Package

o1js

TypeScript framework for zk-SNARKs and zkApps

v3.1.0, 23 Sept 2026Apache-2.0ESM + CommonJSTypes: BundledBlockchain and Web3

$ npm install o1js

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 5.5k; +3% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 7; Direct, from package.json
Last release: 1 day ago; v3.1.0
GitHub stars: 607; 171 forks
Open issues / PRs: 165 / 85
Contributors: -
Commits, last 52 weeks: 1,013

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

5,533 downloads last week, 16,438 in the last month. The 12-month change of +3% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: -
Latest version: 3.1.0, 23 Sept 20261 day ago
First published: -
Last push to GitHub: 19 Sept 20265 days before the snapshot
Repository archived: No
Open issues: 165
Open pull requests: 85
Commits, last 52 weeks: 1,013
Dependents on npm: 66

Major versions

Recent releases

Compatibility

Module format: ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types: Bundled
Node.js engine range: >=22.19.5
Runtimes: -
Unpacked size (npm): 168.3 MB
Dependencies (7): tslibblakejscachedir@noble/hashesstacktrace-jsreflect-metadatalibsodium-wrappers-sumo

Install

npm install o1js

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/o1js@3.1.0/
unpkghttps://unpkg.com/o1js@3.1.0/
esm.shhttps://esm.sh/o1js@3.1.0

Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): downloads_week 5533 < 10000.