Your data
stays with you.

Your vault. On your GitHub. Notes on every device.

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Self-host in one click. Attach a /data volume so users survive redeploys.

Sign in

Connect a repoInstall the GitHub App.

SyncThis server commits to main.

Quiet by default. Yours throughout.

Sign in, connect one repository, and keep writing. Devices stay in step. AI talks to your notes only with a token you mint.

Every deviceThe same plugin on desktop, Android, and iOS. No Electron, no extra client.

Your GitHubOptional backup on main. You own the repo. This server never asks for a personal access token.

MCP, on your termsSearch and read are enough for most agents. Create and modify stay off until you allow them.

The same vault, wherever you write.

Obsidian stays the editor. Syncidian is the quiet layer underneath — phones, laptops, and the agents you invite.

Privacy first

We keep the connection, not the notes.

No profiles. No ads. No mining your notes. Your vault lives in Obsidian, and in the GitHub repository you connect — not as our product.

What we store

Only what it takes to know your devices are connected and in sync.

Connected devicesHow many devices are linked, and the name you gave each one.
PlatformmacOS, Windows, Linux, Android, or iOS — plus the plugin version on that device.
Sync healthLast seen, last successful sync, sync count, and how many files moved. Counts, not the notes themselves.

Access tokens are stored hashed. GitHub App secrets are encrypted. MCP never stores note bodies. Operators cannot open another person’s vault.

A note from the maker

Securing my second brain:

I built Syncidian after fighting the usual options. Git Sync. The GitHub plugin. They almost worked — until they didn’t. A conflict in the middle of a thought. A desktop-only dance. A vault that felt one bad pull away from a mess.

I still wanted GitHub as the place the notes live. If you are already trusting GitHub with your work, you can trust this. Syncidian is the quiet layer in between: a plugin you add, a server you run, and commits to a repository you own.

The history of all your notes should be real history. We all know that no one else does it better than Git.

Cheers to Linus Torvalds.
— Shangeeth