> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.getdial.ai/api-reference/rest-api/authentication/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.getdial.ai/_mcp/server.

# Authentication


## API Docs

- Authentication [Request a sign-up code](https://docs.getdial.ai/api-reference/rest-api/authentication/signup.md)
- Authentication [Verify a sign-up code](https://docs.getdial.ai/api-reference/rest-api/authentication/verify-signup.md)
- Authentication [Register a phone number](https://docs.getdial.ai/api-reference/rest-api/authentication/register-number.md)
- Authentication [Verify a phone number](https://docs.getdial.ai/api-reference/rest-api/authentication/verify-number.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://docs.getdial.ai/api-reference/rest-api/authentication/openapi.json)
- [OpenAPI YAML](https://docs.getdial.ai/api-reference/rest-api/authentication/openapi.yaml)