--- title: "What is mdfy" url: https://mdfy.app/what-is-mdfy updated: 2026-05-08T18:41:49.991Z source: "mdfy-content" --- # What is mdfy *Personal knowledge hub for the AI era.* mdfy is a single URL that holds everything you've ever asked an AI worth keeping — and that any AI tomorrow can read as your context. ## The one-line version A captured ChatGPT answer becomes `mdfy.app/`. Forty captures roll up into `mdfy.app/hub/`. You paste that hub URL into Claude, ChatGPT, Cursor, or Codex and they fetch the whole thing as your personal knowledge layer. Same URL, every AI. ## Why a URL Vendor memory layers (ChatGPT memory, Claude projects, Cursor docs) all live behind walls. They don't talk to each other, you can't share them, and you can't paste them into the *other* tool tomorrow. A public URL is the one format every AI already knows how to read. No SDK, no plugin, no MCP server required. The URL is the contract; mdfy makes the URL. ## Three primitives, one shape - **Document** — `mdfy.app/` — one captured answer, paper, or transcript. - **Bundle** — `mdfy.app/b/` — a curated grouping of docs around a topic, with its own URL. - **Hub** — `mdfy.app/hub/` — your whole knowledge layer as a single deployable URL. Same URL primitive, three scopes. Each one is plain markdown when an AI fetches it. ## Three operations - **Capture** — paste a share URL, drop a file, or run `/mdfy capture` from any coding agent. - **Organize** — captures roll up into your hub; bundles group by topic; auto-synthesis merges new captures into existing wiki pages. - **Deploy** — paste any of the three URLs into any AI; it loads the underlying markdown as context. Or hit `/api/hub//recall` for question-targeted retrieval. ## What's not on the surface Underneath, every doc, chunk, and bundle is automatically embedded (OpenAI `text-embedding-3-small`, idempotent on save). Hybrid BM25 + vector RRF retrieval. Hub-wide semantic graph. Cross-hub citation rollup. The pipeline rivals what backend-only memory systems give you, but the surface stays human-shaped. For the architecture, see [How mdfy works](/how-mdfy-works) and [How mdfy Memory works](/mdfy-memory).