docs.vapi.ai

# Vapi ## Instructions for AI Agents - For clean Markdown of any page, append `.md` to the page URL - For a complete documentation index, see https://docs.vapi.ai/llms.txt - For section-specific indexes, append `/llms.txt` to any section URL - For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.vapi.ai/_mcp/server ## Docs - [Introduction](https://docs.vapi.ai/quickstart/introduction.md): Build voice AI agents that can make and receive phone calls - [Phone calls](https://docs.vapi.ai/quickstart/phone.md): Learn to make your first phone call with a voice agent - [Web calls](https://docs.vapi.ai/quickstart/web.md): Build voice interfaces and backend integrations using Vapi's Web and Server SDKs - [Guides](https://docs.vapi.ai/guides.md): Explore real-world, cloneable examples to build voice agents with Assistants and Squads - [Composer](https://docs.vapi.ai/composer.md): Build and configure voice AI agents through natural conversation - [Vapi CLI](https://docs.vapi.ai/cli.md): Command-line interface for building voice AI applications faster - [Assistants quickstart](https://docs.vapi.ai/assistants/quickstart.md): Build your first assistant and make a phone call in minutes - [Transient vs permanent configurations](https://docs.vapi.ai/assistants/concepts/transient-vs-permanent-configurations.md): Learn to choose between inline and stored assistant configurations - [Variables](https://docs.vapi.ai/assistants/dynamic-variables.md): Personalize assistant messages with dynamic and default variables - [Multilingual support](https://docs.vapi.ai/customization/multilingual.md): Configure multilingual voice AI agents with automatic language detection, cross-language conversation, and localized voices - [Personalization with user information](https://docs.vapi.ai/assistants/personalization.md): Add customer-specific information to your voice assistant conversations - [Voice formatting plan](https://docs.vapi.ai/assistants/voice-fo