Unverified50% confidenceFactExact time
In LLM and agent engineering, a harness refers to a layer of software infrastructure outside the model that is responsible for organizing "a single model call" into "a system that can complete tasks", with typical responsibilities including tool calling, state management, error recovery and the orchestration loop.
1
Sources
50%
Confidence
Long-term
Relevance
10/19/2026
First Seen
Sources
Google Research Introduces Harness2: A Recursive Agent Framework Draws Attention
hackernewshackernews10/19/2026
Related Entities
Related Claims
UnverifiedA harness is a deterministic framework designed by software experts that manages state, executes build commands, runs linters, captures standard error output, and appends the logs back into the LLM context, prompting a statistical correction.79% similarUnverifiedA system that connects models, tools, state, and feedback is commonly referred to as a Harness, i.e., the operational framework of an agent.79% similarUnverifiedThe core idea of the Harness architecture (Agent Harness) is to provide scaffolding for LLMs, enabling them to perform complex multi-step, cross-tool tasks, covering mechanisms such as context management, tool management, execution state management, context compression, and prompt engineering76% similarUnverifiedThe tool description (Tool Schema) determines whether the LLM can select the tool in the correct scenario and correctly fill in the parameters, and is a key engineering detail for the stable operation of the Agent.75% similarVerifiedThe tool-calling (Function Calling / Tool Use) capability enables LLMs to output structured intent instructions, which are captured by an external execution layer to actually operate on systems.75% similar
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