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> For a complete documentation index, see https://docs.revvue.ai/llms.txt.
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# LanguageRule

GraphQL object

Reference: https://docs.revvue.ai/api-reference/jonna-ai-agent/types/objects/language-rule

## Fields

- `detected` — Detected guest languages this rule matches, as ISO 639-1 codes ('no', 'en', ...). The special entry '*' matches any detected language (use it as the last rule's catch-all). Matching is case-insensitive exact-code matching.
- `replyLanguage` — ISO 639-1 code of the language the agent must reply in when this rule matches.

## Definition

```graphql
type LanguageRule {
  detected: [String!]!
  replyLanguage: String!
}
```