> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://api.docs.modulards.com/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.