LLM Step-by-Step Trace Debuggers

RagaAI-Catalyst is a suite of software implementation tools providing an SDK, dashboard, and platform for monitoring, debugging, red-teaming, and evaluating agentic AI workflows. It serves as an observability framework for tracing the execution paths of large language models and multi-agent systems. The project distinguishes itself through a security suite for automated red-teaming and vulnerability scanning to detect biases, alongside a centralized prompt registry that decouples templates from application code. It further provides an evaluation platform that combines synthetic data generation with custom metric frameworks to quantify model accuracy and reliability. The system covers broad operational domains including agent behavioral observability, prompt lifecycle management, and the application of output guardrails to block undesirable content. Its monitoring capabilities include trace-based execution graphing, timeline-based event sequencing, and diagnostic tools for analyzing multi-agent interaction flows. The core functionality is delivered via a Python library for recording tool calls and decision-making processes.

Opik is an observability and evaluation platform designed for generative AI applications and agentic workflows. It provides a centralized environment for tracing execution flows, managing prompt templates, and monitoring production performance, allowing teams to gain visibility into complex model interactions and tool usage without requiring manual application code changes. The platform distinguishes itself through its integrated approach to the AI development lifecycle, combining distributed trace instrumentation with automated evaluation frameworks. It supports model-as-a-judge scoring, synthetic data generation, and the conversion of production traces into structured test cases, enabling developers to iteratively refine prompts and agent behavior. By offering a collaborative debugger and chat-based workspace management, it facilitates direct interaction with execution data to identify errors and implement code remediations. Beyond core observability, the system includes tools for dataset versioning, custom metric definition, and cost analysis to track resource allocation across teams. It also features a model gateway to standardize logging and security across diverse model providers. The platform is built for flexible deployment, supporting containerized execution and orchestration via Kubernetes to ensure consistency across local and cloud environments.

Deepagents is an LLM agent orchestration platform and stateful application server designed for deploying and managing AI agents built with computational graphs. It provides a containerized runtime environment that handles agent execution, state persistence, and the versioning of AI assistants. The platform distinguishes itself through deep integration with the Model Context Protocol, allowing agents to function as servers that expose tools and capabilities to external clients. It features a sophisticated observability suite for capturing execution traces, performing LLM-based evaluations against datasets, and conducting side-by-side model output comparisons. The system covers a broad range of operational capabilities, including cron-based task scheduling, multi-tenant workspace isolation, and human-in-the-loop review workflows. It also manages long-term memory through semantic search and provides automated scaling of compute resources across cloud environments. A command-line interface is provided for local agent validation, graph packaging, and rapid testing via a local development server.

Agenta is a Prompt Ops lifecycle manager and prompt management platform that decouples prompt engineering from application code. It serves as a centralized system for developing, versioning, and deploying prompt templates and model configurations across different environments. The platform functions as an AI agent orchestrator with a visual interface for building agent workflows and connecting models to external tools. It further acts as an evaluation framework and observability tool, utilizing OpenTelemetry to capture execution traces, monitor latency, and track token costs. The system covers a broad range of capabilities including judge-based evaluation for scoring model outputs, registry-based prompt management for version control, and environment-based deployment to promote configurations through development and production stages. It also provides tools for converting production traces into test datasets and managing role-based access control for multi-tenant organizations. The platform can be installed using Docker Compose with reverse proxy options for traffic management.

SkyWalking is a comprehensive observability stack and application performance monitoring platform. It functions as a distributed tracing system and an AI application monitor, providing a centralized suite for collecting and analyzing logs, metrics, and traces to maintain the health of containerized architectures. The platform distinguishes itself through a service topology visualizer that renders interactive maps of infrastructure dependencies and communication patterns. It also includes specialized capabilities for generative AI workflow observation to track the execution flow and performance of AI components within a software stack. The system covers a broad range of monitoring capabilities, including automated performance alerting driven by machine learning for anomaly detection. Its telemetry surface encompasses distributed request tracing, log pipeline management, and the aggregation of performance metrics for microservices and system resource profiling.

