Langchain agents

A zero-dependency, ultra-lightweight state machine for building agentic AI workflows without heavy frameworks.

Multi-agent LLM peer-review framework (an editorial board for manuscripts)

Gate every LangChain agent action through Qerexa runtime trust enforcement.

Official LangChain / LangGraph tool wrapper for Quesen — deterministic A2A risk validation.

LangChain integration for SafePrompt — prompt-injection detection as a callback handler. Validates every prompt flowing through a chain before it reaches the LLM.

OpenAI-compatible chat model for Semora: official openai SDK, LangChain chunks.

Shared SingleStore helpers for langchain-singlestore and langgraph-singlestore

A tick-based / real-time multi-agent swarm runtime with hierarchical memory, a hybrid LLM/rule-based orchestrator, and pluggable domain physics -- for simulations and for real hardware/services alike.

Multi-methodology swarm penetration testing agent built with LangGraph

LangChain integration for ToolTrace web intelligence API

LangChain tool integration for x402 web scraper with HTTP 402 micro-transactions on Base.

Provider-agnostic LangChain and LangGraph tools, finite nodes, and an analyst for @xbbg/xnews.

Autonomous API Schema & Reliability Inspector CLI. Probes OpenAPI specs, generates test suites, executes real-time HTTP calls, and exports Postman collections.

Official AI Agent and LLM Function Calling Tools for BaZi API (OpenAI, LangChain, Vercel AI SDK)

APort Repository Guard and pre-action authorization guardrails for GitHub, Claude Code, Cursor, OpenClaw, LangChain, CrewAI, DeerFlow, and n8n

Weaver — Coding agent dệt plan, code và test thành phần mềm chạy được. Xây dựng với LangGraph: Planner → Analyzer → Coder → Tester → Reviewer, tự sửa khi test fail.

The inter-agent communication protocol. Like HTTP for web services, but for AI agents.

The testing framework for AI agents — think pytest, but for agents.

Finds idle AWS resources, proves they are unused, and plans a dependency-ordered teardown behind a human approval gate.

Route a CTRLRun APPROVE through LangGraph's own interrupt().

LangGraph-based production agent backend with a human-approval gate for effectful tools (Ops Copilot demo)

LangChain tools for AnyAPI: hundreds of data and scraping APIs behind one key, billed per request in USD.

LangChain tools for the Asterwise astrology API: natal charts, Vedic matchmaking with Rajju and Vedha vetoes, panchanga, Western natal charts and numerology.

LangChain tools that pay for HTTP 402 APIs over x402 instead of carrying API keys. Works with any x402 v2 resource; Ausca is the default example.

An integration package connecting Hubris and LangChain

LangChain Tool + Retriever for PixelRAG (screenshot-native visual search) — unofficial community integration

SwarmD integration for LangChain

Emit a Testimony Record from a LangGraph human-in-the-loop flow, so the record can say who approved.

Anchor your LangChain.js agent's run tree as it executes: one callback handler turns every chain, LLM and tool step into a signed evidence envelope, sent to Sanning and witnessed on an interval to a permanent public record. Prompts and outputs are hashed

OpenAI provider tokens and model factory wiring for Nest LangChain.

Drop-in replacement for ChatGoogleGenerativeAI that automatically fixes schema compatibility issues with MCP tools and Gemini API

Olives Technologies Engineering OS — Autonomous Multi-Agent AI Engineering Environment

[Preview] Keycard grant middleware for LangChain agents: delegated access at the tool-call boundary, per-run identity, and LangGraph interrupts for sign-in and consent

AgentShip LangGraph engine — the default real-model runtime, with a LiteLLM model source that routes one `model:` string to any provider.

Identity, marketplace and messaging for AI agents in one API. Register with one call, no human needed. Hire other agents or sell your skills; pay and get paid wallet-to-wallet in USDC on Base (no custody, sealed deliveries).

LangChain integration for Anlyon: invoke hosted actions as tools and trace agent runs

Plug-and-play topological memory substrate for LLMs, LangChain, and autonomous agent swarms.

LangChain / LangGraph tool integration for Algenta: a governed-execution-aware toolset wrapping a self-hosted Algenta engine's MCP tool surface

LangChain tools for DNS Doctor: scan, diagnose and fix a domain's SPF, DMARC and DKIM, check global DNS propagation, audit SPF includes. Deterministic verdicts and copy-paste records from dnsdoctor.dev, never a guessed record.

Run LangChain deepagents on opsen — machine, model and tool spend on one bill.

Human-in-the-Loop integration between LangGraph and KirokuForms

Debug LangGraph-based agents visually - live execution graph, node inspection, and run replay, all from a single line.

FSM syntactic engine to repair truncated/broken JSON from LLMs (streaming, Pydantic, zero-regex core)

MaskFlow for LangChain: a reversible PII anonymizer/deanonymizer pair (drop-in for langchain-experimental's Presidio anonymizer) plus a leak-guard callback. Indian identifiers included.

Observability and drift detection for multi-agent systems (AutoGen, LangChain/LangGraph)

CLS observability SDK for LangChain/LangGraph — 6-layer span hierarchy, direct upload to Tencent Cloud CLS

Record every boundary an LLM agent crosses: withRewind, the recorder, the redactor, and the stores.

LangChain JS tools for SIGDA — wallet-signed cross-platform agent messaging on Robinhood Chain. Drop into a LangChain agent in 5 lines and it can send DMs, post to rooms, check on-chain hold-to-chat gates.

