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Phrase Triggers

Phrase triggers allow users to more explicitly control the behavior of their agents by configuring actions to run only once a bot has spoken a particular phrase. For example, you can configure an agent to transfer a call to a human agent only after the bot has said “I will transfer now”.

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Creating a phrase trigger

You can create a phrase trigger as follows:

from vocode import (
    PhraseBasedActionTrigger,
    PhraseBasedActionTriggerConfig,
    PhraseTrigger,
)

phrase_trigger = PhraseBasedActionTrigger(
    config=PhraseBasedActionTriggerConfig(
        phrase_triggers=[
            PhraseTrigger(
                phrase="I will transfer now",
                conditions=["phrase_condition_type_contains"],
            ),
            PhraseTrigger(
                phrase="You can speak to a human now",
                conditions=["phrase_condition_type_contains"],
            )
        ]
    )
)

In this example, the action that this phrase trigger is attached to will fire only after the bot has spoken a turn that contains “I will transfer now” or “You can speak to a human now”.

"phrase_condition_type_contains" is the only condition type supported at this time, and does not match case, so in the above example, if the bot said “Okay, you can speak to a human now”, the phrase trigger would still fire.

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Configuring your action

from vocode import (
    TransferCallActionParams,
    TransferCallConfig,
)

vocode_client.agents.update_agent(
    actions=[
        TransferCallActionParams(
            type="action_transfer_call",
            config=TransferCallConfig(
                transfer_phone_number="<YOUR TRANSFER PHONE NUMBER>",
            ),
            action_trigger=phrase_trigger # from the previous code block
        )
    ]
)

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[Default] Function Call Triggers

To switch back to the default behavior, use a FunctionCallActionTrigger. These are open ended, meaning the Agent will decide when to use the action based on its prompting. Note that is is primarily achieved via the Prompt but for External Actions, it is also dependent on the description field.

from vocode import FunctionCallActionTrigger

function_trigger = FunctionCallActionTrigger(config={})
vocode_client.agents.update_agent(
    actions=[
        TransferCallActionParams(
            type="action_transfer_call",
            config=TransferCallConfig(
                transfer_phone_number="<YOUR TRANSFER PHONE NUMBER>",
            ),
            action_trigger=function_trigger
        )
    ]
)