This project is a framework for managing generative AI services through a unified provider interface and adapter layer. It provides a standardized API for calling multiple cloud-based and locally hosted models, translating provider-specific parameters and responses into a uniform format. The system includes an agent orchestrator designed for long-running tasks, featuring state persistence for resuming runs and execution tracing to monitor decision-making processes. It integrates the Model Context Protocol to connect models to external servers and filesystems and employs a policy-based execution system with approval lists to control tool calling. Additional capabilities cover automated tool execution through schema generation, local desktop automation, and speech-to-text transcription. The project also provides a conversational coding interface for file editing and shell command execution, as well as specialized subagents for read-only code review.

HyperDX is an OpenTelemetry observability platform that provides centralized log management, distributed tracing, and a self-hosted monitoring stack. It functions as a unified system for collecting, indexing, and visualizing logs, metrics, and traces from cloud and container environments. The platform distinguishes itself with specialized tooling for large language model monitoring and session replay, allowing user interactions in the browser to be linked to backend telemetry. It employs schema-less JSON parsing to index structured logs dynamically and uses source maps to resolve minified stack traces back to original code. Its broader capabilities include full-stack instrumentation for various languages and serverless environments, automated event pattern clustering, and end-to-end request tracking. The system also features SQL-based telemetry querying, multi-channel alerting, and unified visualization dashboards. The software can be deployed as a self-hosted instance using Docker.

OpenObserve is a unified observability data platform designed to ingest, store, and analyze logs, metrics, and traces. It functions as a cloud-native monitoring tool that centralizes telemetry from diverse sources, including standard collectors and cloud service providers, into a single, scalable system. By utilizing a columnar storage engine backed by object storage, the platform enables efficient long-term data retention and high-performance analytical querying. The platform distinguishes itself through deep integration with artificial intelligence, allowing users to query data using natural language, generate dashboards via prompts, and automate incident analysis. It provides specialized monitoring for language model pipelines, including token usage cost analysis and performance tracking for AI agents. Furthermore, the system enforces strict multi-tenant resource isolation and zero-trust access, ensuring that organizational data remains secure and independent within shared infrastructure. Beyond its core storage and AI capabilities, the platform includes a comprehensive suite of tools for incident management, infrastructure monitoring, and data pipeline orchestration. It supports real-time stream processing, schema-agnostic indexing, and automated data enrichment, allowing for flexible telemetry management without rigid pre-defined structures. The system also provides advanced diagnostic features such as production error deobfuscation, service dependency mapping, and user journey analysis to accelerate root cause investigation. The software is designed for flexible deployment, running as a stateless, containerized service that supports high availability and horizontal scaling. It is distributed as a single binary or container image, with configuration managed through infrastructure-as-code templates.

Deepeval is a framework for testing and evaluating large language model applications. It provides a suite of tools for executing automated regression tests, validating model output quality against defined standards, and tracing the execution of complex agent workflows. By integrating these capabilities into development pipelines, the platform ensures consistent performance and reliability throughout the software lifecycle. The platform distinguishes itself through its focus on programmatic validation and observability. It utilizes secondary language models to score output quality and employs assertion-driven checks to verify performance thresholds. Beyond standard evaluation, it includes specialized utilities for generating synthetic test data to simulate edge cases and performing security red teaming to identify potential vulnerabilities before deployment. The system covers a broad range of operational needs, including the management of structured evaluation datasets and the instrumentation of multi-step agent interactions for debugging. It supports automated quality gates that can block deployments based on performance metrics, facilitating continuous integration and deployment workflows for intelligent systems.

mcp-agent is a framework for building AI agents that integrate with Model Context Protocol servers to execute tools and access data. It functions as a multi-agent orchestrator and protocol-compliant server, enabling the creation of agents that can discover and invoke tools from connected external servers. The project distinguishes itself through a durable workflow engine that supports long-running tasks capable of pausing, resuming, and surviving restarts. It implements complex orchestration patterns, including iterative evaluator-optimizer loops, hierarchical workflow nesting, and specialist request routing to handle multi-step objectives and deep research investigations. The framework provides comprehensive capabilities for agent management, provider-agnostic model interfaces, and agentic observability using the OTLP standard for distributed tracing and token usage tracking. It also includes systems for secure credential handling via OAuth, cloud deployment for protocol servers, and automated behavior verification for tool execution. The project includes a command-line interface for project bootstrapping, scaffolding templates, and managing the lifecycle of deployed agent applications.

