Requirements

Five things. None of them surprises.

Before you buy, make sure you have:

• A Mac. Pemberton is Mac-only at launch. Windows and Linux are on the list, not shipping yet.
• The Claude Desktop app. Free download from claude.com/download. The same Claude you already use on the web, as a Mac app.
• A Claude Pro or Max plan — $20/mo (Pro) or $100+/mo (Max), billed by Anthropic, separate from Pemberton. Pemberton dispatches Haiku subagents on your plan to read and distill your sources; the Free tier won’t let it.
• About five minutes the first time you run it.
• $3.99, once, for Pemberton itself.

That’s the whole list.

Why Pro or Max?

Pemberton works by dispatching dozens of small Haiku reads in parallel — one per batch of notes, transcripts, or drafts — and consolidating the output into your wiki. That dispatch goes through your own Claude account’s quota. The Free tier blocks subagent dispatch and rate-limits long sessions, so the build either fails or stalls.

If you don’t have Pro or Max, don’t buy Pemberton yet. Get Pro from Anthropic first, confirm it works for you, then come back. Buying Pemberton without Pro/Max means it won’t run.

What about the Claude Code CLI?

If you’re already a Claude Code CLI user, Pemberton works there too. The default install path is the Claude Desktop bundle (.mcpb), but the same skill is exposed in the CLI. The bundle is the easier flow for everyone else.

Questions?

pemberton.support@proton.me — Pemberton support. We read every email.