> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://taurushq.ferndocs.com/protect-capital/v3.42/reference/authentication/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://taurushq.ferndocs.com/_mcp/server.

# Authentication


## API Docs

- Authentication [Start a login](https://taurushq.ferndocs.com/protect-capital/reference/authentication/start-login.md)
- Authentication [Get an authentication token](https://taurushq.ferndocs.com/protect-capital/reference/authentication/authenticate.md)
- Authentication [List security domains](https://taurushq.ferndocs.com/protect-capital/reference/authentication/get-security-domains.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://taurushq.ferndocs.com/protect-capital/v3.42/reference/authentication/openapi.json)
- [OpenAPI YAML](https://taurushq.ferndocs.com/protect-capital/v3.42/reference/authentication/openapi.yaml)