Dynamic Outbound Call API

Initiate outbound calls programmatically with full control. Customize payloads, target recipients, and manage flows via REST API.

Access your AI assistant via API to programmatically initiate outbound calls with dynamic payload customization. Leverage all configured settings while maintaining complete control over call parameters, recipient targeting, and conversation flow through our RESTful API interface.

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Key Highlights

What Makes This Feature Special

Discover the powerful capabilities that drive real business results

Programmatic Call Control

Initiate outbound calls programmatically using REST API with complete control over caller/callee numbers, assistant configuration, and conversation parameters. Perfect for automated workflows and system integrations.

Dynamic Payload Customization

Customize every aspect of your call dynamically - from system messages and voice settings to function integrations and compliance configurations. One API endpoint, infinite possibilities.

Real-Time Assistant Configuration

Override any assistant setting on-the-fly including LLM providers, voice synthesis, knowledge bases, and function calling. No need to create multiple assistants for different scenarios.

Enterprise Integration Ready

Built for enterprise workflows with API key authentication, comprehensive error handling, and detailed response data. Integrate with CRM systems, automation platforms, and custom applications.

How It Works

Get started with this feature in a few simple steps

Everything you need to transform your voice operations from start to finish

Outbound Call API Reference
Step 01

API Reference Built Into Your Assistant

Each assistant has a dedicated API tab showing the exact endpoint, required parameters, and a live request body example. Pass agent_id, destination number, optional context, a custom first message, and dynamic variables, all documented inline so you can start integrating without leaving the dashboard.

  • Endpoint and parameters documented per assistant
  • Required: agent_id, phone number, destination number
  • Optional: first message, context, dynamic variables
  • Live request body example ready to copy
API Key Management
Step 02

Generate & Manage API Keys

Create API keys from the API Keys dashboard to authenticate your outbound call requests. Each key is shown once on creation, copy it immediately. Manage multiple keys for different integrations and revoke access anytime.

  • Create API keys in one click
  • Key shown once, copy on creation
  • Manage multiple keys per workspace
  • Revoke access anytime
Endless Possibilities
Scale your voice operations without limits
Benefits

Transform Your Business

Discover the measurable impact and advantages that drive real business growth

Programmatically initiate calls from any system or application

Dynamically customize assistant behavior per call without creating multiple configurations

Integrate with existing CRM, automation, and workflow systems

Scale outbound communication through API automation

Maintain consistent assistant quality while enabling dynamic customization

Enterprise-grade authentication and error handling for production deployments

Solutions

Industry Solutions

Discover how this feature powers tailored solutions across industries

AI Sales Automation 24/7 Lead Qualification & Outreach

Build a Voice AI agent for your sales team. Handle lead qualification, outreach campaigns, and appointment setting around the clock.

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AI Recruitment & Staffing Automation 24/7 Screening, Matching & Outreach

Build a Voice AI agent for your recruitment firm. Handle candidate screening, matching, and outreach campaigns around the clock.

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AI Insurance Automation 24/7 Lead Gen, Claims & Sales

Build a Voice AI agent for your insurance business. Handle lead generation, claims processing, and sales around the clock.

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Customer Success

See How Our Customers Use This

Real businesses getting real results with this feature. Read their stories.

How a UAE Business Advisory Firm Automated Lead Follow-Up with AI Voice Agents

A UAE-based company formation and business advisory firm deployed multiple VoiceInfra AI agents to call social media leads instantly, with Zoho CRM integration triggering calls and updating lead records automatically

Read Success Story

How a Spanish Telecom Operator Runs 500+ Daily Outbound AI Calls on Yeastar with 5 Languages

A CNMC-registered Spanish telecom operator deployed 10 VoiceInfra AI agents on Yeastar PBX, running 500+ outbound calls daily with 30%+ transfer rate across Spanish, Arabic, English, French, and Portuguese

Read Success Story
Technical Excellence

Technical Specifications

Enterprise-grade infrastructure built for reliability and scale

REST API

Standard HTTP endpoints

Dynamic Config

Per-call customization

API Key Auth

Secure authentication

Instant Calls

Real-time call initiation

FAQ

Frequently Asked Questions

Find answers to common questions about this feature

Include your API key in the request header as 'X-API-Key: YOUR_API_KEY_HERE'. Generate API keys in your dashboard's API Keys section with appropriate permissions for outbound calling.

Yes! You can dynamically override any assistant setting including LLM provider, voice configuration, system messages, knowledge bases, and function integrations. This allows infinite customization without creating multiple assistant configurations.

All phone numbers must be in E.164 format (e.g., +1234567890). The caller number must be registered in your Phone Numbers section on the platform before use.

The API returns detailed error responses with specific error codes and messages. Common errors include missing required fields (422), insufficient credits, or invalid phone numbers. Implement proper error handling in your integration.

Yes! The API returns call session information including call_id and status. Use this data to track call outcomes through our analytics API or dashboard for comprehensive campaign monitoring.
Platform Features

Continue Exploring VoiceInfra

Discover more ways VoiceInfra can transform your voice AI experience

Knowledge Base

Stop feeding your AI outdated information. Our Knowledge Base lets you upload company documents, crawl entire websites, or paste custom text then instantly connect it to any AI agent. No retraining, no hardcoding, no hallucinations. Just accurate, real-time answers that scale with your business. Upload product manuals, FAQ documents, pricing sheets, or website content. The AI automatically references this information during conversations pulling exact details in under 100ms.

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IVR Detection Auto Navigation

Stop wasting time listening to automated phone menus. With IVR Detection enabled, your agent listens for keypad prompts and presses the right buttons automatically based on your instructions. It navigates complex menu structures on outbound calls to reach live agents or specific departments without manual dialing.

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VoiceInfra Phone Numbers

Provision a new US phone number (+1) directly from VoiceInfra. No external providers, no complex setup. Pay $1.50/month plus per-minute rates. Numbers are ready for AI agent assignment within minutes. Need a different country or area code? Contact us at hello@voiceinfra.ai.

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