The pre-trade safety net your LangChain agent didn't know it needed. Live sell simulation across every DEX on Base (Uniswap V2/V3/V4, Aerodrome), catching traps a static scan will never see. x402-powered.

LangChain adapters for B4.run agents, chains, tools, streaming, embeddings, and retry.

Component discovery and agent setup for the Macaw Design System.

Google-OAuth-gated LLM gateway: verify a Google ID token, then run a Gemini (Vertex AI) completion for the verified caller.

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

Autonomous x402 web scraper tool for AI agents with automatic Base mainnet USDC micro-settlement

Google-OAuth-gated LLM gateway: verify a Google ID token, then run a Gemini (Vertex AI) completion for the verified caller.

DPX Protocol settlement tools for AI agents — LangChain and Vercel AI SDK adapters

A prompt-injection firewall for AI agents, with no AI inside: your agent reads anything and takes orders only from you. For Claude Code, Codex CLI, Kimi Code, DeepSeek Harness, Gemini CLI, MCP hosts and LangChain.

Deterministic runtime evidence and diagnostics for LangChain TypeScript agents.

React components and usage guidance for the Macaw Design System.

LangChain.js adapter for ArtemisKit - Test LangChain chains and agents

Mizuki tools for LangChain and any JavaScript agent: quote, assess, and track fixed-price GitHub maintenance paid in USDC on Solana.

Framework-independent CSS design tokens for Macaw.

LangChain tool wrappers for TON Agent Kit

LangGraph.js adapters and route contracts for B4.run agents, workflows, and graphs.

LangChain.js tools for the AnswerLine answer and search monitoring API.

Embeddable AI chat widget built with Preact, Tailwind CSS v4, LangChain, and TypeScript. Designed to be dropped into any existing web page with zero side effects.

LangChain.js integration for FoxNose — the knowledge layer for RAG and AI agents

Drop-in replacement for ChatGoogle that automatically fixes schema compatibility issues with MCP tools and Gemini API

LangChain chat model for Cursor models via the Cursor Agents SDK (local runtime)

LLM inference runtime for OwlMeans applications: a resilient four-method model over any LangChain chat model, a provider-plugin layer, a model factory service, and an execution abstraction that resolves models from an inheritable policy.

Agenticrun client and LangChain integration for managed agent configuration and tracing

Scopebond framework plugins — one import so an agent checks your policy before every tool call and records a signed receipt. Cooperative (M0) in-process guard with Vercel AI SDK and LangGraph/LangChain adapters.

LangChain.js tools for Sato Hub: search the scored onchain-agent index, run a Preflight check before installing or trading, get a swap-venue recommendation with the fee disclosed, and turn a goal into a build plan of real listings. Read-only and non-custo

OpenInference Instrumentation for LangChain.js Version 0.X

LangChain.js adapter for token-budget: BaseMessage[] conversion and a TokenBudgetMemory class — context window and token budget management for LangChain agents.

A RAG chat library built with LangChain

Convert LangChain tools to Rejelly ToolDefinition for @rejelly/core

LangChain.js integration for the turbopuffer vector database

Unofficial LangChain.js port of langchain-postgres (Postgres/pgvector integrations for LangChain).

LangChain integration for Bluebag

Google-OAuth-gated LLM gateway: verify a Google ID token, then run a Gemini (Vertex AI) completion for the verified caller.

Olives Technologies Engineering OS — Autonomous Multi-Agent AI Engineering Environment

Typed client and agent-framework tool adapters for the LinkedIn Toolkit local HTTP API.

SANDAL - Safe Agentic Natural-language Database Access Layer. Production-grade agentic database assistant CLI using LangGraph and LLMs (Google Gemini, OpenAI, Anthropic)

LangGraph tracing for Databricks MLflow (TypeScript)

Learned skill delivery for LangGraph agents through CopilotKit Intelligence

Self-hosted Agent Protocol server powered by Bun, Hono, LangGraph, PostgreSQL, and Redis

LangGraph-powered financial agent for the Afrinex SDK

An easy-to-use TypeScript wrapper around LangGraph for building AI agents.

Bind LangGraph Agent Inbox human responses to exact, one-time EMILIA authority. Accept uses the frozen interrupt, edit requires fresh authority for the edited action, and response or ignore never authorize tool execution.

LangChain / LangGraph structured tool wrappers for @pqc-sdk/core post-quantum cryptographic operations

DynamoDB checkpoints for LangGraph with versioned channel storage, compression, optional S3 offload, and explicit recovery errors.

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

LangGraph-style `graph` model tool for DeepSeek Harness — runs state graphs of subagent and pure-JS nodes with static and conditional edges, first-class cycles, and unbounded loops. Ships a web tool card visualizing live execution plus an interactive Grap

Describe compiled LangGraph.js graphs as canonical agent-topology documents

Channels and integrations for real-world LangGraph workflows — authenticated sources and durable destinations for WhatsApp, Slack, email, webhooks, and more.

Graph runtime capabilities for the DeepSeek Harness: register LangGraph compiled graphs as DSH tools, plus a graph-driven routing agent.

MCP server for Aegis Vault agent-keys — zero-code key management for Claude Desktop, Cursor, LangGraph

Corsair tools for LangChain.js / LangGraph — expose 200+ integrations to your agents with managed OAuth and credentials that stay in your own database.

Agent skill for debugging LangChain and LangGraph applications by fetching and analyzing LangSmith traces.