SecondSecond, everywhere you work
Capture from the browser, the desktop, or the terminal — and let your tools and agents work within the permissions you choose.
AI connection availability
ChatGPT Web and Claude Web have completed live read-and-save checks; Claude Desktop has completed a connected read check. Other clients and mobile surfaces depend on their own account, plan, and connector support. Setup packages are not app-directory approvals.
A connector can only save conversation text or file bytes the host supplies. For missing transcripts, selected replies, or originals, use an explicit export or paste. A summary is not a complete transcript. Notion OAuth also depends on service configuration; token-based connection remains available.
Capture from anywhere
Available
Second for Mac
Apple silicon, macOS 13+. Local library, menu-bar capture, organization, search, and optional account sync. The direct download uses Sparkle updates; connected AI requires a network.
BetaSecond for iPhone & iPad
iPhone and iPad companion with Inbox, PARA, Search, Assistant, share sheet, widget, and Shortcuts. Pending captures survive offline periods. App Store distribution is in preparation; no public install is offered here.
AvailableChrome extension
One keystroke to save any page, selection, or tab set.
Source / developmentSafari extension
Safari capture is packaged for the native Apple apps. Source and release bundles are available for development; this is not a public App Store install.
Available
CLI — second
Scriptable captures, triage, import, and export — brew install thedevdavid/tap/second.
BetaObsidian
Sync Markdown between your vault and Second with the plugin, installed through BRAT or release files. One-time vault import is also available through the CLI. Deletions are not propagated.
BetaApple Notes
Connect Apple Notes through the Mac app or import with the CLI. Requires macOS permissions. Integration sync does not propagate permanent deletions.
Import your existing notes
AvailableNotion sync
Connect with a Notion integration token for scheduled sync, or import pages once without retaining that token. Sync creates excerpts and updates supported metadata; it is not full-body round-trip editing. Archive propagation is opt-in; permanent deletions are not propagated.
For developers & agents
BetaAI apps via MCP
Connect a compatible AI app with read, save, or organize permissions and selected destinations. Search saved knowledge, save supplied content and originals, or review organization proposals. Manage and revoke access in Integrations.
AvailablePublic API + OAuth 2.1
REST /api/v1 with sb_ tokens, plus a full OAuth 2.1 provider with PKCE and dynamic client registration.