# Info - Health Check

- [Health Check](https://rest-api.symphony.com/main/info-health-check/health-check-v3.md): Returns the connectivity status of your Agent service.
- [Health Check Extended](https://rest-api.symphony.com/main/info-health-check/health-check-extended-v3.md): Returns the connectivity status of the Agent services as well as users connectivity.
- [Session User](https://rest-api.symphony.com/main/info-health-check/session-info-v2.md): Returns the userId of the calling user.
- [Agent Info](https://rest-api.symphony.com/main/info-health-check/agent-info-v1.md): Gets configuration and deployment information about the Agent service.
- [Echo](https://rest-api.symphony.com/main/info-health-check/echo.md): A test endpoint, which simply returns the input provided.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://rest-api.symphony.com/main/info-health-check.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.