List Agents

Authentication header containing API key (find it in dashboard). The format is "Bearer YOUR_API_KEY"

Unique id of agent.

The response engine to use for the agent.

The name of the agent. Only used for your own reference.

Unique voice id used for the agent. Find list of available voices and their preview in Dashboard.

Optionally set the voice model used for the selected voice. Currently only elevenlab voices have voice model selections. Set to null to remove voice model selection, and default ones will apply. Check out the dashboard for details on each voice model.

When TTS provider for the selected voice is experiencing outages, we would use fallback voices listed here for the agent. Voice id and the fallback voice ids must be from different TTS providers. The system would go through the list in order, if the first one in the list is also having outage, it would use the next one. Set to null to remove voice fallback for the agent.

Controls how stable the voice is. Value ranging from [0,2]. Lower value means more stable, and higher value means more variant speech generation. Currently this setting only applies to 11labs voices. If unset, default value 1 will apply.

Controls speed of voice. Value ranging from [0.5,2]. Lower value means slower speech, while higher value means faster speech rate. If unset, default value 1 will apply.

If set, will control the volume of the agent. Value ranging from [0,2]. Lower value means quieter agent speech, while higher value means louder agent speech. If unset, default value 1 will apply.

Controls how responsive is the agent. Value ranging from [0,1]. Lower value means less responsive agent (wait more, respond slower), while higher value means faster exchanges (respond when it can). If unset, default value 1 will apply.

Controls how sensitive the agent is to user interruptions. Value ranging from [0,1]. Lower value means it will take longer / more words for user to interrupt agent, while higher value means it's easier for user to interrupt agent. If unset, default value 1 will apply. When this is set to 0, agent would never be interrupted.

Controls whether the agent would backchannel (agent interjects the speaker with phrases like "yeah", "uh-huh" to signify interest and engagement). Backchannel when enabled tends to show up more in longer user utterances. If not set, agent will not backchannel.

Only applicable when enable_backchannel is true. Controls how often the agent would backchannel when a backchannel is possible. Value ranging from [0,1]. Lower value means less frequent backchannel, while higher value means more frequent backchannel. If unset, default value 0.8 will apply.

Only applicable when enable_backchannel is true. A list of words that the agent would use as backchannel. If not set, default backchannel words will apply. Check out backchannel default words for more details. Note that certain voices do not work too well with certain words, so it's recommended to expeirment before adding any words.

If set (in milliseconds), will trigger a reminder to the agent to speak if the user has been silent for the specified duration after some agent speech. Must be a positive number. If unset, default value of 10000 ms (10 s) will apply.

If set, controls how many times agent would remind user when user is unresponsive. Must be a non negative integer. If unset, default value of 1 will apply (remind once). Set to 0 to disable agent from reminding.

If set, will add ambient environment sound to the call to make experience more realistic. Currently supports the following options:

• coffee-shop: Coffee shop ambience with people chatting in background. Listen to Ambience

• convention-hall: Convention hall ambience, with some echo and people chatting in background. Listen to Ambience

• summer-outdoor: Summer outdoor ambience with cicada chirping. Listen to Ambience

• mountain-outdoor: Mountain outdoor ambience with birds singing. Listen to Ambience

• static-noise: Constant static noise. Listen to Ambience

• call-center: Call center work noise. Listen to Ambience

Set to null to remove ambient sound from this agent.

If set, will control the volume of the ambient sound. Value ranging from [0,2]. Lower value means quieter ambient sound, while higher value means louder ambient sound. If unset, default value 1 will apply.

Specifies what language (and dialect) the speech recognition will operate in. For instance, selecting en-GB optimizes speech recognition for British English. If unset, will use default value en-US. Select multi for multilingual support, currently this supports Spanish and English.

The webhook for agent to listen to call events. See what events it would get at webhook doc. If set, will binds webhook events for this agent to the specified url, and will ignore the account level webhook for this agent. Set to null to remove webhook url from this agent.

Provide a customized list of keywords to bias the transcriber model, so that these words are more likely to get transcribed. Commonly used for names, brands, street, etc.

If set to true, will format transcription to number, date, email, etc. If set to false, will return transcripts in raw words. If not set, default value of true will apply.

Whether this agent opts out of sensitive data storage like transcript, recording, logging, inbound/outbound phone numbers, etc. These data can still be accessed securely via webhooks. If not set, default value of false will apply.

A list of words / phrases and their pronunciation to be used to guide the audio synthesize for consistent pronunciation. Currently only supported for English & 11labs voices. Set to null to remove pronunciation dictionary from this agent.

If set to true, will normalize the some part of text (number, currency, date, etc) to spoken to its spoken form for more consistent speech synthesis (sometimes the voice synthesize system itself might read these wrong with the raw text). For example, it will convert "Call my number 2137112342 on Jul 5th, 2024 for the $24.12 payment" to "Call my number two one three seven one one two three four two on july fifth, twenty twenty four for the twenty four dollars twelve cents payment" before starting audio generation.

If users stay silent for a period after agent speech, end the call. The minimum value allowed is 10,000 ms (10 s). By default, this is set to 600000 (10 min).

Maximum allowed length for the call, will force end the call if reached. The minimum value allowed is 60,000 ms (1 min), and maximum value allowed is 7,200,000 (2 hours). By default, this is set to 3,600,000 (1 hour).

If set to true, will detect whether the call enters a voicemail. Note that this feature is only available for phone calls.

The message to be played when the call enters a voicemail. Note that this feature is only available for phone calls. If you want to hangup after hitting voicemail, set this to empty string.

Configures when to stop running voicemail detection, as it becomes unlikely to hit voicemail after a couple minutes, and keep running it will only have negative impact. The minimum value allowed is 5,000 ms (5 s), and maximum value allowed is 180,000 (3 minutes). By default, this is set to 30,000 (30 s).

Post call analysis data to extract from the call. This data will augment the pre-defined variables extracted in the call analysis. This will be available after the call ends.

If set, will delay the first message by the specified amount of milliseconds, so that it gives user more time to prepare to take the call. Valid range is [0, 5000]. If not set or set to 0, agent will speak immediately. Only applicable when agent speaks first.

Last modification timestamp (milliseconds since epoch). Either the time of last update or creation if no updates available.