Global

One workspace: what ran, what broke, what is already pinned as a test.

npm test maps the core tests' claude-code/testing import to Node's test runner and Jest's expect; it does not emulate engine events. Files run sequentially so the existing performance assertions do not compete with other test processes. CI runs this independent core suite.

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

Open-source, high-performance AI gateway that works as your LLM gateway, MCP gateway and agent gateway. One OpenAI-compatible API for 10,000+ models, with failover, load balancing, semantic caching, virtual keys, budgets and MCP Code Mode.

The OpenAI Agents SDK is a lightweight yet powerful framework for building multi-agent workflows. It is provider-agnostic, supporting the OpenAI Responses and Chat Completions APIs, as well as 100+ other LLMs.

Arize Phoenix is Arize's open-source AI observability platform designed for experimentation, evaluation, and troubleshooting. For managed production workflows, Arize also offers Arize AX. Phoenix provides:

AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

Not another SDK. Build autonomous agents with Flue's programmable TypeScript harness.

A Rust and Bevy skating project built from Skate 3 reverse-engineering research. skate map support. Gameplay parity is still a work in progress.

SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monitoring, etc.

Encore is the infrastructure platform for the intelligence era, where engineers and AI agents build production systems without waiting on infrastructure. Run and validate with real infrastructure locally and in preview environments, then deploy to your own AWS or GCP account.

💥💥💥 Jaeger v2 is out! Read the blog post and try it out.

Every notebook can be opened and run on Google Colab directly from the links below. Just click the Open In Colab badge next to the notebook you want to run.

An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.

> 1. 根目录下 cat-client 模块以后不再维护，下个大版本更新计划移除。新版Java客户端参考：lib/java > 2. 管理端、服务端、告警服务均使用 cat-home 模块部署即可

Build reliable customer-facing AI agents with Parlant: an interaction control harness optimized for controlled, consistent, and predictable LLM interactions.

Memray is a memory profiler for Python. It can track memory allocations in Python code, in native extension modules, and in the Python interpreter itself. It can generate several different types of reports to help you analyze the captured memory usage data.

A cloud-native Go microservices framework with cli tool for productivity.

Jina-serve is a framework for building and deploying AI services that communicate via gRPC, HTTP and WebSockets. Scale your services from local development to production while focusing on your core logic.

Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in service architectures. Features include both the collection and lookup of this data.

PySnooper is a poor man's debugger. If you've used Bash, it's like set -x for Python, except it's fancier.

APM, (Application Performance Management) tool for large-scale distributed systems.

A powerful framework for faster, easier, and more efficient project development.

A miscellaneous collection of in-development and unsupported performance analysis tools for Linux ftrace and perfevents (aka the "perf" command). Both ftrace and perf are core Linux tracing tools, included in the kernel source.

bpftrace is a general purpose tracing tool and language for Linux. It leverages eBPF to provide powerful, efficient tracing capabilities with minimal overhead.

This book, The Accidental CTO, is my behind-the-scenes account of that journey. It’s not a dry academic manual filled with abstract diagrams.

Grafana Agent Observability monitors the agents you build and the coding agents you use. This repo provides the open-source SDKs and plugins that send telemetry to it.