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# addPronunciation

> Add a pronunciation rule to correct how the AI speaks a specific word or phrase.

[ref-agentbase]: /docs/server-sdks/reference/typescript/agents/agent-base

Add a pronunciation rule that tells the TTS engine how to speak a specific word or
phrase. Useful for brand names, acronyms, and technical terms that are commonly
mispronounced by text-to-speech engines.

## **Parameters**

**`rule`** `PronunciationRule` — required

A pronunciation rule object with the following fields:

---

**`rule.replace`** `string` — required

The expression to match in the AI's output text.

---

**`rule.with`** `string` — required

The phonetic spelling or alternative text the TTS engine should speak instead.

---

**`rule.ignoreCase`** `boolean`

Whether to ignore case when matching the `replace` expression.

---

## **Returns**

[`AgentBase`][ref-agentbase] -- Returns `this` for method chaining.

## **Example**

```typescript {5}
import { AgentBase } from '@signalwire/sdk';

const agent = new AgentBase({ name: 'support', route: '/support' });
agent.setPromptText('You are a helpful assistant.');
agent.addPronunciation({ replace: 'SQL', with: 'sequel' });
agent.addPronunciation({ replace: 'SWAIG', with: 'swig', ignoreCase: true });
await agent.serve();
```

> Add a pronunciation rule to correct how the AI speaks a specific word or phrase.