# VoiceInfra

## Docs

- [Give Your AI Voice Agents Accurate Business Knowledge](https://docs.voiceinfra.ai/docs/agents/knowledge-base.md): Upload documents or crawl your website to give VoiceInfra agents accurate, real-time knowledge. Retrieval under 100ms with AES-256 encryption.
- [Connect Any AI Provider to Your VoiceInfra Voice Agents](https://docs.voiceinfra.ai/docs/agents/multi-llm.md): VoiceInfra supports OpenAI, Anthropic, Google Gemini, Groq, and Mistral. Switch providers anytime, run A/B tests, and cut costs with smart routing.
- [Build Production-Ready AI Voice Agents Without Code](https://docs.voiceinfra.ai/docs/agents/no-code-builder.md): Use VoiceInfra's no-code wizard to create, configure, and deploy production-ready AI voice agents without any coding or prompt engineering.
- [Premium Voice Selection and Multilingual Call Support](https://docs.voiceinfra.ai/docs/agents/voices-languages.md): Choose from 40+ premium AI voices across ElevenLabs, Cartesia, Rime Labs, and Deepgram. Language detection is automatic — no configuration needed.
- [Design AI Voice Conversation Flows With Visual Builder](https://docs.voiceinfra.ai/docs/agents/workflow-builder.md): VoiceInfra's visual workflow builder lets you design multi-step AI conversation flows with drag-and-drop nodes, conditional routing, and live API actions.
- [API Key Authentication for VoiceInfra REST Requests](https://docs.voiceinfra.ai/docs/api/authentication.md): VoiceInfra API uses API keys passed in the X-API-Key header. Generate and manage keys from your dashboard under Settings > API Keys.
- [POST /calls/outbound — Initiate a VoiceInfra AI Call](https://docs.voiceinfra.ai/docs/api/outbound-calls.md): Use POST /calls/outbound to trigger an AI-powered call from VoiceInfra. Pass dynamic context, variables, and custom greetings per call.
- [VoiceInfra REST API Reference — Endpoints and Errors](https://docs.voiceinfra.ai/docs/api/overview.md): The VoiceInfra REST API lets you initiate outbound calls, configure agents dynamically, and receive call data via webhooks. Authenticate with API keys.
- [VoiceInfra Webhooks Reference — Payload and Signatures](https://docs.voiceinfra.ai/docs/api/webhooks-reference.md): VoiceInfra sends POST requests to your endpoint when calls complete. Reference for payload fields, HMAC-SHA256 verification, and delivery behavior.
- [Call Analytics and Conversation Intelligence Dashboard](https://docs.voiceinfra.ai/docs/calls/analytics.md): Track call volumes, agent performance, costs, and customer sentiment in VoiceInfra's real-time analytics dashboard. Export data for reporting.
- [AI Batch Calling Campaigns: Schedule and Launch at Scale](https://docs.voiceinfra.ai/docs/calls/batch-campaigns.md): Run AI calling campaigns to hundreds of contacts from a CSV upload. Schedule calls, inject per-contact variables, and track outcomes from the dashboard.
- [Smart AI Call Transfers: Cold, Warm & Attended Warm](https://docs.voiceinfra.ai/docs/calls/transfer.md): Configure AI-to-human call handoffs in VoiceInfra. Choose cold, warm, or attended warm transfer with context briefing, keypad routing, and CSV import.
- [Automatic Voicemail Detection and IVR Auto-Navigation](https://docs.voiceinfra.ai/docs/calls/voicemail-ivr-detection.md): VoiceInfra automatically detects voicemail on outbound calls and navigates IVR menus so your AI agents reach the right person every time.
- [Register AI Agents as SIP Extensions on Any PBX System](https://docs.voiceinfra.ai/docs/channels/pbx-extensions.md): Connect VoiceInfra AI agents to 3CX, Yeastar, FreePBX, Asterisk, Avaya, or any SIP-capable PBX by registering them as standard SIP extensions.
