The platform to build agents — a terminal, a runtime, and a toolkit for building, running, and deploying reliable AI agents.

Microsoft Azure Functions NodeJS Framework

Default model selection shared by Agent entry points

Easily display interactive 3D models on the web and in AR!

NestJS templated generator

An extension lib for jest

Synchronous Promise-like prototype to use in testing where you would have used an ES6 Promise

Makes all modules in Node get loaded in strict mode.

JavaScript/TypeScript-native RPC library with Promise Pipelining

Library to help write libraries that accept both promises and callbacks.

Replace tokens from a string with values of an object

Progress bar updates at a distance

Base classes for IAB VAST handling.

A lightweight JavaScript library is built on top of route-recognizer and rsvp.js to provide an API for handling routes

Artifacts for any coding agent. Publish what Claude Code, Codex, Cursor or Gemini CLI builds to a durable link, with versions and comments on the page.

Core types and registry utilities for TokenLens (model metadata).

Claude Code usage-burn HUD: transcript scanner, week-anchored rollup, and a dependency-free statusline renderer

Model-facing ask_user_question tool over the ctx.userInteraction seam

TUF metadata models

Abstract user-questions seam (ctx.userQuestions) for asking the human during agent runs