Uptrace is an OpenTelemetry-based observability platform designed to collect, store, and analyze distributed traces, metrics, and logs. It functions as a centralized logging backend, a distributed tracing system, and a metrics engine to monitor application performance and system health. The platform is distinguished by AI-powered operational capabilities, allowing users to query telemetry data and manage monitoring dashboards using natural language. It specifically includes specialized monitoring for generative AI pipelines, tracking token usage and response quality for LLM interactions and retrieval-augmented generation workflows. The system covers a broad surface of observability capabilities, including real-time service topology visualization, automated alerting based on metric thresholds, and full-stack trace correlation. It provides instrumentation for various languages and environments, including eBPF auto-instrumentation for zero-code collection and native support for Kubernetes and serverless deployments. The platform can be deployed via Docker Compose, Helm charts, or Ansible, and supports observability-as-code using Terraform or YAML configurations.

Parlant is an agentic workflow engine and orchestration framework designed for building conversational AI that adheres to strict behavioral guidelines. It provides a platform for managing multi-turn interactions through state-machine-based logic, allowing developers to define complex, hierarchical conversational flows that can adapt, skip, or revisit steps based on real-time user input. The framework distinguishes itself through its focus on behavioral governance and observability. It enables developers to define precise domain terminology and enforce instruction compliance through prioritized guidelines, ensuring that agents remain consistent and brand-aligned. To maintain transparency, the system includes built-in reasoning audits and decision tracing, which log internal decision paths and guideline matches to help developers troubleshoot agent behavior and refine instructions. Beyond core orchestration, the platform supports a wide range of operational capabilities, including tool execution middleware, dynamic data injection, and event-driven hooks for external integrations. It manages the full interaction lifecycle, from intent disambiguation and session context maintenance to frontend metadata attachment and response streaming. These features allow for the creation of context-aware interfaces that remain grounded in current information while providing a responsive user experience.

Jaeger is a distributed tracing platform used for collecting, storing, and visualizing request flows across microservices. It identifies performance bottlenecks and errors by tracking requests as they move through multiple service boundaries. The system includes telemetry collectors, a multi-tenant backend, and a trace visualizer. The platform provides a multi-tenant tracing infrastructure that isolates data and queries by tenant to support shared environments. It supports standardized telemetry ingestion via the OpenTelemetry Protocol over gRPC and HTTP. To manage storage costs and overhead, it employs adaptive trace sampling to dynamically adjust the volume of captured request data based on traffic patterns. The system handles distributed trace storage through pluggable database backends and manages the data lifecycle via automated index rollover and cleanup. Its analysis capabilities include tag-based searches, transaction timeline visualization, service dependency graphs, and side-by-side trace execution comparison. Security is addressed through TLS communication encryption and trace data anonymization. The project supports custom distribution building and cross-platform binary compilation to create tailored executables based on selected extensions and processors.

LangChain.js is a framework for building, executing, and monitoring stateful agentic applications. It provides an orchestration engine that models workflows as directed graphs, allowing developers to connect language models, data sources, and external tools into modular, multi-step processes. The platform distinguishes itself through its focus on stateful execution and human-in-the-loop control. It manages agent lifecycles by persisting execution state across threads, enabling fault tolerance and the ability to pause workflows at designated breakpoints for manual review or modification. This architecture supports both autonomous agent orchestration and complex multi-agent systems, with built-in capabilities for streaming real-time execution updates and managing long-term memory. Beyond core orchestration, the project offers a comprehensive suite of tools for the entire application lifecycle. This includes integrated observability for tracing and evaluating agent performance, schema-enforced data serialization for reliable communication, and extensive support for deployment, security, and infrastructure management. The project provides a TypeScript-based software development kit and a command-line interface to facilitate local development, testing, and deployment of agentic workflows.

