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Update mcp server documentation with additional information (#37248)

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source/_integrations/mcp_server.markdown
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@ -34,8 +34,10 @@ The integration provides the following configuration options:
{% configuration_basic %}
Control Home Assistant:
description: The API to use to expose tools over the Model Context Protocol. Clients
can only control or provide information about entities that are [exposed](/voice_control/voice_remote_expose_devices/) to it.
description: The API to use to expose tools over the Model Context Protocol. It is recommended
to use **Stateless Assist** which is a version of the **Assist** API where the
prompt does not contain any state information. Clients can only control or
provide information about entities that are [exposed](/voice_control/voice_remote_expose_devices/) to it.
{% endconfiguration_basic %}
## Architecture overview
@ -109,7 +111,8 @@ to allow Claude for Desktop to access Home Assistant using the SSE transport.
```
5. Restart Claude.
6. You will see a connection icon {% icon "mdi:connection" %} if things are set up correctly. Clicking the connection icon will show enabled MCP servers such as *Home Assistant*.
7. You can then use Claude to control Home Assistant similar to how you control Home Assistant through the Voice Assistant. Claude wil ask you for permission before calling any tools.
7. Select the prompt provided by Home Assistant.
8. You can then use Claude to control Home Assistant similar to how you control Home Assistant through the Voice Assistant. Claude wil ask you for permission before calling any tools.
![Screenshot of Claude for Desktop adding an item to a Home Assistant To-do list](/images/integrations/mcp_server/claude-todo-list-control.png)
@ -122,6 +125,17 @@ to allow Claude for Desktop to access Home Assistant using the SSE transport.
perform actions through Home Assistant. The tools used by the configured LLM API
are exposed.
### Prompts
The [MCP Prompts](https://modelcontextprotocol.io/docs/concepts/prompts) provided
inform LLMs how to call the tools. The tools used by the configured LLM API
are exposed.
It is recommended to use the **Stateless Assist** API since the prompt does
not contain any state information, which will be incorrect after any actions
are performed.
## Known Limitations
The Home Assistant Model Context Protocol integration currently only supports a
@ -129,12 +143,13 @@ subset of MCP features:
| Feature | Supported by Home Assistant |
| ------- | --------- |
| Prompts | ❌ |
| Prompts | ✅ |
| Tools | ✅ |
| Resources | ❌ |
| Sampling | ❌ |
| Notifications | ❌ |
Home Assistant does not yet provide built-in tools that can fetch device state.
## Troubleshooting