> For the complete documentation index, see [llms.txt](https://docs.chachat.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chachat.app/calls.md).
# Calls
Experience a whole new level of interaction with your favorite AI characters — **not just through text, but with real voice conversations**.
**What you can do:**
* 📞 **Call any AI character** — anytime, 24/7
* 🗣️ **Speak naturally** — just talk, and the AI responds in real time
* 💬 **Read live subtitles during the call** — for extra clarity and convenience
* 💞 **Feel more connected** — voice makes the interaction more immersive and emotional
> **ChaChat Calls** feel like talking to a character from a movie or book — brought to life just for you.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## 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, and the optional `goal` query parameter:
```
GET https://docs.chachat.app/calls.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
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.