A local knowledge vault and multi-model canvas that keeps notes as plain files on your disk. Point it at the folder you already have — Obsidian vaults included. No import, no lock-in.
Vault
The vault is a folder of plain markdown files you already own. Write with wikilinks — [[like this]] — and Grafyn builds the backlink graph, full-text search, and topic hubs (index pages for recurring subjects) on your disk.
Canvas
The canvas is a workspace that sends one prompt to several models side by side. It pulls your relevant notes in as context. Pin what must be included, branch answers, and make the models debate.
Twin
The twin is an experimental profile of what you accept, reject, and prefer, stored as evidence-linked records in your vault that you can review, endorse, or delete. Experimental, and honest about it.
Notes, indexes, canvas sessions, and twin records live under~/Documents/Grafyn/. There is no Grafyn account and no Grafyn cloud.
Two things: update checks, which ask GitHub whether a newer release exists, and the prompt context you choose to send to a model runtime — a hosted API like OpenRouter, or models running on your own machine with Ollama. Nothing is sent without a prompt from you.
A small local server (MCP) ships with the app so tools like Claude Desktop can search and write the same files. It only runs while the app runs.