AI outbound calls: make your first call
Place an AI outbound call with one API request. Learn how AI voice calling works: statuses, webhooks, voicemail, consent, and a reminder call template.
Tutorial · 5 min read · Published
Engineering blog: voice, email, and SMS
Tutorials and guides for developers who place phone calls and send email with an API.
Tag #voice-agent. Show all articles
AI phone agent: how it works and how to build one
An AI phone agent answers and places calls. Learn how AI voice agents work and how to build one.
Guide · 6 min read · Published
Make your first AI phone call with a voice API
Place your first AI phone call with Hail’s voice API. Set a system prompt, confirm recipient consent, and read the call status.
Tutorial · 3 min read · Published
Sender setup guides
Read about US 10DLC registration and email domain warmup. For phone calls, read the voice API page.
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