> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zeroruntime.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Introduction
> Build voice AI agents in Python, JavaScript, or Go. Zero Runtime runs the real-time voice pipeline so you never manage latency, turn-taking, or scale.
**Zero Runtime (ZRT)** lets you build real-time voice AI agents in Python, JavaScript, or Go.
You write the agent code; we run the entire voice infrastructure including speech-to-text, LLM processing, text-to-speech, turn detection, noise cancellation, scaling, and GPUs.
Your code runs in your process, while all real-time voice handling runs on ours.
> **Think serverless for voice AI: you build the agent, we run the runtime.**
## Build
Build voice agents with the Python SDK.
***
## Integration
Connect your agents with communication channels and client applications.
#### Communication
Handle inbound and outbound voice calls.
Engage users through WhatsApp messaging.
#### Client SDKs
Add voice capabilities to web apps.
Build voice-enabled React experiences.
Integrate voice features into mobile apps.
Add voice experiences to iOS apps.
***
## Observe
Monitor, analyze, and troubleshoot agent interactions and performance.
Track agent execution step by step.
Measure usage, performance, and outcomes.
Review detailed agent activity records.
Access and review conversation recordings.
## Deploy
Take your agent from local development to production on Zero Runtime.
Understand how Zero Runtime deploys and scales your agents.
Ship your agent to production step by step.
## Use Cases
Explore production-ready examples and reference implementations to accelerate development.
Nurse-line agent that assesses symptoms and hands off to a specialist.
SaaS inbound SDR agent that qualifies leads BANT-style, scores, and routes them.
Clinic receptionist that books, reschedules, cancels, and sends reminders.
E-commerce agent that resolves FAQs, looks up orders, and files tickets.
Fast-food order taker tuned for low-latency, barge-in-friendly turn-taking.
Compliance-first payment reminder agent that verifies identity and honors stop-contact.
Outbound subscription-renewal call with retention offers and re-engagement.
Text and voice helpdesk that shares one conversation over room pub/sub.
Realtime speech-to-speech Spanish tutor that corrects mistakes and adapts to the learner.
Detects the user's language automatically and provides support in their preferred language.
## Need Help?
Join the community and connect with other developers.
Ask questions, report issues, and contribute feedback.
Book a demo, contact support, or speak with our sales team.