Verified🔒 Security
Bossanova
Bossanova is a proprietary encrypted local vault for Windows and macOS. Approved MCP clients can use named private fields in HTTPS requests or program execution; stored private values are not returned in ordinary tool responses by default. Connection approval, field-level AI access and destination/program approval are separate. Receiving APIs and approved environment/file-carrier programs get the real values; other files, process memory and clipboard are not isolated. Account and periodic online license checks are required. No automatic cloud sync or team RBAC. Free: 10 fields on 1 device. Monthly-billed Plus: USD 2.99 for 100 fields on 2 devices. Pro: USD 5.99 for unlimited fields on 5 devices. Annual options are billed upfront. Install the desktop app and use its generated setup for Claude Desktop, Claude Code or OpenAI Codex CLI.