> For the complete documentation index, see [llms.txt](https://rest-api.symphony.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rest-api.symphony.com/main/info-health-check.md).

# 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.