Everyone is talking about agent harnesses, but what exactly is one? Simply put: AI Agent=LLM+Agent Harness @lukeschlangen and @smithakolan break it down on the latest episode of The Agent Factory → goo.gle/4AvE5WN

Sep 25, 2026 · 1:00 AM UTC

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Great breakdown that LLM + harness equation makes it click instantly!
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Where's memory kept in that breakdown, inside the harness or counted as its own layer above it?
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A useful way to explain Google's harness equation: replace the model and ask what still belongs to your application. Customer state, tool contracts and completion criteria should survive the swap. If they don't, a model upgrade becomes a workflow rewrite.
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Great explainer AI Agent = LLM + Harness is the clearest definition of what makes agents actually work!
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This is a helpful definition. The harness is where many practical safety decisions live too, including permissions, memory, tool boundaries, monitoring and what happens when the model is unsure.
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What is an agent harness? @grok
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Which harness controls should limit tool permissions when agents operate unattended?
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Sounds like a recipe for AI success 🍰🤖! LLM+Agent Harness = Win combination, can't wait to tune in and see how @lukeschlangen and @smithakolan make it work, What do you guys think? 🤔
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what part of the breakdown actually changes how you build
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Great explanation making agent harnesses much easier to understand
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Great breakdown finally makes the agent harness concept super clear
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The wrapper around the model is doing more work than people admit
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Great breakdown, agent harnesses finally explained simply
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The harness is where reliability becomes a product surface: tool permissions, state checkpoints, retries, and traces. I’d benchmark those separately from the base model so regressions stay attributable.
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