GitSync.md Connect

A companion community plugin for Obsidian on iPhone and iPad. Sign into GitHub in GitSync.md, clone a repository, then let this plugin configure Obsidian Git without asking for another GitHub sign-in.

Install

Install GitSync.md Connect from its Obsidian community directory listing: select Add to Obsidian, then Install and Enable in Obsidian. No file copying or build tools are needed for directory installation. All automated checks pass for version 0.1.2, including byte-for-byte build verification.

App compatibility: connecting requires GitSync.md 2.8.0 or later with companion handoff support. Build 202610141413 is waiting for Apple App Review and will require manual release after approval. Installing the plugin alone does not add handoff support to older app versions.

1. In the compatible GitSync.md app, sign into GitHub, clone your GitHub HTTPS repository into a local folder Obsidian can open, and open that folder as a vault in Obsidian.
2. In that vault, open Settings → Community plugins, enable community plugins, and install and enable Git by Vinzent.
3. Open the GitSync.md Connect listing and select Add to Obsidian. Confirm you are in the cloned vault, then select Install and Enable. Alternatively, use Settings → Community plugins → Browse, search for GitSync.md Connect, and install and enable it there.
4. With both plugins enabled, the companion opens GitSync.md and returns to Obsidian with the connection configured. Missing Git author name/email are filled from GitSync.md. No second GitHub sign-in or token copy is needed. If it does not start, reopen the vault or run GitSync.md Connect: Connect this vault.

Install both plugins separately in each vault you want to connect. The account dashboard is for maintainers; users should use the public listing above.

Manual installation fallback

If directory installation is unavailable, download main.js and manifest.json. Create .obsidian/plugins/gitsync-connect/ inside the vault, copy both files into it without renaming them, reload Obsidian, and enable GitSync.md Connect. On iOS, a computer or file manager that can access hidden .obsidian folders may be needed. Install and enable Git as described above.

Developers can build locally with npm run release:prepare. See release instructions.

You can install the companion after cloning: connection requests remain valid for seven days. The app prepares requests for GitHub HTTPS clones authenticated with its GitHub OAuth/PAT account; opening that repository as an Obsidian vault activates the handoff. Public unauthenticated, SSH, non-GitHub and per-repo HTTPS-token clones are excluded. The vault must use a regular .git directory at its root, without custom Git directory/base-path settings or alternate push destinations.

Commands and troubleshooting

• Connect this vault renews the connection request and retries an interrupted connection. Reopen the vault after enabling Git if its initialization is still underway.
• Reconnect this vault (replace existing Git credentials) renews the connection request and explicitly permits replacing existing credentials. Automatic connection preserves existing credentials.
• If a request has expired or has already been consumed and you need a new token, sign into the appropriate account in GitSync.md and run Reconnect this vault. This preserves your working copy. The preview does not perform background token refresh or automatically revoke the imported token when signing out of GitSync.md.
• An encrypted response expires after five minutes. If Obsidian cannot import it within that time, run Connect this vault to renew the request.
• Obsidian Git 2.41.1's device-local credential API is supported. The upcoming gitServerPassword API is detected and used when available. These are plugin internals, so future Obsidian Git changes may require a companion update.
• This preview connects credentials; it does not configure automatic sync intervals, install Git for you, or change Obsidian Git's mobile Git implementation.

Accounts, network use, and cost

The companion is free and MIT licensed. It requires the separate GitSync.md iOS app, a GitHub account authenticated in that app, and the Git community plugin by Vinzent. GitSync.md is a separate product with its own pricing and feature availability; see gitsync.md. No additional account or subscription is created by this companion.

This companion makes no direct HTTP requests. It switches between Obsidian and GitSync.md using local URL schemes and exchanges encrypted data inside the selected vault. GitSync.md uses GitHub for authentication and cloning; Obsidian Git uses GitHub for repository operations such as pull and push. The companion does not read files outside the vault, collect analytics, install other plugins, or update itself. GitSync.md is a separate native application; the included Swift file is the handoff implementation used for protocol tests, not the complete app source.

Credential handling

GitSync.md retains its original token in Keychain. It stores a nonsecret, expiring request under .git/gitsync-obsidian/, with a separate native binding to the repository and granted folder. The companion generates a P-256 key pair using Web Crypto and stores its private key in Obsidian's per-vault, device-local storage. Only its public key goes into the vault.

The companion opens syncmd://obsidian/connect with repository/request IDs and the vault name. The app checks its native binding, granted folder, request lifetime, auth method and unchanged GitHub HTTPS origin. It reads the public key from that same folder, encrypts the token with ephemeral P-256 ECDH, HKDF-SHA256 and AES-256-GCM, writes response.json, and consumes the native binding. The callback to obsidian://gitsync-connect contains only status, vault and request ID. Tokens and private keys never appear in callback URLs.

Obsidian verifies and decrypts the response, then fills missing repository author fields from the clone configuration and configures Git's device-local credential storage (2.41.1) or its secret storage API (when available). After successful import it removes the request, recipient and encrypted response, then clears the private key. Nonsecret connection.json metadata remains under .git to support explicit reconnection without another clone. Pending files live under .git, so normal Git staging cannot commit them. Neither app sends credentials to a new server.

The imported token has the same permissions as the GitSync.md token. Obsidian Git 2.41.1 stores it in device-local browser storage, not an OS Keychain; the companion does not improve that plugin's storage guarantees. Enabled plugins and applications with access to the vault are trusted participants. OAuth token revocation or expiry affects both clients. GitSync.md sign-out does not remove Obsidian's imported copy; revoke the token in GitHub or clear it in Obsidian Git to disconnect both.

Development and validation

npm test runs Node tests and compiles a Swift/CryptoKit fixture using the macOS Xcode toolchain. It exercises the actual Swift producer against the JavaScript consumer, credential installation for both storage APIs, cleanup/replay rejection, token overwrite protection, expiry, ciphertext tampering, wrong keys, changed origin URLs, ambiguous Git config and symlink rejection. All credentials in fixtures are fictional.

npm run build produces the dependency-free mobile-compatible CommonJS bundle, installation folder and zip. src/connection.js is the protocol/crypto implementation; src/main.js wires Obsidian lifecycle, commands and URL callbacks. No Node APIs are used in the plugin runtime.

The initial candidate passed the app-switch round trip and a real private-repository pull and push on a physical iPhone. Before each release, verify the app-switch round trip and a real Obsidian Git pull/push on an iPhone with a disposable private GitHub vault. Automated tests do not establish real-device Obsidian lifecycle behavior.

Credential APIs were checked against Obsidian Git 2.41.1, its upcoming secret storage implementation, and the Obsidian API.

License

MIT. See CHANGELOG for changes.