Zero Two One — an agentic product framework that takes new products from point 0 (idea) to point 1 (MVP) via project-level refinement loops and Spec Kit-driven feature delivery.

An NPM/ Deno package which returns a quote by Zero Two from the anime DARLING in the FRANXX in string form.

Multi device wa bot created by Team Zero Two.

Is this value negative zero? === will lie to you

Spend guardrails and per-agent policies for x402 payments on Hedera — SQLite-backed, framework-agnostic.

Infinite scroll component for React. Zero runtime dependencies, IntersectionObserver-based, TypeScript-first. Window scroll, fixed-height, and custom container modes. Pull-to-refresh and inverse (chat) scroll included.

🎩 Lightweight CSS-in-JS solution for npm packages

Parse an SMTP (RFC-5321) address

Convert numbers to words in 70+ languages with zero dependencies. Supports BigInt, decimals, and browser/Node.js environments.

Common Ethereum constants used for ethers.

A little helper for handling strings containing zero width control characters, ANSI styling, whitespaces, newlines, 💩, etc.

Set a function's length property

returns the next highest power of two

Two-factor authentication for Node.js. One-time passcode generator (HOTP/TOTP) with support for Google Authenticator.

Test if a double-precision floating-point numeric value is negative zero.

Test if a double-precision floating-point numeric value is positive zero.

Operations for two-dimensional polygons.

Zero dependency streaming tar parser and writer for JavaScript.

Zero-fill a number to the given size.

A Software Development Kit (SDK) for Zero-Knowledge Transactions