# REAA Standard Library > 313 MIT-licensed TypeScript packages for production AI agents. > Covers testing & security, evals & quality, observability & cost, orchestration & protocols, mcp infrastructure, reliability & ops, domain pipelines. > Authored and maintained by REAA Technologies. ## Distribution - [Full catalog (machine-readable)](https://reaatech.com/llms-full.txt): every package with description, npm link, repo link - [MCP server](https://mcp.reaatech.com/sl): live catalog with `search_packages`, `get_package`, `list_categories`, `list_by_category`, and `report_issue` tools - [Setup page](https://reaatech.com/install): one-line config snippets for Claude Code, Cursor, Codex, Windsurf, Cline, Gemini, or any chat surface - [Browseable HTML catalog](https://reaatech.com/products/packages) - [NPM org](https://www.npmjs.com/~reaatech) - [GitHub org](https://github.com/reaatech) ## Categories - [Testing & Security](https://reaatech.com/products/testing-security): 46 packages — Chaos testing, prompt injection benches, tool-use firewalls. - [Evals & Quality](https://reaatech.com/products/evals-quality): 55 packages — Agent and RAG eval harnesses, LLM-as-judge, prompt versioning. - [Observability & Cost](https://reaatech.com/products/observability-cost): 37 packages — OTel GenAI semconv, cost telemetry, semantic caching, model routing. - [Orchestration & Protocols](https://reaatech.com/products/orchestration-protocols): 42 packages — Agent mesh, confidence routing, handoff protocols, A2A. - [MCP Infrastructure](https://reaatech.com/products/mcp-infrastructure): 35 packages — Gateway, catalog, doctor, schema evolution, server starter, multi-tenancy. - [Reliability & Ops](https://reaatech.com/products/reliability-ops): 37 packages — Circuit breakers, idempotency, output repair, secret rotation, session continuity. - [Domain Pipelines](https://reaatech.com/products/domain-pipelines): 61 packages — Hybrid RAG, voice agent kit, media pipelines, agent memory.