SourceWhale runs a first-party hosted MCP server at mcp.sourcewhale.app/mcp. Claude, ChatGPT and other MCP clients connect with OAuth, and each recruiter signs in with their own SourceWhale account, so existing permissions still apply. The assistant can search people, companies, projects, notes, campaign tasks and CVs, and read full call and meeting transcripts. It can also make four kinds of update, each confirmed before it runs: add a note, edit a person's details, edit custom fields, and move someone through a project pipeline. Read and write tools can be allowed or blocked one by one.