Javascript agents

MCPLab - Test and evaluate MCP servers with LLMs — run evals, compare agents and launch the MCPLab web app

A lightweight Node.js wrapper for routing HTTP(S) traffic through Tor, including optional ControlPort circuit rotation.

Faceted Prompting — structured prompt composition for LLMs

XAgent Skill Agent Plugin installer for Claude Code, OpenClaw-style agents, Cursor, and generic skill runtimes.

General-purpose agent with transport abstraction, state management, and attachment support

Headless spreadsheet formula engine for Node.js services and agents with WorkPaper JSON persistence and formula readback.

CLI tool for CodeLoop — automated verification for AI coding agents

OpenCode TUI sidebar plugin that shows running background sub-agents.

better fetch for Node.js. Works on any JavaScript runtime!

Agent Identity: UserPool (用户池) login, TIP token (工作负载令牌), credential hosting (凭据托管 OAuth2/API key), optional tool/skill permission control (CheckPermission) and risk approval. Integrates with Volcengine 智能体身份和权限管理平台.

General-purpose agent with transport abstraction, state management, and attachment support

Self-hosted agent OS with persistent memory, multi-channel presence, tools, scheduling, and sub-agent orchestration

MCP server for controlling the browser via Page Agent extension

Generate LLM-friendly llms.txt files from markdown and MDX content files

Bento Guard SDK - AI-powered security infrastructure for autonomous agents

AWS SDK for JavaScript Bedrock Agent Runtime Client for Node.js, Browser and React Native

pi / senpi extension: structural code search (ast-grep), LSP intelligence (gopls/tsserver/marksman), bounded file/web primitives, and a local-LLM result summarizer (0GM).

MCP server that exposes openinsider.com to any MCP compatible client.

Runflow SDK - Multi-agent AI framework

Native AI agent loop for Capacitor — runs LLM completions, tool execution, and cron jobs in native Rust, enabling background execution.

Universal agent runtime for building AI-powered applications

Universal OpenAPI to LLM function calling schemas. Transform any Swagger/OpenAPI document into type-safe schemas for OpenAI, Claude, Qwen, and more.

LLM-first browser-automation runtime: planner + navigator agents driving Chrome over CDP

The self-improving Agentic QA harness with Memory

MarketIntelLabs fork of the Paperclip adapter for Hermes Agent — with adapter-owned status transitions, an in-process MCP tool server (paperclip-mcp) that replaces curl-in-prompt with structured tool calls, MIL heartbeat prompt templates, and OpenRouter m

Official Talonic MCP server. Lets AI agents extract structured, schema-validated data from any document via the Model Context Protocol.

A React component library that renders a live, animated view of multi-agent orchestration — showing each agent's thinking steps, streaming status, and time taken in a collapsible accordion UI.

OpenCode plugin that learns verbose shell commands and automatically prefixes them with snip.

## Table of Contents

Let agents run disposable VMs

Fast & effecient user agent string parser. Uses uap-core (Browserscope) data for parsing. Drop-in replacement for useragent

Agent protocol, execution skeleton, interceptor chain, message types, and ScopeContext for AgForge SDK

JavaScript obfuscator

Zero-config Node.js wrapper for M365 Copilot Agent Evaluations CLI (Python-based Azure AI Evaluation SDK)

Runtime bridge for executing agent-contracts workflows on Agent SDKs

CodeLoop MCP server - verification, self-repair, and recommendation layer for AI coding agents

Local-LLM-first agentic coding assistant

Local, headless pull-request system for agent-to-agent code review workflows

MCP browser server — loads and interacts with web pages using the user's Chromium-based browser with full JavaScript execution. Handles authentication, SSO, and anti-bot protection automatically via the user's existing browser session.

Native CLI binary for @anthropic-ai/claude-agent-sdk on darwin-arm64

Lightweight multi-agent orchestration system for OpenCode

Interactive CLI agent for Commerce Layer — bring your own LLM provider.