LangChain is an orchestration framework designed for building, managing, and deploying applications powered by large language models. It provides a unified integration layer that normalizes disparate model provider APIs into a consistent set of primitives, enabling developers to build complex, multi-step AI workflows that manage state, memory, and tool execution. The project distinguishes itself through a durable execution runtime that maintains persistent state across long-running processes by checkpointing progress to external storage. It models agent workflows as directed graphs, allowing for explicit node-to-node routing and state management. Furthermore, it includes a human-in-the-loop control layer that enables developers to pause execution at defined breakpoints, allowing for manual inspection, modification, and approval of agent actions during runtime. Beyond its core orchestration capabilities, the framework supports a tiered memory architecture that separates short-term conversation context from long-term persistent data. It also provides comprehensive observability tools for tracing and monitoring execution flows, alongside security features for managing authentication and fine-grained access control. The platform is supported by extensive documentation and standardized interfaces for models, embeddings, and data sources to facilitate the development of production-grade agentic systems.

Plano is an AI agent orchestrator and LLM gateway proxy that unifies access to multiple AI providers through a single interoperable interface. It functions as a model routing engine that decouples applications from specific vendors using semantic aliases, allowing traffic to be shifted between providers without modifying application code. The system distinguishes itself with intent-based agent routing, which directs prompts to specialized agents based on semantic analysis. It features an interceptor-based filter chain system that acts as guardrail middleware to enforce safety policies, rewrite prompts, and validate inputs before they reach a model. The project covers a broad operational surface, including automated OpenTelemetry-driven observability for tracing agentic signals, conversational state management for session affinity, and reliability tools such as automatic model fallbacks and endpoint load balancing. It also provides capabilities for converting natural language into structured backend function calls. The server can be deployed as a containerized image in Docker or Kubernetes.

Mastra is an orchestration framework designed for building, deploying, and managing autonomous AI agents and multi-agent systems. It provides a comprehensive suite of primitives for creating resilient AI applications, including durable workflow orchestration, event-driven agent loops, and semantic memory management. By integrating these core components, the platform enables developers to build complex, multi-step processes that can reason about goals and execute tasks without manual intervention. The framework distinguishes itself through its focus on observability and secure, isolated execution. It features a built-in telemetry pipeline that captures structured execution traces, logs, and performance metrics, allowing for real-time debugging and evaluation of agent behavior. Furthermore, it utilizes sandboxed environments to isolate code execution and filesystem operations, ensuring that agent interactions remain secure and reproducible. Mastra covers a broad capability surface, including multi-agent delegation hierarchies, schema-validated tool execution, and real-time voice interaction. It supports advanced orchestration patterns such as human-in-the-loop approvals, persistent state management for long-running workflows, and retrieval-augmented generation using vector-based semantic memory. These features are designed to work together to support the entire lifecycle of AI-powered applications, from initial development and testing to production deployment. The project is built for TypeScript environments and provides a modular architecture that integrates with existing web stacks and infrastructure. It includes a client SDK for interacting with remote agents and supports various authentication providers to secure API endpoints and agent resources.

This project is an OpenTelemetry reference implementation and distributed microservices environment used to demonstrate the collection and export of traces, metrics, and logs. It serves as a telemetry pipeline showcase and a polyglot instrumentation example, providing a sandbox for practicing distributed tracing and monitoring within a Kubernetes cluster. The system features a polyglot architecture to demonstrate consistent, vendor-neutral telemetry implementation across multiple programming languages. It includes a simulated environment for testing telemetry interoperability and troubleshooting scenarios, allowing users to verify how observability data is interpreted across service boundaries. The project covers a broad range of observability capabilities, including automatic and manual instrumentation for serverless functions and client-side applications. It implements unified telemetry capture for logs, metrics, and traces, utilizing collector-based routing, data sampling, and context propagation to link disparate spans into single distributed traces. Deployment is managed via Helm charts and Kubernetes manifests, with support for minimal environment configurations to reduce memory requirements.