Customer Service Agent with Function Calling

A voice agent that handles customer service inquiries including order status checks, appointment scheduling, customer information lookup, and conversation management through natural language. Demonstrates production-ready function calling patterns with artificial delays to simulate real-world database operations.

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The numbers

latency—

cost / min—

frameworkCustom

The stack

telephonyWeb Only

speech-to-textDeepgram Nova-3

llmGPT-4o

text-to-speechDeepgram Aura-2

System prompt

No prompt published.

Config

config.json

{
  "functions": [
    "customer_lookup",
    "order_history",
    "appointment_scheduling",
    "end_call"
  ],
  "function_calling": true,
  "mock_data_system": true,
  "agent_filler_messages": true,
  "artificial_delay_enabled": true,
  "audio_completion_handling": true
}

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