AI agent security scanner and npm audit for MCP servers, Claude Code, Cursor, and Windsurf. Find prompt injection, hallucinated packages, secrets, unsafe tools, and vulnerable code.

Proxy agent support for Koishi

Agent 协调编排器 - 智能调度、任务链编排、故障自愈

UI library build with web components

Website audit tool built for AI agents. 249+ SEO, performance & security rules from the CLI, your coding agent, the cloud, or MCP.

General-purpose agent with transport abstraction, state management, and attachment support

This package is for getting latest agents and randomize it

Eigenpal CLI — author and run document workflows from your terminal. Agent-ready.

The official Elastic APM agent for Node.js

SOA-Harness Runner — HTTP surface, trust bootstrap, Agent Card, StreamEvents, permission resolver, attestation, audit, probes. §19.4 errata: v1.0 includes all §X.Y Observability additions pinned in MANIFEST.supplementary_artifacts at release time; see soa

MCP Gateway for exposing VAT agents through Model Context Protocol

Universal clan runtime for the Jungle — set up an AI agent for any project, anywhere. Persistent brain by default + one-shot `wild` install for standalone Claude Code integration.

Playwright reporter that outputs structured JSON for LLM agents. Minimal console output, flat schema, easy to filter to failures.

iX MCP server for Angular

Traceloop Software Development Kit (SDK) for Node.js

Select context for coding agents directly from your website

AI code quality toolkit — deterministic linter for the AI coding era

TypeScript bindings for the LangChain agent streaming protocol

LangChain Agent UI component library for React

KeeperHub tools for LangChain — use onchain workflow automation inside any LangChain agent

A small LangChain agent factory library for reusable TypeScript agents.

LangChain adapter for [KeeperHub](https://keeperhub.com). Drop reliable on-chain execution into any LangChain agent in 3 lines.

LangChain tools for SwarmTrade — use agent-to-agent marketplace capabilities in any LangChain agent

Agent 365 Tooling SDK for LangChain AI agents built with TypeScript/Node.js

Client library for interacting with the LangGraph API

LangChain.js adapters for Model Context Protocol (MCP)

LangChain Agent Adapter for CopilotKit — connect LangChain/LangGraph agents to CopilotKit via the AG-UI protocol without a separate server

Reusable Socket.io + LangChain agent plumbing: protocol types, socket listener, local-tool registry, and stream adapter.

Create a new LangGraph project

LangGraph Multi-Agent Supervisor

Core LangChain.js abstractions and schemas

Third-party integrations for LangChain.js

OpenAI integrations for LangChain.js

Anthropic integrations for LangChain.js

PostBridge postal tools for LangChain JS and LangGraph — send physical letters to 5 countries from any LangChain agent.

Google Generative AI integration for LangChain.js

An implementation of a multi-agent swarm using LangGraph

OpenTelemetry instrumentation for LangchainJS

Shared LangChain agent utilities for Stream Chat

Various implementations of LangChain.js text splitters

LangChain AWS integration

Client library for connecting to the LangChain Hub.

MistralAI integration for LangChain.js

Langfuse integration for LangChain

Core types and classes for Google services.

Cohere integration for LangChain.js

Sample integration for LangChain.js

Google auth based authentication support for Google services

Core functions and utilities for Langfuse packages

React integration for LangGraph & LangChain

Google integrations for LangChain.js

Groq integration for LangChain.js

Langfuse OpenTelemetry export helpers

The **[AI SDK](https://ai-sdk.dev)** LangChain adapter provides seamless integration between [LangChain](https://langchain.com/) and the AI SDK, enabling you to use LangChain agents and graphs with AI SDK UI components.

Scaffold a DCP-AI governed LangChain agent project

Langfuse instrumentation methods based on OpenTelemetry

Library with base interfaces for LangGraph checkpoint savers.