most of the agents we see being built do this the main cases where we see people using 'agent in a sandbox' is when they are using claude ag…

most of the agents we see being built do this the main cases where we see people using "agent in a sandbox" is when they are using claude agent sdk (which is poorly designed for "harness outside sandbox") @hwchase17 Do you also move the harness it outside the sandbox like managed agents?

if you want claude's managed agents w/o model provider lock in, this is the path! deepagents deploy lets you deploy an agent built on our …
what he said 🗣️ the very best agents today obsessively tailor the harness layer around the model I’m looking at you “5 things I learned fro…
'Claude Code isn't magic. The harness layer is just software, and software is something any dev can shape to fit how they want to work.' Che…
Introducing Claude Managed Agents: everything you need to build and deploy agents at scale. It pairs an agent harness tuned for performance …
the real future of the very best vertical products is Model/Harness Choice + Openness easy to deploy infra is nice (great release from Ant) …

Source: Harrison Chase (X) | 2026-04-09

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