langgraph.json parser and graph loader (path:export) for skein-js.

Semantic tool retrieval for TypeScript agents, powered by Bun

In-memory SkeinStore + queue driver for development and tests.

Fastify adapter for skein-js — mount the Agent Protocol as a Fastify plugin.

Contains the logic for creating Generative UI bundles served via LangGraph API.

Express adapter for skein-js — mount the Agent Protocol on an Express Router.

AI Agent Observability — Track OpenAI, LangChain, LangGraph, Bedrock, Vercel AI, Anthropic

Assembles skein-js ProtocolDeps from langgraph.json + selected drivers (memory/Postgres/Redis).

The open-source LangGraph Platform alternative for TypeScript — self-host LangGraph.js agents. A drop-in replacement for the LangGraph CLI (dev/up/build/dockerfile).

An implementation of a multi-agent swarm using LangGraph

Utilities for validated tool calling and extraction with retries using LLMs - TypeScript port of trustcall

NestJS adapter for skein-js — serve the Agent Protocol from a Nest module.

PostHog analytics for skein-js — run lifecycle events plus $ai_generation LLM analytics.

Next.js adapter for skein-js — serve the Agent Protocol from App Router or Pages Router API routes.

The LangGraph.js binding for @skein-js/agent-protocol — wraps a compiled graph as an AgentGraph.

LangGraph checkpointer for Cloudflare D1 database

In-memory implementation of the LangGraph.js API.

OpenTelemetry spans and metrics for skein-js runs — works with any OTLP backend.

Drop-in replacement for @langchain/langgraph-checkpoint-postgres with Python parity fixes (branching, task_path, inline primitives)

LangSmith tracing for skein-js — run identity and thread grouping on every graph call.