Langchain agents

Real-time cost tracking, budget enforcement, and usage analytics for LLM applications

A tiny Python library for tracking LLM token usage, latency, and estimated cost - with per-agent-step cost attribution for LangGraph, a local dashboard, and litellm-backed pricing for hundreds of models.

LLM development debug layer - every API call recorded, nothing lost. Reasoning tokens, prompt diff, session timeline, LangChain/LlamaIndex integration.

Carbon-aware scheduling and telemetry for LLM applications

[IMPORTANT: This library is now part of LangChain, follow its official documentation] A caching layer for LLMs that exploits Elasticsearch, fully compatible with LangChain caching, both for chat and embeddings models.

A Lakehouse LLM Explorer. Wrapper for spark, databricks and langchain processes

Extract structured, validated JSON from any LLM — OpenAI, Anthropic, Gemini — with batch extraction, caching, per-field confidence scoring, schema evolution, multi-schema extraction, output transforms, partial extraction, extraction diff, pipeline extraction, and smart auto-retry.

Pytest plugin for running non-deterministic LLM tests with automatic retry and beautiful reports

LLM testing framework for validating agent behavior and tool usage

v0.66.0: sycophancy_score() direction corrected — AUROC 0.9296 [0.8754, 0.9703] on Perez 2022 (was 0.0704, wrong direction). AgentShield judge_risk field fix.

LLM Hippocampus — a Context Engineering playground

Pluggable LLM inference routing SDK — bring any model from any provider

Free-tier LLM API key pool with rotation, cooldown, and LangChain drop-in

Cost ceiling, audit log, and kill switch for LLM agents.

Give your AI agents persistent, searchable long-term memory with pluggable storage backends

Validate LLM outputs against schemas with automatic retry and JSON extraction.

A lightweight LLM-based privacy filter for masking sensitive entities in text.

Trace and explain LangChain agent reasoning step-by-step

A minimum Python package built on top of the LangChain framework to interact with LLM.

Fault-tolerant LLM provider rotation with circuit breaker, quotas, and model-first routing

Cognitive Security Middleware - The 'Electronic Stability Program' (ESP) for Large Language Models. Bidirectional containment system with defense-in-depth architecture (6 validation layers), stateful tracking, and mathematical safety constraints. Validated against Unicode/encoding attacks, pattern evasion, multilingual/polyglot attacks (12+ languages including Basque, Maltese), and memory/session attacks. Protocol-based hexagonal architecture with LangChain integration.

Intelligent tool routing for LLMs with 95.8% reduction in context size

Smart memory management for LLM conversations - topic-aware compression that just works

Biblioteca Python que simplifica e unifica a definição e chamada de ferramentas para grandes modelos de linguagem (LLMs). Compatível com Ollama, LangChain, OpenAI e outros frameworks.

Tool calling runtime for text-only LLMs with LangChain support

OpenTelemetry instrumentation for LangChain.

OpenTelemetry instrumentation for LangGraph.

Run llm functions with just inline documentation and no code

A framework-agnostic browser tool for AI agents. Works with Anthropic, OpenAI, LangChain, and any agent framework.

A library to extract structured information from unstructured text using LLMs, powered by LangChain.

In-process LLM client faker that patches OpenAI, Anthropic, LiteLLM, and LangChain for fast, deterministic testing without network calls

Open-source LLM prompt injection defense — protect any AI app in 2 lines of Python

Loads a Langchain LLM by model name as a string.

Observability and monitoring for AI apps

The Python library that lets you spin up any LLM with a single function. Route between local and remote LLMs with a unified interface.

Prompt Perfection at Your Fingertips

Python SDK, CLI, and Arena for 10 LLM providers. Compare models, synthesize a privacy-aware Best Answer, use MCP tools, fallback, caching, and direct BYOK access.

Lightweight LLM observability. SQLite-based tracing with zero infrastructure.

A Python library for language detection and translation using langchain ChatModels

LoongSuite LangChain Instrumentation

LoongSuite LangGraph Instrumentation

The AI Agent Codex — 15 production patterns, scaffolds for LangGraph/CrewAI/OpenAI Agents SDK, and a searchable knowledge base

Resilient AI agents via Active Inference

Nomotic governance for AI agents. Works with Claude, LangChain, CrewAI, AutoGen, OpenAI, or any custom framework.

