# Hallucination

Glossary · Agents

Canonical page: https://datasdk.ai/glossary/hallucination

A hallucination is model-generated content that is unsupported or incorrect.

## Why it matters

Require evidence or an explicit unknown instead of plausible guesses.

## Illustrative example

An agent invents a company revenue figure because the field was missing.

## What to check

Confident wording is not evidence of accuracy.

## How Data SDK fits

Data SDK connects website visits with available company details worldwide, from startups to larger businesses. Coverage and fields vary. Start free trial opens an email request; terms are confirmed with the team. The full API is coming soon.

These are suggested workflows, not a list of built-in integrations. Use your own approved analytics, CRM, and research process where needed. Matches and fields vary. A company match does not identify a person or prove buying intent.

## Related reading

- [Check a generated brief for unsupported claims](https://datasdk.ai/use-cases/check-a-generated-brief-for-unsupported-claims): Plan a verification pass before people rely on the brief.
- [Tool call](https://datasdk.ai/glossary/tool-call): A tool call is an agent's request to another function or service for an action or information.
- [Grounding](https://datasdk.ai/glossary/grounding): Grounding connects a generated answer to evidence the system can inspect.
- [Human review](https://datasdk.ai/glossary/human-review): Human review puts a person in the loop before a result is accepted or acted on.
- [Research brief](https://datasdk.ai/glossary/research-brief): A research brief is a compact explanation of a company and why it may be relevant.
- [Source attribution](https://datasdk.ai/glossary/source-attribution): Source attribution shows where a claim or data point came from.

[Glossary](https://datasdk.ai/glossary) · [Use cases](https://datasdk.ai/use-cases) · [Comparisons](https://datasdk.ai/vs) · [For businesses](https://datasdk.ai/for-businesses) · [For builders](https://datasdk.ai/for-builders)