> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://api.docs.modulards.com/_mcp/server.

# Client contact methods

The email and the phone of a client. A client holds at most one of each: setting one replaces the existing method of the same channel, changing it only edits its value, and deleting it removes it.


## API Docs

- Client contact methods [List a client's contact methods](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/list-a-client-s-contact-methods.md)
- Client contact methods [Set a client's contact method](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/set-a-client-s-contact-method.md)
- Client contact methods [Update a client's contact method](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/update-a-client-s-contact-method.md)
- Client contact methods [Delete a client's contact method](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/delete-a-client-s-contact-method.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/openapi.json)
- [OpenAPI YAML](https://api.docs.modulards.com/modular-ds-public-api/clients/client-contact-methods/openapi.yaml)