# Ground an LLM answer in real citations

**Outcome:** answers in your product where every claim links to a source the user can open and check.

## Approach

Use SciSpace for retrieval and grounding rather than asking a general model to remember the
literature. The Citation object is what your UI renders.

## Walkthrough

1. Create a chat scoped to the documents or papers in play
2. Send the question with `stream: true`
3. Render `message.delta` as it arrives; on `citation.added`, attach a marker
4. Link each marker to the source, with the quote in a tooltip

## Handling the hard parts

- **Unsourced claims.** `source.type: "model"` means no retrieved evidence. Show it differently, or drop the sentence — do not present it as sourced.
- **Quote fidelity.** Render `quote` verbatim. Never paraphrase inside a quotation mark.
- **Marker mapping.** Match `[n]` in the text to `citations[].index`. Do not renumber.
- **Dead links.** Papers without an accessible PDF have no `locations`. Fall back to the paper page.

## Related

citation · answer · chats · citation-highlights