Unabyss

Two-way OAuth sync between your Obsidian vault and your Unabyss memory.

• Push your notes into Unabyss as incremental, change-aware deltas.
• Pull Unabyss-generated exports back into a folder you pick inside the vault.
• File-change-driven outbound sync with a 5-second debounce, plus a daily safety-net timer that runs both directions regardless of events.

Features

• OAuth 2.0 + PKCE connect / disconnect against the Unabyss backend.
• Manifest-first delta protocol: only files whose content hash the server doesn't already have are uploaded.
• Inbound puller: every export in GET /api/exports/changed-since/ is mirrored as <slugified-title>.md in your chosen folder.
• Configurable behaviour when an export is deleted in Unabyss: leave the local file, delete it, or move it to a Deleted/ subfolder.
• Per-direction enable / disable toggles - either direction can be turned off without uninstalling the plugin.
• Per-direction live progress indicator inside the settings tab.
• Ribbon icon in the left toolbar that opens the Unabyss settings tab.
• Force-full-resync button that wipes the local hash cache + inbound watermark and re-checks every file with the server.
• Per-note 1 MiB size cap (oversize notes are skipped with a notice).
• Empty and whitespace-only notes are skipped client-side (the upload API rejects blank bodies; skipping them keeps the rest of the batch syncing).
• Local hash + mtime cache to skip re-hashing unchanged files.

Installation

Obsidian Community Plugins (recommended)

1. Open Obsidian -> Settings -> Community plugins -> Browse.
2. Search for Unabyss, click Install, then Enable.

BRAT sideload (beta releases)

1. Install the BRAT community plugin.
2. Open Obsidian -> Settings -> Community plugins -> BRAT -> Add Beta plugin and paste this repository's URL.
3. Enable the Unabyss plugin in Settings -> Community plugins.

Manual install

1. Clone this repository.

2. From the repository root run:

   pnpm install
   pnpm build
   

3. Copy main.js, manifest.json, and styles.css into <vault>/.obsidian/plugins/unabyss/ (create the folder if it doesn't exist). manifest.json and styles.css live in the repository root; pnpm build produces main.js.

4. Enable the plugin in Settings -> Community plugins.

5. A Unabyss icon appears in the left ribbon - click it to open the plugin settings.

Configuration

Open Settings -> Community plugins -> Unabyss.

Usage

Open the Unabyss settings any time from the ribbon icon in the left toolbar, or via Settings -> Community plugins -> Unabyss.

First connect

1. Click Connect in the settings tab. Your browser opens the Unabyss consent page; sign in if needed and click Allow.
2. Obsidian focuses back to your vault. The settings tab now reads "Connected as <your email>".

Outbound (Obsidian -> Unabyss)

• Once connected and with the include-folder list configured to your taste, every modify / create / delete on a markdown file kicks off a debounced outbound sync after 5 seconds of quiet.
• Manual: Settings -> Unabyss -> Sync now (or the command palette: Unabyss: Sync outbound now).
• The daily safety-net timer fires both directions regardless of file events, so the plugin recovers from missed events and external file-system writes.

Inbound (Unabyss -> Obsidian)

• Pick an Export target folder in settings.
• Each export gets written as <slug>.md (e.g. daily-summary-2026-01-15.md). On slug collision with a different export, the plugin appends -<first-6-of-uuid> to the filename so no unrelated note is overwritten.
• Every written file carries a stable trailer line at the bottom: <!-- unabyss-export-id: <uuid> -->. Do not delete this line if you want the plugin to recognise the file as the same export on the next sync.
• Soft-deleted exports honour your When an export is deleted in Unabyss setting.
• Manual: Settings -> Unabyss -> Sync now or the command palette: Unabyss: Sync inbound now.

Disconnecting

Click Disconnect in the settings tab. The plugin calls POST /api/oauth/revoke/ to blacklist its refresh tokens server-side and clears the local data.json token entries. You can also revoke from the Unabyss web app's connected-accounts page if your machine is inaccessible.

Security and threat model

This plugin stores OAuth tokens in <vault>/.obsidian/plugins/unabyss/data.json, which is plaintext JSON on disk.

• Anyone with read access to your vault folder can read these tokens and use them to access your Unabyss account until you click Disconnect (which revokes them server-side).
• Tokens are also synced by Obsidian Sync, iCloud, Dropbox, or any other sync layer you configure for your .obsidian/ directory.
• If you suspect your tokens were leaked, click Disconnect in the plugin settings; the OAuth refresh tokens are blacklisted immediately on the server. You can also revoke from the Unabyss web app's connected accounts page.

OS-keychain integration is on the roadmap. If plaintext token storage is unacceptable for your threat model, do not install this plugin yet.

Troubleshooting

• "Connect failed: state_mismatch" - the browser tab took too long to complete the consent flow, or you opened multiple Connect tabs. Click Connect again.
• "Authentication has expired" - the refresh-token rotation failed. Click Disconnect (or Connect again, which clears the stale state).
• Sync rejects notes with hash_mismatch - this is the server rejecting a row whose content changed between the manifest scan and the body upload. Re-running Sync resolves it.
• Inbound sync skips everything - the Export target folder setting is empty. Pick a folder via the type-ahead in settings.
• "Inbound target X exists but is not a folder" - the chosen target path is a file. Pick a different folder.
• Exports keep coming back after I delete them locally - your When an export is deleted in Unabyss setting is "Leave"; the plugin won't touch local files even when the server soft-deletes the source export, but it will keep re-writing the file if the export is not deleted server-side. Delete the export in the web app first.

Development

pnpm install
pnpm run dev        # esbuild watch mode
pnpm run typecheck  # tsc -noEmit
pnpm test           # jest unit suite
pnpm run build      # production bundle

Local testing in a vault

Symlink the repository into your vault's plugins folder so pnpm run dev rebuilds the plugin in place:

ln -s "$(pwd)" "<vault>/.obsidian/plugins/unabyss"

manifest.json and styles.css already sit in the repo root and pnpm run dev keeps main.js current, so the symlinked folder always has the three files Obsidian loads (the extra source / node_modules files are ignored). Enable Unabyss in Settings -> Community plugins, then reload Obsidian (or toggle the plugin off/on) after each build to pick up changes.

The unit suite covers:

• PKCE S256 round-trip (tests/oauth.test.ts).
• Manifest cache load/save/clear semantics (tests/manifestCache.test.ts).
• Slugify + collision-suffix policy (tests/slugify.test.ts).
• Inbound watermark advancement on partial-page failure (tests/syncInbound.test.ts).

Anything that touches the Obsidian runtime (Vault, App, Plugin, requestUrl) is dependency-injected at the call site, so the tests do not require Electron.

License

MIT.