/Tech8h ago

LangSmith Sandboxes Integrate With Harbor Framework For Stateful Agent Evals

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Harrison Chase@hwchase17#698inTech

harbor is a great framework for running longer running, more stateful agent evals

it underpins terminal bench 2 and is becoming industry standard

LangSmith Sandboxes now integration with harbor!

LangChain@LangChain

LangSmith sandboxes are now a first-class environment in @harborframework 🚀

Install: pip install “harbor[langsmith]”

Authenticate: export LANGSMITH_API_KEY= “<LANGSMITH_API_KEY>”

That's it. Your evals are now ready to run in LangSmith production sandboxes, alongside Daytona, E2B, and Modal.

1:28 PM · Jun 17, 2026 · 5.5K Views

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Users are excited about LangSmith Sandboxes integrating with Harbor because the long-running evals and sandbox features are exactly what the space needed.

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Eclipse 🌖@ECLresearch

@hwchase17 The LangSmith integration is the real signal here — if your CI/CD pipeline links to Harbor, you’ve effectively standardized evals for agentic workflows. Terminal Bench 2 already validated the compute overhead; this just locks the dev tooling layer.

8h2

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Harbor Framework@harborframework

Harrison Chase@hwchase17

harbor is a great framework for running longer running, more stateful agent evals

it underpins terminal bench 2 and is becoming industry standard

LangSmith Sandboxes now integration with harbor!

8h1.7K81

tsunami_crypto@ls_brd

@hwchase17 long running evals and sandbox integration is exactly what the space needed

im gonna mess with this over the weekend

8h1