Convert a PDF (URL or ArrayBuffer) into clean HTML with structural tagging — headings, lists, footnotes, code blocks, bold/italic. Works in Node.js, Cloudflare Workers, and browser environments.

Domain Rank Top Million domains, source names, duplicates, and favicons

ECMAScript (ESTree) AST walker

NotebookLM API via Cloudflare Containers — on-demand Python sandbox that sleeps when idle

Lightweight Babel AST traversal

The drop-in connection UI for pairing a browser app with an external agent harness (Claude Code, GitHub Copilot CLI, ...) over a WebMCP relay. It is a single chat-bubble icon with a status indicator plus a connection modal, and the human-in-the-loop confi

<p align="center"> <img src="https://i.imgur.com/ir3twBm.png" />

Library to walk OAS 3 schema objects and call a callback

Listen to realtime updates to your PostgreSQL database

Tavily integration for LangChain.js

Chat research agent UI: conversation window, article reader, search config, file uploads, and chat history

Anthropic Sandbox Runtime (ASRT) - A general-purpose tool for wrapping security boundaries around arbitrary processes

Finite State Machines and Statecharts for the Modern Web.

HTTP State Management Utilities

Zero dependency React transition state machine.

A tool for walking ASTs

Multi-provider language generation toolkit using Vercel AI SDK - generate responses with 10+ LLM providers including OpenAI, Anthropic, Google, and more.

Enter/exit a state

Spectrum UI components in React

A JS module that takes audio and converts it to MIDI with machine learning