- [SIP Phone Numbers: Provision, Import, or Use Any Carrier](https://docs.voiceinfra.ai/docs/channels/sip-numbers.md): Provision new SIP numbers in 100+ countries, import from custom SIP trunks, or connect any carrier with VoiceInfra's flexible SIP integration.
- [Import Telnyx Phone Numbers into VoiceInfra in One Click](https://docs.voiceinfra.ai/docs/channels/telnyx.md): Connect your Telnyx account to VoiceInfra using your API v2 key and import existing phone numbers in one click. No porting, no billing changes.
- [Import Twilio Phone Numbers into VoiceInfra in One Click](https://docs.voiceinfra.ai/docs/channels/twilio.md): Connect your Twilio account to VoiceInfra and import existing phone numbers in one click. No number porting, no billing changes, no downtime.
- [Add AI Voice and Chat to Your Website in One Script Tag](https://docs.voiceinfra.ai/docs/channels/website-widget.md): Embed a VoiceInfra AI voice and chat widget on any website with a single script tag. Capture leads, answer questions, and book appointments instantly.
- [Deploy AI Voice and Chat Agents on WhatsApp Business](https://docs.voiceinfra.ai/docs/channels/whatsapp.md): Connect WhatsApp Business API to VoiceInfra and handle voice calls, chat messages, and lead conversations through AI agents on WhatsApp.
- [Connect VoiceInfra to Zapier, Make.com, n8n, and More](https://docs.voiceinfra.ai/docs/integrations/automation-platforms.md): Trigger Zaps, Make scenarios, and n8n workflows from VoiceInfra calls. Connect 5,000+ apps without code using webhooks and the outbound call API.
- [Connect VoiceInfra to Salesforce, HubSpot, and More](https://docs.voiceinfra.ai/docs/integrations/crm.md): Sync VoiceInfra with Salesforce, HubSpot, Pipedrive, and Zoho CRM. Update records, log calls, trigger workflows, and score leads automatically.
- [Define Custom API Functions for Your AI Voice Agents](https://docs.voiceinfra.ai/docs/integrations/custom-functions.md): Connect VoiceInfra agents to any REST API with custom functions. Define endpoints, parameters, and auth headers for real-time data and actions in calls.
- [Give AI Agents Real-Time Tool Access via MCP Servers](https://docs.voiceinfra.ai/docs/integrations/mcp-servers.md): Use Model Context Protocol to connect VoiceInfra agents to any external tool, database, or API. Execute real actions during live calls in real time.
- [VoiceInfra Integrations: Connect Your Entire Tech Stack](https://docs.voiceinfra.ai/docs/integrations/overview.md): VoiceInfra integrates with 100+ tools across CRM, PBX, CCaaS, automation platforms, calendars, and commerce systems. Deploy in under 30 minutes.
- [Receive and Verify Real-Time Call Data via Webhooks](https://docs.voiceinfra.ai/docs/integrations/webhooks.md): Configure VoiceInfra webhooks to receive POST requests with call data when calls complete. HMAC-SHA256 signatures verify every payload.
- [VoiceInfra: AI Voice Agents for Any PBX Phone System](https://docs.voiceinfra.ai/docs/introduction.md): VoiceInfra deploys AI voice agents as SIP extensions on 3CX, Yeastar, FreePBX, and more. Zero hardware changes, 5-minute setup, supports 30+ languages.
- [VoiceInfra Pricing: Transparent Pay-As-You-Go Plans](https://docs.voiceinfra.ai/docs/pricing.md): VoiceInfra charges a platform fee of $0.05/min plus AI model costs at provider rates. Start free with $10 credit — no credit card required.
- [VoiceInfra Quickstart: Your First AI Voice Agent Live](https://docs.voiceinfra.ai/docs/quickstart.md): Create your VoiceInfra account, configure your first AI voice agent, connect a phone number, and take live calls — all in under five minutes.