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The quality of what chat gives back depends on what it’s allowed to look at. Three things are always used. Five more are switched on by default and yours to turn off.

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Always used — you don’t need to ask

Three things are applied to every request automatically:

Your brand

Positioning, offer, audience, product context, and proof from your brand profile.

Your voice

Your brand voice and writing style.

Your performance

Which hooks, topics, formats, and CTAs have actually worked for you.
You don’t have to say “use my brand voice” — it’s already on. Asking for it does no harm, but it isn’t what makes the difference. If output doesn’t sound like you, the fix is in your brand voice settings, not in the prompt.

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The five you control

Open Use context from below the message box — the icon to the right of +. You’ll see five toggles:
The Use context from menu open, showing toggles for Viral Posts, Bookmarks, Past Posts, Content Library, and Web Search, all switched on
All five start switched on. You’re not opting in — you’re narrowing down. If output is drifting somewhere you didn’t intend, the fix is usually turning something off.

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Thinking or Fast

Next to the source picker is an Effort control — a brain icon for Thinking, a bolt for Fast. It decides whether Depost AI searches those sources at all.
The Effort menu open below the message box, with Thinking selected and Fast beneath it
Thinking is the default, and the composer icon tells you which one is on without opening the menu. The control is on the new-chat screen too, so you can set it before your first message. The important part is that Fast doesn’t read less — it reads nothing. Every source you picked above is ignored for that turn, and the answer comes from general knowledge instead of your material.
A Fast answer can still read like a confident, well-sourced one. It isn’t. If it matters whether a claim came from your own posts or performance, stay on Thinking — or check the Sources chip before you use it.
Fast buys seconds, not minutes. It’s worth it for throwaway questions and rephrasing, and rarely worth it for anything you’re going to publish.

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Narrowing down

More context is not automatically better. Each source pulls the output in its direction, so turn off the ones that don’t match what you’re asking for.
Keep Past Posts — that’s the material being analyzed. Turn off Viral Posts unless you want the analysis to compare you against what’s working elsewhere.
Leave most of it on. Past Posts stops it repeating you, Bookmarks and Viral Posts add range. Keep Web Search on if you want ideas tied to something happening now, off if you want evergreen ones.
Content Library is the one that matters — it’s what stops the draft being generic. Turning off Viral Posts here often helps, since it stops the draft drifting toward a format that isn’t yours.
Turn most of them off. The draft is the input, and your voice and performance are applied regardless. Extra sources tend to pull the rewrite away from what you wrote.
Keep Web Search on. Without it, Depost AI works from your material and its own knowledge, so recent numbers, prices, and events won’t be reliable.

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Checking what it actually used

When Depost AI has grounded an answer, a Sources chip appears with it, carrying a count. Open it and you get the real material it read, grouped by where each piece came from:
The Sources panel, headed What was retrieved for this answer, with tabs for Viral Posts and Your Posts and a card per source showing the post, its reactions and comments, and a link to the original
It opens headed What was retrieved for this answer, with a tab and a count per source type. Each card shows the author and their headline, the post itself, how it performed, and how long ago it was published, plus a link out to the original.
Author names and photos are blurred in this screenshot. They’re real LinkedIn creators, and the panel is being shown here to explain the layout rather than to point at anyone.
This is the fastest way to answer three questions: whether a claim is actually backed by something, why the output leaned the way it did, and whether a source you were counting on turned out to be empty.
No Sources chip usually means nothing was retrieved — either you were on Fast, or the sources you left on had nothing matching your request. Both are worth knowing before you publish what came back.

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Where context comes from

Each source is only as good as what’s behind it. If a source is switched on but empty, it contributes nothing:
  • Past Posts fills up as you publish through Depost AI and as your LinkedIn history syncs
  • Bookmarks is what you’ve saved — see Inspiration
  • Viral Posts is maintained for you; nothing to set up
  • Content Library is what you’ve uploaded — see Library
  • Web Search needs nothing
If an answer feels thin, check whether the source it should have drawn on actually has anything in it yet. A source can be switched on and still contribute nothing. A new workspace with an empty library gets generic output for the same reason a new notebook does.

How chat works

Starting a chat and what you can ask for.

Attachments and voice input

Bring a specific file into one request.

Library

Upload the documents that Content Library draws on.

Inspiration

Build the bookmarks and creator list behind your saved examples.