--- title: "LangChain & LangGraph · In Production Since 2022 · hsnlabs" description: "Independent agentic engineering with LangChain & LangGraph since 2022. Architecting deterministic state machines and LangSmith observability for mission-critical systems." url: "https://hsnlabs.ai/en/langchain/" locale: "en" updatedAt: "2026-11-03T21:11:40Z" --- # LangChain & LangGraph · In Production Since 2022 · hsnlabs > Independent agentic engineering with LangChain & LangGraph since 2022. Architecting deterministic state machines and LangSmith observability for mission-critical systems. # LangChain & LangGraph From language model to real intelligence. Building mission-critical agent applications in production since 2022. Connecting frontier models to your enterprise data and tools with deterministic execution control. ## The benefits of LangChain Why engineering leaders standardize agent architectures on LangChain and LangGraph. ### Open, modular and ready for your landscape Structured environment supporting multiple LLM providers and data sources, integrating directly with your existing IT architecture. ### Reduced complexity and deterministic control Orchestrating models, logic, and external tools. Faster development, fewer runtime errors, and complete operational control. ### Connected context beyond basic models Dynamic retrieval from CRMs, vector search, SQL databases, and cloud files, keeping agents grounded in live business data. ## Ecosystem framework The three essential layers for taking agents from experimentation to continuous production. ### LangGraph State Core Modular state machines with persistent memory, cyclic flow control, and human-in-the-loop review gates. ### LangSmith Observability End-to-end trace observability, latency and token cost tracking, and continuous regression evaluation suites. ### Sovereign VPC Runtimes Self-hosted deployments on private Kubernetes clusters or sovereign VPCs, keeping all data inside your security perimeter. ## From POC to production Our practical approach to ensuring agent initiatives advance beyond prototypes into mission-critical systems: Technical, architectural, and business feasibility assessment before writing code. Building LangGraph state graphs with custom tooling and long-term memory. Direct connection to core enterprise systems including ERPs, CRMs, and relational databases. Architecture documentation, evaluation test suites, and continuous knowledge transfer to your team. ## Tailored engineering for your enterprise stack No theoretical slide decks. We deliver working software and audited code that your company fully owns. ### Hugo S. Nascimento We advise CTOs, VPs of Engineering, and technical leaders on designing, auditing, and hardening agent architectures. From initial feasibility audits to complete code handover to your internal team, we deliver deterministic software that you fully own. An engineering lab with over five years of shipping AI products and resilient agent architectures in production. Rua Pais Leme, 215 Conjunto 1713 Pinheiros, São Paulo - Agentic Bootcamp™ - Products - Advisory - Enterprise MCP - The Agentic Canvas™ - Blog - Contact Us - LangChain & LangGraph - Snowflake AI Data Cloud - Databricks Lakehouse Architecture field notes & playbooks sent to your corporate inbox.