Langchain agents

n8n community node for SiliconFlow (硅基流动). Zero runtime dependencies. Provides a SiliconFlow action node (Chat / Vision / Embeddings / Image / Rerank / Audio TTS+ASR / Video) and a LangChain-compatible Chat Model node for AI Agents. Installs cleanly witho

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

A LangChain callback handler that emits Agent Arc Status Protocol events at chain/agent boundaries.

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

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

Idiomatic NestJS integration for LangGraph: nodes as providers, typed edge lists, checkpointers, streaming, interrupts, and OpenTelemetry tracing

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

Framework-agnostic prebuilt LangChain tools for agents (works with any LangChain/LangGraph app)

Postgres SkeinStore driver with pgvector semantic search, reusing PostgresSaver for checkpoints.

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).

React integration for LangGraph & LangChain

Decorator-first, type-safe authoring layer for LangChain JS tools and agents.

Monitor your AI agents in 3 lines of code — tokens, cost, latency, and silent failures

Fully local web research assistant (LangGraph.js port of langchain-ai/local-deep-researcher) - library, CLI and MCP server

Shared, framework-agnostic building blocks for skein-js HTTP adapters — in-memory dev runtime, LangGraph dev-state import, and langgraph.json CORS mapping.

Archil filesystem adapter for LangChain

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

Route LangGraph.js tool calls through toolgovern's governTool() gate before they reach ToolNode -- wraps each tool with the classifier, then re-wraps it with LangChain's own tool() factory so it slots into new ToolNode([...]) unchanged.

Prebuilt mda binary for darwin/arm64.

Prebuilt mda binary for linux/x64.

LangChain integration for mekik — surface agent tool calls in the UI, gate them behind human approval, and make them exactly-once across an interrupt/resume.

LangChain/LangGraph callback adapter feeding graph-trace.

Robyn framework adapters — gasless cross-chain tools for Vercel AI SDK, LangChain, Coinbase AgentKit, and raw OpenAI/Anthropic function-calling.

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

Prebuilt mda binary for win32/x64.

Prebuilt mda binary for darwin/x64.

Prebuilt mda binary for win32/arm64.

Prebuilt mda binary for linux/arm64.

Kakunin compliance tools for LangChain JS/TS — verify agent certificates and scopes inside tools and chains

Multi-provider AI Chat Model for n8n with sequential failover + retry. Any OpenAI-compatible provider (OpenAI, DeepSeek, NVIDIA, OpenRouter, Groq, ...), one credential per slot.

LangChain tools for Merka2a - the agent-native compute exchange. Search GPU compute, negotiate prices, and place orders.

JWT-gated LLM gateway: authenticate (bcrypt/JWT), then run a LangChain-on-Vertex Gemini completion. Unauthenticated calls are rejected.

LangChain.js document loader for Xberg — extract text, tables, and metadata from 107 document formats with optional OCR.

A CLI that uses a DeepAgents documentation agent to generate and maintain an OpenWiki for a codebase.

ElizaOS plugin for @arcproof/sdk -- native orchestrator + specialist builders (runtime.useModel, no LangChain needed) plus the Action/Plugin wrapper, for a bonded, independently-verified, real-payment agent.

Mastyf AI security middleware for LangChain — intercepts and evaluates tool calls through the Mastyf policy proxy

Run a prompt through a LangChain (system + human) chain over Gemini on Vertex AI; optional LangSmith tracing.

n8n community node for using Elasticsearch as a LangChain vector store (RAG, similarity search, AI agent tool)

Redis job queue and cross-instance pub/sub streaming for skein-js.

LangChain.js integration for the Taguru long-term semantic memory server

LangChain.js provider integration for SiliconFlow (chat + embeddings).

Installs the LangChain 1.x / LangGraph skill (API quick-reference + selection guide for Agents, RAG, tools, structured output, memory, middleware, LangSmith) into a project's .claude/skills folder.

LangChain integration for Talor SERP API - TypeScript version

NoInjection enforcement adapter for LangChain structured tools.

Drop-in OpenAI-shaped client for Cursor models (LangChain / LangGraph optional). Pass apiKey + model.

AI agent packaging for HTTP QUERY — OpenAPI tool schemas, MCP, Vercel AI SDK, LangChain helpers.

Official LangChain JS / LangGraph JS adapters for Wolbarg shared memory — BaseMemory + BaseStore.

Inkling is a CLI that uses a DeepAgents documentation agent to generate, maintain, export, and validate a living wiki for your codebase.

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

LangChain tools for FLAT Protocol — private agent-to-agent payments via BearerSwap

Tabstack tools for LangChain.js. Schema-enforced web extraction and research, backed by the official Tabstack SDK.

The AI Agent Firewall for LangChain. Enforce signed authority before consequential tool calls. Free account-owned API key required.

Multi-tenant payment gateway for API monetization with autonomous agent settlement on Base L2. Implements HTTP 402 protocol with USDC micropayments and programmatic fee routing.

LangChain/LangGraph integration for SCT (Secure Compact Tokenization) — reversible, keyed PII pseudonymization (DSGVO/BaFin-grade) plus deterministic tool-output compression and a metered OpenAI-compatible chat model.

Typescript bindings for langchain

LangChain tools for sweeping an agent's native gas balance to exactly zero across 25+ EVM chains.

Structured tracing model for graph agent runs.

