Agents
>LangChain gives you testing tools. It never tells you what to test, in what order, or when you're done. This is changing soon Launching May…
LangChain is introducing new testing tools and capabilities that will help developers with test guidance, organization, and completion criteria—moving beyond just providing testing infrastructure to a
LangChain is introducing new testing tools and capabilities that will help developers with test guidance, organization, and completion criteria—moving beyond just providing testing infrastructure to actively directing what, when, and how to test LLM applications. This enhancement was announced as launching in May by LangChain creator Harrison Chase.
Related
- Just read @hwchase17’s excellent thread on why agent harnesses are becoming the dominant way to build agents and why they’re intimately tied…
- I think you should build your own harness too. Build on primitives. Models come and go.
- We just dropped a comprehensive guide on taking long-running agents to production. It covers the infrastructure you'll need to run and impro…
- Awesome post by @LangChain team on “How We Made Our Docs Test Themselves”. Devtools companies that grok how important technically accurate…
- your harness = your memory if you'd rather read in blog form, link here: https://blog.langchain.com/your-harness-your-memory/
Source: Harrison Chase (X) | 2026-04-22