> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ospribrain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Tags & Search

> Tag files for categorization and search across your vault.

## Tags

Tags help you categorize and filter files across your vault.

### Adding Tags

**From the detail panel:**

1. Select a file to open the detail panel
2. Scroll to the Tags section
3. Type a tag name and press Enter
4. Suggested tags appear below for quick adding

**From the context menu:**

1. Right-click a file → available via the context menu options

**Bulk tagging:**

1. Select multiple files with checkboxes
2. Click the **tag icon** in the bulk action bar
3. Enter a tag name — it's applied to all selected files

### Removing Tags

Click the **X** on any tag chip in the detail panel to remove it from that file.

### Tag Filters

In the Vault left sidebar, a **Tags** section shows all tags used in the current vault. Click any tag to filter the view to only show files with that tag.

<Note>
  **Alex's screenshot note:** Take a screenshot of the Vault sidebar showing the Tags section with 3-4 tags listed, and the detail panel on the right showing tags on a selected file.
</Note>

## Searching

### Vault Search

Use the search bar in the Vault header to search files by name. Results update as you type.

### Brain Search

The Brain AI searches vault content semantically — meaning it finds documents based on meaning, not just filename. Ask the Brain a question and it will find relevant vault documents even if the exact words don't match.

Example: Asking *"What are our sample handling procedures?"* will find a document titled "Lab SOP v3.pdf" if it contains sample handling instructions, even though the words don't match exactly.

### AI Summary

Each file has an auto-generated AI summary visible in the detail panel. This summary is what the Brain uses for initial retrieval before diving into the full document content.