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## [What is an agent harness?](https://parallel.ai/articles/what-is-an-agent-harness)

AI agents today are more than just standalone models that take in and output text tokens. They operate within an ecosystem of tools, memory stores, and orchestrated workflows that enable them to perform complex tasks. In this context, a new term has emerged in the AI lexicon: the "harness."

Tags:Industry Terms
Reading time: 23 min
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By Parallel

December 16, 2025

What is an agent harness? | Industry terms

## Latest Posts11

What is deep research? | Industry terms
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- [What is deep research? ](https://parallel.ai/articles/what-is-deep-research)

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What is an AI agent? Industry terms
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- [What is an AI agent?](https://parallel.ai/articles/what-is-an-ai-agent)

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- [What is data enrichment?](https://parallel.ai/articles/what-is-data-enrichment)

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- [What is semantic search and how does it work?](https://parallel.ai/articles/what-is-semantic-search)

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- [What is a web index?](https://parallel.ai/articles/what-is-a-web-index)

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- [What is a web crawler and how do they work?](https://parallel.ai/articles/what-is-a-web-crawler)

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What is a web search API? | Parallel
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- [What is a web search API?](https://parallel.ai/articles/what-is-a-web-search-api)

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Web Enrichment for Sales: How AI-Powered Sales Tools Transform CRM Data Intelligence
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- [Web Enrichment for Sales: How AI-Powered Sales Tools Transform CRM Data Intelligence](https://parallel.ai/articles/ai-web-enrichment-for-sales)

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Reading time: 8 min
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