AI Toolkit

Set up Claude as your second AI assistant

6 minutesLast verified July 2026Free

I

Why it matters

Claude is another AI assistant worth having set up alongside your first one — it tends to handle longer documents well, whether that's an entire reading, a full job posting, or a multi-page draft you want feedback on.

Having two assistants also means you can run the same question through both and compare the answers — a quick way to catch a mistake either one might make alone.

II

Create your account

  1. 1Go to claude.ai and sign up with an email you check regularly.
  2. 2Review its privacy and data-use settings the same way you would for any account handling your writing and questions.
  3. 3Start with a real task you already have — a long reading, a draft, a job posting you're deciding whether to apply to — rather than a generic test question, so you learn its strengths on something that matters.
  4. 4Bookmark it alongside your other AI assistant so reaching for either one is equally easy.
III

Set it up right

  • Paste in a longer document — a full reading, a lengthy job posting, a multi-page draft — and ask it to summarize, question, or find specific things in it; longer context is a genuine strength.
  • Use it for a second opinion on something another assistant already answered — ask the same question to both and compare where they agree and where they diverge.
  • Ask it to be direct with feedback on your writing — what's unclear, what's repetitive, what's missing — rather than only asking it to rewrite.
  • Use it to help plan a longer piece of work, like a project or a study plan, by asking it to break the goal into steps you then adjust yourself.
  • Keep the same privacy habits you'd use with any AI assistant: no sensitive personal data pasted in out of habit.

Running the same important question through two assistants and comparing the answers catches mistakes neither one would catch alone.

IV

Best practices

  • Use it for the tasks where its strengths actually matter — long documents, careful feedback — rather than defaulting to whichever tab is already open.
  • Ask it to explain its own reasoning when an answer surprises you, so you can judge whether the reasoning holds up.
  • Save the cross-check between assistants for anything that actually matters, rather than asking both the same trivial question every time.
  • Review its data and privacy settings on the same schedule you'd review any account that holds your writing.
V

Mistakes to avoid

  • Assuming two different AI assistants will always agree. When they diverge, that's useful information — dig into why rather than picking one at random.
  • Pasting in a full document without checking whether it contains anything sensitive first.
  • Using it only for quick one-line questions and never for the longer tasks it's actually strong at.
  • Skipping the same verification habit you'd use anywhere else — a fluent answer still needs a check against a real source when it matters.

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Set up Claude as your second AI assistant · Knock