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What is Capsule?

Capsule is a lightweight CLI agent that runs on your server and backs up your databases on a schedule. Every backup is AES-256 encrypted on your server before being pushed to Capsule’s cloud — we only ever receive ciphertext.

Quickstart

Install the agent and run your first backup in under 5 minutes.

CLI Reference

Full reference for every Capsule command.

Database Guides

Setup guides for PostgreSQL, MySQL, and MongoDB.

Security

How Capsule protects your data — and how to verify it yourself.

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How it works

  1. You install the Capsule agent on the server where your databases run
  2. The agent connects to your databases using credentials stored locally — they never leave your server
  3. On schedule, Capsule runs the native dump tool (pg_dump, mysqldump, mongodump) on your server
  4. The output is AES-256 encrypted locally, then uploaded to Capsule’s cloud
  5. Backup history and connection status sync to your web dashboard

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Supported databases

Remote host means Capsule can back up a database running on a different machine — it connects over the network using the credentials you provide, the same way a database client would. This is a Pro/Team feature — Hobbyist and Solo plans can only connect to databases on localhost (or a Unix socket). See Connection limits for details.

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Architecture

Capsule uses a zero-knowledge architecture — your credentials and plaintext data never reach our servers. See the security page for a full breakdown and instructions on how to verify this yourself.