> ## Documentation Index > Fetch the complete documentation index at: https://docs.helloannie.com/llms.txt > Use this file to discover all available pages before exploring further. # Welcome to the Annie API > Build custom agents that answer calls, schedule appointments, handle patient inquiries, and integrate with your existing systems, all without needing to manage the underlying AI infrastructure yourself. Annie API ## What is Annie? Annie is the always-on front desk sidekick for healthcare practices. She answers calls, schedules appointments, handles patient questions, and never takes a day off. Through the Annie API, you can create your own Annies—custom-trained agents tailored to your specific use case, deployed at scale. ## What You Can Build The API gives you full control over every aspect of your agents: * **Custom training** — Teach agents your specific FAQs, workflows, and business logic * **Multi-location deployments** — Spin up agents for hundreds of locations with location-specific knowledge * **Custom Integrations** — Connect Annie to your own PMS integrations * **Automated workflows** — Trigger outbound calls or handle inbound calls for various custom campaigns (e.g. patient follow-ups, appointment reminders, etc.) Whether you're building for a single practice or deploying across an enterprise, the API handles the infrastructure while you focus on the experience. ## Core Concepts Physical locations with addresses, office hours, staff, and timezone information. AI agents that handle conversations. Each bot has its own training and configuration. FAQs, templates, and workflows that define how your agent responds. Every interaction—calls, chats, SMS—captured with full message history and metadata. ## Getting Started The Annie API is invite-only for now. Contact us to request credentials and get set up with a sandbox environment. Set up API keys or OAuth to access the API. Build your first agent in 5 steps. ## Guides Create and configure locations. Set up agents with custom training. FAQs, templates, and workflows. Provision and attach phone numbers. Multi-location and enterprise patterns. ## API Reference Full documentation for all endpoints. ## Need Access? Email [devs@helloannie.com](mailto:devs@helloannie.com) to get API credentials and start building.