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

# Grounding & citations

> Which parts of an answer are backed by evidence, and where the evidence came from.

An answer without evidence is a claim. An answer with citations is a verifiable claim. The Trace shows both — where the evidence came from and how much of the answer is actually grounded in it.

## Citation view

Every citation in the answer is a superscript number that hovers a preview:

* Source (document title, memory space name, or "graph fact").
* Exact quoted passage.
* Score (relevance in this retrieval).
* Click to jump to the source in a side panel.

If your Agent is configured to always cite, you can enforce this — see [Grounding](/build/retrieval/grounding).

## Grounded vs. ungrounded regions

The Trace highlights the answer with two colors:

* **Green** — this sentence is backed by a retrieved chunk or graph fact.
* **Gray** — this sentence has no direct citation. Could be a bridging sentence, or could be a hallucination.

Fully-ungrounded answers get a warning banner. Not automatically bad — some questions genuinely need reasoning outside the retrieved context — but worth spot-checking.

## Citation faithfulness

For each cited region, the Trace also shows a **faithfulness score** — does the cited chunk actually say what the Agent claims it says? Computed by a small verifier model.

Scores:

* **1.0** — perfect match.
* **0.7-1.0** — supported (paraphrased but consistent).
* **0.4-0.7** — partial support (parts of the claim are in the source, parts aren't).
* **\< 0.4** — misquote or overreach.

Low faithfulness scores are the strongest signal of a subtle hallucination — the Agent read a real source but drew a stronger conclusion than the source supports.

## Verified vs. unverified claims

Separate from citations, if the Agent has a causal graph attached, the answer's factual claims are checked against the graph:

* **Verified** — the graph confirms.
* **Contradicted** — the graph disagrees.
* **Unchecked** — no matching variable or edge in the graph.

Shown next to each factual claim. See [Verify agent answers](/build/causal-graph/verification).

## Missing citations

If the Agent stated a fact but didn't cite it — and retrieval had a relevant chunk it could have cited — the Trace flags it: "Missing citation: 'Refund policy is 30 days' — matching chunk: `policy-2026.pdf#refunds`."

Turn into a Signal to improve future prompts.

## Citation formats

The default format is superscript numbers. Configurable per Agent to:

* Inline URLs.
* Footnote-style at end of answer.
* Structured (JSON) — for programmatic consumers.

Pick a format that matches how your users consume the answer.

## Debugging "why isn't this cited"

If you know a source has the answer but the Agent didn't cite it, work back through the trace:

1. Did retrieval return this source? See [Diagnostics](/build/retrieval/diagnostics).
2. Did it rank high enough to be in the top-K?
3. Did the Agent decide it was relevant enough to cite?

The Trace shows each stage so you can locate the specific point where the source dropped out.