# Reference card

> Links, images, PDFs and folders you want your agents to keep in mind.

Source: https://docs.neurosquad.ai/en/cards/reference

A **reference card** is a pinboard of material for your agents: web links, images, PDFs, documents
or a whole folder.

- **Add a link** — paste it and press Enter.
- **Add files** or drop them onto the card; **Reference a folder** to point at a folder instead of
copying it.
- Click an item to **Open** it.

Every agent connected by an [arrow](https://docs.neurosquad.ai/en/canvas/arrows) can see what's on the card and read it when it
needs to — so you don't have to paste the same mockups or specs into every prompt.

**Good for:** design mockups, a product spec, brand guidelines, the documentation of an API.