# Lexical stress and intonation

{% hint style="info" %} <mark style="color:blue;">**This feature is available as part of the Pro Plan.**</mark>
{% endhint %}

The Speechace API also provides a way to measure lexical stress and intonation in a user's pronunciation of a word or sentence. In teaching pronunciation, lexical stress involves emphasizing certain syllables in words to clarify meaning, while intonation refers to pitch variations that convey emotional tone and intent. Please utilize the [Score Text/Stress & Intonation](/api-reference/score-text-stress-and-intonation.md) function to obtain stress and intonation quality scores.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://api-docs.speechace.com/features/scripted-activities/lexical-stress-and-intonation.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.