5 tagged fastmail, measured the same way as everything else here.
Skill Claude CodeCodex
Skill "api-implementation" from pjosols/pyfastmail-mcp, covering api implementation, jmap (mail, masked email), dav protocols (contacts, calendars, files), carddav (rfc 6352) — contacts and caldav (rfc 4791) — calendars.
Skill Claude CodeCodex
Skill "project-architecture" from pjosols/pyfastmail-mcp, covering project architecture, package layout, key patterns and adding a new tool.
Skill Claude CodeCodex
Skill "tool-registration" from pjosols/pyfastmail-mcp, covering mcp tool registration, pattern, guidelines and registration pattern (per module).