starknet-io/starknet.js

Installation

# latest official release (main branch)
$ npm install starknet

# or for latest pre-release version (develop branch)
$ npm install starknet@next

# or for latest beta release version (beta branch)
$ npm install starknet@beta

Import starknet and use the API.

🌐 Documentation

How to Guides :book: & API 💻

Play with Code Examples :video_game:

🤖 Using AI

AI training data about starknet.js is often outdated. To give your AI coding agent accurate, up-to-date guidance, install the official starknet.js skill (skills/starknet-js/). It works with Claude Code, Codex, Cursor, Gemini CLI, and any other agent supporting the open Agent Skills standard.

npx skills add starknet-io/starknet.js

or copy the skill files directly:

mkdir -p ~/.claude/skills/starknet-js && curl -s --output-dir ~/.claude/skills/starknet-js --remote-name-all "https://raw.githubusercontent.com/starknet-io/starknet.js/develop/skills/starknet-js/{SKILL.md,calldata.md,interacting.md}"

This command installs into Claude Code’s skills folder — adapt the target directory for other agents.

✏️ Contributing

If you consider to contribute to this project please read CONTRIBUTING.md first.

You can also join our dedicated channel for Starknet.js on the Starknet Discord

❤️ Special Thanks

Special thanks to all the contributors, especially to:

• Sean (@0xs34n), the original creator of Starknet.js!

• Janek (@janek26) and Dhruv (@dhruvkelawala) from Argent

• Toni (@tabaktoni), Petar (@penovicp) and Ivan (@ivpavici) from SpaceShard

• Philippe ROSTAN (@PhilippeR26)

…and of course the StarkWare team for their dedicated support!

This library would not be possible without these rockstars.

📜 License

Copyright © 2026 StarkWare

Licensed under the MIT license.