn Registry API Search Google

jsDelivr Package Metadata API Search Google

Tool Info

Pricing Free

Category Development

Platform Public API

Pros

⊕ Easy to integrate into workflows
⊕ Comprehensive package details
⊕ Well-documented specifications
⊕ Free public access

Cons

⊖ Rate limits for high-volume use
⊖ No official SLA
⊖ Private package access requires auth
⊖ Occasional peak-time latency