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

# Rules

> Link a prompt to Rule Engine rules so it's returned automatically when a rule matches at evaluation time

The prompt detail page has a **Rules** tab, labeled with a badge showing how many rules are already linked. Linking a rule to a prompt means that when the rule matches at evaluation time, the prompt is returned as one of the rule's linked resources.

## Linking a rule

You can link a rule to the current prompt two ways:

* **New Rule** - opens a dialog to create a brand-new rule that's automatically linked to this prompt.
* **Link existing rule** - a toggle that opens a dropdown of rules not yet linked to this prompt (or "All rules already linked" if there are none left to add), plus an **Associate** button to confirm the link.

Each linked rule is listed with its name, description, and status. Clicking a linked rule opens that rule's own detail page. If nothing is linked yet, the tab shows "No rules linked yet."

## Learn more about the Rule Engine

Rules themselves - conditions, matching logic, and what else can be linked besides prompts - are covered in the Rule Engine docs:

<CardGroup cols={2}>
  <Card title="Rule Engine Overview" href="/latest/openlit/prompts-experiments/rule-engine/overview" icon="gavel">
    How rules, conditions, and matching work
  </Card>

  <Card title="Linked Entities" href="/latest/openlit/prompts-experiments/rule-engine/linked-entities" icon="link">
    Everything a rule can return when it matches, prompts included
  </Card>
</CardGroup>

***

<Card title="Manage Prompts" href="/latest/openlit/prompts-experiments/prompt-hub/manage-prompts" icon="file-lines">
  Back to the prompt list, create, and detail pages
</Card>