A LangGraph/LLM‐driven EDA → AutoML → report pipeline

MatrixLLM: OpenAI-compatible multi-provider LLM router (OpenRouter-style) with optional relay nodes

Synap memory integration for LangChain and LangGraph

Synap memory integration for LangGraph — BaseStore + BaseCheckpointSaver

A Task-Level Distributed Agent Workflow Framework for building scalable, resource-efficient multi-agent systems

LangGraph integration for MCAL - Goal-aware memory for AI agents

Ferramenta de consulta de bases de dados usando linguagem natural com agente inteligente

MCP-Bastion security middleware integration for LangChain - prompt injection, PII, and rate-limit protection for LLM agents

LangChain MCP tools testing helpers for MCP Test Harness

AI agent for image generation with multi-provider LLM support and interactive CLI

Langchain plugin for media-tagging library

LangChain integration for Membrain — persistent semantic memory for AI agents

LangChain memory integration for MemoryLayer.ai - persistent memory for AI agents

MenteDB integration for LangChain and LangGraph

Official Python SDK for the Mercatai AI agent marketplace

Merlin dedup integration for LangChain - strip byte-redundant context before it reaches the LLM.

A Python package for Mezo Agent tools with LangChain tools

FastAPI and LangGraph service for Mia personal AI agent

LangChain observability and tracing extensions for Microsoft Agent 365

Memory-centric agent harness on deepagents / LangGraph

LangChain integration for mimory-mcp-focus

乾坤镜 LangChain 自动探针 —— pip install 即插即用，零代码侵入

A low-cost, cross-language LangChain implementation in Rust

Simple LangChain Wrapper Package for ease of using ChatGPT

A FastAPI application with Langchain, Weaviate, and MinIO integrations

The official Mixedbread AI integration for LangChain.

A reusable library for managing LLM providers, authentication, and model selection.

A comprehensive, framework-agnostic library for evaluating Retrieval-Augmented Generation (RAG) pipelines.

MOSS cryptographic signing integration for LangChain

MOSS cryptographic signing integration for LangGraph

Sample LangGraph currency ggent with A2A Protocol

Make Anthropic Model Context Protocol (MCP) tools compatible with LangChain and LangGraph agents.

Add your description here

LangGraph solution template for MCP

LangChain integration for muapi.ai — generative media tools, document loader, and Deep Agents recipe

LangChain chat-history adapter backed by MuBit memory engine

LangGraph BaseStore adapter backed by MuBit memory engine

Multi-Agent System Framework for AI Agents built on LangGraph

Achieve consensus across multiple LLMs through an AI judge coordinator

A hybrid LangChain RAG assistant supporting OpenAI, GROQ, and HuggingFace providers

A microservice using FastAPI, PostgreSQL, OpenSearch, and LangChain.

Open Source Multi-Agent System Evaluation Framework

Observability middleware for multi-agent LangGraph/LangChain workflows. Track agent trees, emit events, and trace execution across nested agents.

LangGraph client for murmur

A collection of utilities for Nancal LangGraph projects

Powerful LLM framework — 3 lines of code to do what LangChain takes 30. Chat, Tools, RAG, Agents, Streaming.

LangChain BaseTool for estimating and deploying NEAR smart contracts

LangChain tools for NEAR blockchain event subscriptions with filtering and reliable reconnection

LangChain tools to build, validate, and simulate NEAR transactions

NearAI LangChain Integration

A comprehensive memory system for AI agents using Neo4j

Trust-gate your LangChain agents with Nerq. Preflight trust checks, agent discovery, and trust scoring for 204K+ AI agents.

Trust-check node for LangGraph agents. Verify AI agent safety before execution.

Drop-in LangChain integration for Neruva agent memory substrate. v0.2.0 adds AUTO-PILOT: NeruvaAutoPilot (classify intent + reflect + extract via your LangChain LLM) and NeruvaAutoPilotCallback (BaseCallbackHandler). Plus NeruvaChatMessageHistory + NeruvaContextRetriever for memory + KG recall, NeruvaCodeGraph (5 code nav methods), NeruvaCognitive (13 cognitive primitives). Pattern-C: substrate stays $0/call.