🔐 Privacy & Security
What exactly does EiraSync know?
We believe in technical transparency over marketing promises. Here is exactly what our infrastructure has access to:Can EiraSync read my notes?
No. LiveSync performs end-to-end encryption (E2EE) on your device before synchronized data is sent to EiraSync. EiraSync does not receive the E2EE passphrase required to decrypt your vault data, so the service cannot decrypt the encrypted vault contents using information stored in your account.How does the encryption work technically?
LiveSync encrypts your vault directly on your device with a passphrase only you know. Encryption and decryption happen locally in Obsidian — never on our servers. Only ciphertext ever reaches us; we store and sync encrypted data blocks only.What is the difference between the Setup URI passphrase and the E2EE passphrase?
- The Setup URI passphrase protects the
obsidian://setuplivesync...link containing the connection settings required to configure the LiveSync plugin. - The E2EE passphrase protects your synchronized vault data. LiveSync uses it as input for the encryption and decryption process on your devices.
What happens if I lose my E2EE passphrase?
Your E2EE passphrase is not stored by EiraSync. If you lose it, EiraSync cannot recover it for you, and we cannot decrypt your existing encrypted vault data on your behalf. Keep your passphrase in a secure password manager.Where is my data stored?
EiraSync separates account management from synchronization infrastructure. The sync data plane runs on dedicated Hetzner infrastructure in Germany. The control plane (authentication, account data, and billing metadata) runs separately on Supabase in Frankfurt (eu-central-1). This limits the scope of each system and ensures the control plane does not need access to your vault data.⚙️ Architecture & Technology
What exactly is the Setup URI?
EiraSync generates an encryptedobsidian://setuplivesync... link containing the connection settings required to configure the LiveSync plugin. This eliminates the need to manually configure CouchDB credentials and database names.
Does every vault have its own database?
Yes. Each vault is provisioned as a separate CouchDB database (e.g.,v_abc123) with its own database credentials and access permissions. A user’s CouchDB credentials are strictly restricted to their specific vault database.
Are there any sync limits?
EiraSync applies infrastructure-level safeguards to prevent abusive or accidental request bursts. These limits are designed to be invisible during normal LiveSync usage, including initial vault synchronization. EiraSync currently limits individual CouchDB documents to approximately 10 MB, including encryption overhead. LiveSync automatically chunks larger files into smaller pieces, so this normally does not affect ordinary notes and attachments. For very large binary files, dedicated object storage may be more appropriate than storing them directly in a sync vault.Why does my vault slowly get bigger during the day?
CouchDB keeps document revisions, so the physical database size can temporarily grow even when the logical amount of data in your vault has not changed. EiraSync automatically performs database compaction on a scheduled basis to reclaim storage from obsolete revisions.🔄 LiveSync & Usage
Does EiraSync replace LiveSync or Obsidian Sync?
EiraSync does not replace Obsidian or the LiveSync plugin. EiraSync provides the managed CouchDB infrastructure used by the open-source “Self-hosted LiveSync” community plugin. We are an independent hosting provider and not an official Obsidian product.Can I use EiraSync without giving EiraSync access to my Obsidian account?
Yes. EiraSync does not require access to your Obsidian account. It works with the open-source Self-hosted LiveSync plugin installed locally in Obsidian.Can I migrate an existing LiveSync vault?
Yes. If your notes are already stored locally in Obsidian, you can connect that vault to EiraSync and initialize the new EiraSync backend from it. If you are migrating from an existing remote LiveSync/CouchDB installation, we highly recommend creating a local backup first and following the plugin’s official migration path rather than blindly replacing the remote database.Why do I sometimes see a “401 Unauthorized” error?
Some LiveSync maintenance or administrative operations require permissions that EiraSync deliberately does not grant to individual vault credentials. These operations may therefore return401 Unauthorized. This does not mean that your normal synchronization credentials are invalid. If ordinary synchronization is working, the error can usually be ignored.