> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/build/integrate-ai/understand-ai-components.md).

# Understand AI components

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[What chains do](/build/integrate-ai/understand-ai-components/what-chains-do.md)
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[What agents do](/build/integrate-ai/understand-ai-components/what-agents-do.md)
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[How memory works](/build/integrate-ai/understand-ai-components/how-memory-works.md)
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[How tools work](/build/integrate-ai/understand-ai-components/how-tools-work.md)
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[Store and search data with vectors](/build/integrate-ai/understand-ai-components/store-and-search-data-with-vectors.md)
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[Retrieve relevant context](/build/integrate-ai/understand-ai-components/retrieve-relevant-context.md)
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[Agents vs chains](/build/integrate-ai/understand-ai-components/agents-vs-chains.md)
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