Before you sign up.
Sinew is an independent product — not made by, affiliated with, or endorsed by Anthropic. It's infrastructure that connects to Claude and gives it persistent memory and real-world tools.
How it works.
Sinew has two parts. A Windows desktop app called Desk Scheduler runs on your machine — it orchestrates everything by invoking Claude Code on a schedule. A cloud service called SinewMCP provides the tools Claude uses: email, calendar, tasks, memory, and transcripts.
When you're not at your desk, Desk Scheduler is still running — scanning your email, extracting action items from meetings, building context. When you sit down and open Claude, all of that context is already there.
What you need.
Sinew is the infrastructure — memory, email integration, scheduling, tools. Claude is Anthropic's AI — the intelligence. They're separate products, separate companies, separate subscriptions. Sinew connects to Claude via MCP (Model Context Protocol).
What it costs.
$9.99/mo
Plus your Claude subscription — $20 or more per month, paid directly to Anthropic. Not through Sinew.
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