Together AI integrations for LangChain.js

Auto-apply Grok 4.5 context compaction to xAI Responses API agent loops. Drop-in client that compacts every N turns or when a token budget is exceeded.

Telemetry collector for AI agents — Node.js / TypeScript port. Streams every run, LLM call, tool invocation, and chain step from LangChain.js / Mastra / Vercel AI SDK / Google GenAI (Gemini) — or a manual API — to the Dobby AI Control Plane for governance

IBM watsonx.ai integrations for LangChain.js

Client library for interacting with the LangGraph API

OpenBox LangChain adapter for TypeScript — governance + observability parity over @openbox-ai/openbox-sdk-ts for LangChain JS/TS agents

Fast TypeScript AI agent framework — per-request agents, 30+ model providers, 100+ integrations, 20+ vector DBs, 10+ databases, sessions, memory, knowledge, tracing, evals, HITL, teams, and workflows.

Drop-in AI-agent tools for x402 safety: verify whether an x402 endpoint is safe to pay before paying it (~70% are dead/scam), and discover working x402 services. Adapters for the Vercel AI SDK and LangChain, powered by PulseFeed.

Eden TypeScript runtime SDK — auto-instrumentation for OpenAI, Anthropic, Vercel AI, LangChain, Mastra, Bedrock, and Gemini with fire-and-forget telemetry to the Eden gateway.

Optional local LangGraph runtime for Agent Kit council workflows.

Advanced n8n AI Agent node for Claude, OpenAI & Gemini — native PDF/image vision, Claude Max (Claude Code OAuth) support, Anthropic prompt caching, structured output with auto-fix, fallback models, and on-demand document fetch.

Agent Team Orchestrator - Multi-agent collaboration system powered by LangGraph

Bug Analysis Platform — AI-powered bug analysis and multi-agent workflow engine. Includes a React frontend, Express backend, and LangGraph multi-agent server.

Market intelligence AI agents can verify - signed receipts, judged track record (misses included), Brier-calibrated forecasts. Zero-dep client + tools for OpenAI, Vercel AI SDK, LangChain, AutoGen. MCP: mcp.fahaliai.com

helmwart scan — design-time threat modeling for agentic-AI systems, in your CI. Reads a real agent config (MCP, n8n, LangGraph, CrewAI, and more) and reports its threat model against OWASP Agentic Top 10, MAESTRO, and MITRE ATLAS — including the lethal-tr

One dark dashboard to find and open every agent/AI dashboard running on your localhost. Zero dependencies, runs with npx.

An open, portable specification for describing AI agent workflows using a human-readable text language.

Universal skills loader for AI agent frameworks with progressive disclosure

CLI tool for AgentsRepos — the GitHub for AI Agents

Auto-detecting CLI installer & circuit breaker configuration generator for AI Agents

Get a third-party sandbox verdict on any artifact in one command, with no account: npx @kenwea/mcp check <url>. Also the stdio<->HTTP MCP bridge to mcp.kenwea.com.

MCP server that lets Claude, Cursor, LangChain and CrewAI call 35 live x402 pay-per-call tools on Base (USDC) with no API key. Agents auto-pay per call via the x402 v2 protocol using their own funded wallet: cited SEC EDGAR company data, RDAP domain-trust

Compress a completed agent's trace into a compact, framework-agnostic briefing that the next agent can load in one call. Solves the cross-framework agent-to-agent handoff problem. Paid via x402 ($0.10/pack) on Base USDC.

Trust-gated buyer client for the x402 machine economy — spend policy, Aegis trust gate, receipts ledger, MCP server, LangChain.js tools.

Official JS/TS SDK for MCPGRAM — one client for native connectors and external MCP servers.

MCP server for Beacon — the search engine for AI agents. Find open-source AI agents by capability, ranked by real GitHub traction, right inside Claude/Cursor/Cline.

The official command-line interface for Creduent: the open standard and security protocol for cryptographic AI agent identity, authentication, and trust verification using Ed25519 and DNS.

Stops LLM agents from silently guessing what they don't know

Static, evidence-backed health checks for AI agent projects

CDS Plugin for LangGraph checkpoint persistence in SAP CAP applications

Evidence-preserving LangGraph Store adapter for Engram.

LangGraph adapter for Context Router - brings structured state to LangGraph workflows

A generic Pi extension that implements LangGraph-like workflows with transitions, joins, dynamic fan-out, and configurable node runners.

LedgeLM evaluation helpers for LangGraph graphs and nodes

Deterministic testing helpers for @harpua/langgraph graphs: scripted chat models, stream collectors, interrupt assertions, and a Nest testing-module harness

Scaffold a runnable NestJS + LangGraph weather agent built on @harpua/langgraph — `pnpm create harpua-app my-agent`

OpenClaw plugin that lets any agent drive LangGraph workflows from inside a conversation thread with proactive event wake-back.

CLI to inspect LangGraph agent trajectories locally - zero infra, localhost only

Codex-style LangGraph agent runtime for internal non-coding workflows.

TUI Agent 脚手架：LangChain + LangGraph + DeepAgents + ACP 协议

Machine-first CLI used by a Node LangGraph agent to execute semantic Wave operations against the Rails API.

FDE agent substrate — A2A contract, ports, LangGraph agent runtime shell

AG-UI lifecycle and concurrency checker for LangGraph agents