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.

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

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

Parse an SMTP (RFC-5321) address

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.

Common Ethereum constants used for ethers.

Set a function's length property

🎩 Lightweight CSS-in-JS solution for npm packages

Operations for two-dimensional polygons.

Zero dependency streaming tar parser and writer for JavaScript.

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

A JavaScript library that breaks strings into their individual user-perceived characters (including emojis!)

An AST parser for ICU MessageFormat strings

Transform a string between `camelCase`, `PascalCase`, `Capital Case`, `snake_case`, `kebab-case`, `CONSTANT_CASE` and others

A JavaScript text diff implementation.

returns the next highest power of two

A better Object.defineProperty()

Determining the similarity of alphanumeric text based on trigram matching