> For the complete documentation index, see [llms.txt](https://docs.umbraco.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.umbraco.com/umbraco-in-ai/concepts.md).

# Concepts

- [Model Context Protocol (MCP)](https://docs.umbraco.com/umbraco-in-ai/concepts/model-context-protocol.md): Effective and optimal communication with large language models (LLMs)
- [Context Engineering](https://docs.umbraco.com/umbraco-in-ai/concepts/context-engineering.md): Effective and optimal communication with LLMs
- [Token Efficiency](https://docs.umbraco.com/umbraco-in-ai/concepts/token-efficiency.md): Managing token usage and MCP tool context to reduce cost and improve agent performance.
- [Agent Skills](https://docs.umbraco.com/umbraco-in-ai/concepts/agent-skills.md)


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