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Quick Overview

Lindy Phone Calls enables AI-powered voice automation for both inbound and outbound calls. Build agents that can handle customer support, sales outreach, appointment booking, and more — all with natural conversation abilities. Key capabilities:
  • Inbound & outbound - Receive calls with triggers, make calls with actions
  • 30+ languages - Support for global communication
  • Natural voices - Human-like conversation flow
  • Call transfers - Route to humans or other agents
  • Concurrent calls - Handle multiple calls simultaneously
  • 100+ countries - Global reach with competitive pricing
Want to learn more about how to use Lindy Phone or see example prompts? Check out our Lindy Phone guide for detailed setup instructions and practical examples.
Phone calls are available on Pro, Business, and Enterprise plans. Pro plans are limited to 30 calls/month, English only, and one call at a time. Business and Enterprise plans offer unlimited concurrent calls and support all languages.

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Types of Voice Agents

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Inbound Call Handling

Uses the “Call Received” trigger to answer incoming calls automatically. Best for:
  • Customer support automation
  • Booking and scheduling
  • Lead qualification
  • After-hours answering
Available actions:
  • End call
  • Transfer call
  • Press numbers (phone tree navigation)

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Outbound Call Campaigns

Uses the “Make Phone Call” action to initiate calls. Best for:
  • Sales outreach
  • Appointment reminders
  • Survey collection
  • Follow-up campaigns
We recommend using Gemini Flash for simple phone actions or simple phone calls, and Claude Sonnet for more advanced phone behavior. These recommendations may change as new models emerge.

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Setting Up Phone Numbers

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Purchasing a Number

IMAGE NEEDED: Screenshot of Phone number dropdown showing available numbers to purchase
  1. Add a Call Received trigger or Make Phone Call action
  2. Click the “Phone number from” field
  3. Select from available numbers or search for specific area codes
  4. Each number costs $10/month

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Managing Phone Numbers

Access your numbers through Settings:
  1. Click your user icon
  2. Select Settings
  3. Navigate to Phone Numbers
  4. Options: Disconnect or Release numbers

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Language Configuration

Lindy supports over 30 languages for natural conversation: Popular languages:
  • English, Spanish, French, German
  • Chinese (Mandarin/Cantonese)
  • Japanese, Korean
  • Hindi, Arabic
  • And 25+ more
To configure:
  1. Open your phone trigger or action
  2. Find the “Language” dropdown
  3. Select your desired language

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Call Transfer

Enable your agents to transfer calls to humans or other departments when needed.

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As a Workflow Step

IMAGE NEEDED: Screenshot showing Transfer Call action being added after Call Received trigger
  1. Select Lindy Phone → Transfer Call
  2. Set “To” field to destination number

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As an Agent Skill

IMAGE NEEDED: Screenshot of AI Agent with Transfer Call added as a skill
Add transfer capability to AI agents:
  1. In your agent prompt, include transfer instructions: 
    If the customer asks for a human or you determine transfer is needed, 
transfer to: +1-555-0123
  2. Add Transfer Call as an agent skill
  3. Agent will intelligently decide when to transfer
Add conditions before transfers to route calls based on area code, time of day, or conversation content.

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Pricing Structure

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Phone Number Costs

  • $10/month per number
  • Supports concurrent calls
  • Available in 100+ countries

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Per-Minute Rates

Standard US configuration: 20 credits/minute (approximately $0.19/min)
Forwarded calls stop charging for LLM usage once connected to a human.

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Best Practices

  • Test thoroughly - Always test with real calls before going live
  • Clear prompts - Provide specific instructions for conversation flow
  • Fallback options - Include transfer options for complex requests
  • Monitor performance - Review call logs and adjust prompts
  • Set expectations - Let callers know they’re speaking with AI when appropriate

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Next Steps

Enhance your phone agents with these advanced features:

Lindy Phone Guide

Detailed examples and advanced phone setup

Conditions

Route calls based on caller data or time

Agent Steps

Build complex conversational flows

Voice Support

Build AI-powered customer support phone agents