At work I’m running a CKEditor 5 migration from v26 to v47 across some twenty in-house plugins. Instead of tracking it all by hand, I wrote ckeditor_audit: a read-only MCP server that sorts every plugin into four migration statuses, flags what’s live in production, searches the code with ripgrep + ast-grep, and cuts the AI token bill by 80 to 95%.
Composable Claude Code skills turned a pile of unreviewed real-estate listings into a repeatable pipeline: one skill reviews a single listing, another loops over a site, a third fans out across all sites — each with its own guardrails and an audit gate before anything publishes.
How I built a schema-driven MCP server that lets an AI assistant manage many heterogeneous WordPress sites through a single typed interface — architecture, trade-offs and lessons learned.