Tools

Tools extend what your voice agent can do beyond conversation. They allow the agent to perform real actions during a call — transfer calls, book appointments, or fetch data from external systems.

Access tools via the Tools tab in your agent settings.

All Plans

All tools are available on every plan, including Free. There are no tool restrictions by plan.

Available Tools

Tool	Purpose	When to Use
Call Forwarding	Transfer to a human operator	Customer asks for a person, complex issues
Book Appointment	Schedule via Cal.com	Customer wants to book a meeting
API Tool RAG	Fetch real-time data from APIs	Need live information (stock, orders, etc.)

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Call Forwarding

Transfer calls to a human when specific conditions are met.

Configuration

Setting	Description	Example
Name	Person or department name	"Sales Manager"
Forwarding Number	Phone number to transfer to	+49 123 456 789
Global Condition	When the agent should transfer	"Customer asks for manager or the issue cannot be resolved"

How It Works

1. During a conversation, the AI evaluates the Global Condition
2. When the condition is met, the agent informs the caller about the transfer
3. The call is forwarded to the specified number
4. If the human doesn't answer, the call returns to the agent

Best Practices

• Define clear, specific conditions — vague conditions lead to unnecessary transfers
• Always inform the caller before transferring
• Set up multiple forwarding rules for different departments
• Include a fallback message if the transfer fails

tip

You can add multiple Call Forwarding tools for different departments. For example, one for "Sales" and another for "Technical Support" with different conditions and numbers.

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Book Appointment (Cal.com)

Schedule appointments using Cal.com calendar integration. Available on all plans including Free.

Configuration

Setting	Description
Name	Scheduler name (e.g., "Meeting Booking")
General Condition	When to offer booking (e.g., "Customer wants to schedule a meeting")
API Key	Your Cal.com API key
Event ID	Cal.com event type identifier
Book an appointment	Toggle: if disabled, only checks availability without booking
Confirmation	No confirmation / SMS confirmation

Setup Steps

1. Create a Cal.com account
2. Generate an API key in Cal.com settings
3. Create an event type and copy its Event ID
4. Add the "Book Appointment" tool in your agent
5. Paste the API key and Event ID
6. Set the trigger condition

How It Works

1. The caller expresses interest in booking
2. The agent checks available time slots via Cal.com API
3. The agent presents available options to the caller
4. The caller chooses a time
5. The appointment is booked (if enabled)
6. Optional: SMS confirmation is sent

tip

If you set Book an appointment to off, the agent will only check availability and tell the caller available slots — without actually creating the booking. This is useful for "check availability" scenarios.

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API Tool RAG

Connect to external APIs to fetch real-time information during calls. This enables your agent to look up orders, check inventory, verify account status, or access any data available via API.

Configuration

Setting	Description
Name	Tool name (e.g., "Order Lookup")
General Condition	When to query the API (e.g., "Customer asks about order status")
Execution Message	What the agent says while waiting (e.g., "Let me check that for you...")
API Endpoint URL	The external API endpoint
Method	GET, POST, PUT, DELETE
Headers	Request headers (e.g., Authorization)
Body	Request body (for POST/PUT)
Request Timeout	Maximum wait time in seconds

How It Works

1. The condition is triggered during conversation
2. The agent says the Execution Message to keep the caller engaged
3. An API request is sent to the specified endpoint
4. The response data is fed back to the AI
5. The agent uses the data to answer the caller's question

Example: Order Status Lookup

Name: Order Status Check
Condition: Customer provides an order number or asks about order status
Execution Message: Let me look up your order, one moment please...
Endpoint: https://api.yourshop.com/orders/{order_id}
Method: GET
Headers: Authorization: Bearer YOUR_API_KEY

Best Practices

• Always set an Execution Message — silence during API calls feels broken
• Set reasonable timeouts (5-10 seconds)
• Handle API errors gracefully in your prompt
• Use HTTPS endpoints only
• Don't expose sensitive API keys in the response

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Adding a Tool

1. Navigate to your agent's Tools tab
2. Click the Add Tool dropdown
3. Select the tool type
4. Fill in the configuration
5. Save — changes are applied immediately

Managing Tools

• Tools are listed in the Tools tab
• Click on a tool to edit its settings
• Use the delete button to remove a tool
• Tools can be temporarily disabled without deleting

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Related

• Voice Agents Overview
• Actions — Post-call actions (email, SMS, API calls)
• Prompt Engineering — Reference tools in your prompt