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An @-mention is the fastest way to point Chief at one specific thing — a file, a Label, a Collection, or a Concept — without opening the Library picker. You stay on the keyboard, type a few letters, and the item drops into your prompt.

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Add an @-mention

Chief: @-mention — the picker grouped by Assets, Labels, Collections, and Concepts
  1. Click into the prompt bar and type @. A picker opens for adding knowledge to your scope.
  2. Keep typing to narrow the list. Before you type a search, items you use often may appear first under Frequently used. The remaining populated groups are Chats, Live Sessions, Assets, Spreadsheets, Labels, Collections, Concepts, connected integrations, Agents, Skills, and Expert Voices.
  3. Click the item you want (or use the arrow keys and press Enter). It is inserted into your prompt as an inline chip.
  4. Finish typing your prompt around the chip, then send. If the Files chip covers your whole Library, mentioning one or more files limits this prompt to those files and any other items you mention. Your next prompt returns to the scope shown by the Files chip.
Tip: Mention a Label or Collection to bring in a whole group of files at once — handy when you want “everything tagged Q3” without selecting each file.

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What you can @-mention

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@-mention vs. the Files chip

Both feed the same answer. An @-mention lives inline in your prompt, while the Files chip sets standing scope for the task. If the chip covers your whole Library, a file mention replaces that whole-Library search for this prompt only; the chip stays on the Library, and your next prompt returns to it. If the chip already contains a specific selection, a file mention merges into that selection. Mentioned Labels, Collections, and Concepts join the standing scope.

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FAQ

If you keep typing and see no matches, the item may not be in this Project, or it may still be processing after upload. Check your spelling, or upload the file first, then mention it.
Place your cursor just after the inline chip in the prompt and delete it like any other character. Removing the chip takes that item back out of the prompt’s knowledge.
The mention resolves the Label’s files when you send. Add the Label again in a later prompt, or keep it selected through the Files chip, to pick up newly tagged files.