dyer.md is a Markdown-native knowledge workspace built for the age of AI agents. dyer.md stores everything as plain .md files with YAML frontmatter. You own the files. Git tracks every change. E2E encryption protects what’s sensitive. And here’s the kicker — a built-in MCP server lets AI agents (Claude, Cursor, Windsurf, etc.) search, read, and update your vault through scoped, permission-controlled Vault Keys.