Lenny's Newsletter · Claire Vo

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What a harness is and how to build one with Claude Agent SDK

8 July 2026Product

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Listen now | 🎙️ I built a custom Claude Agent SDK harness to automate Sentry bug triage, saved the "dear agent, please fix this" prompt forever, and show you exactly how to build your own

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What a harness is and how to build one with Claude Agent SDK

What a founder can learn

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