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Documentation Index
Fetch the complete documentation index at: https://modelcontextprotocol.io/llms.txt Use this file to discover all available pages before exploring further.
Overview
Servers provide the fundamental building blocks for adding context to language models via MCP. These primitives enable rich interactions between clients, servers, and language models:
- Prompts: Pre-defined templates or instructions that guide language model interactions
- Resources: Structured data or content that provides additional context to the model
- Tools: Executable functions that allow models to perform actions or retrieve information
Each primitive can be summarized in the following control hierarchy:
| Primitive | Control | Description | Example |
|---|---|---|---|
| Prompts | User-controlled | Interactive templates invoked by user choice | Slash commands, menu options |
| Resources | Application-controlled | Contextual data attached and managed by the client | File contents, git history |
| Tools | Model-controlled | Functions exposed to the LLM to take actions | API POST requests, file writing |
Explore these key primitives in more detail below:
Last updated Oct 08, 2026