Update an agent
Authorization
AuthorizationheaderrequiredBearer YOUR_API_KEY. Create a key in the dashboard.
Path parameters
agentIdstringrequiredAgent ID.
Body
application/json
namestringLimitsmax length 100enabledbooleanproviderstringLLM provider for the AI agent.
One ofopenaianthropicgooglemistralzavumodelstringsystemPromptstringLimitsmax length 10000apiKeystringAPI key for the LLM provider, stored and attached to the agent. Send it with
providerwhen the agent does not already hold a key for that provider: an update that would leave the agent on a key for a different provider is refused with400 invalid_request, and one that leaves it with no key at all is refused too. Moving tozavuneeds no key.contextWindowMessagesintegerLimitsmin 1 · max 50includeContactMetadatabooleanmaxTokensintegerLimitsmin 1 · max 4096temperaturenumberLimitsmin 0 · max 2triggerOnChannelsstring[]triggerOnMessageTypesstring[]voiceobjectVoice Agent configuration. Patch this object to enable voice, change the greeting, or adjust call limits.
17 properties
enabledbooleanrequiredWhether the agent handles voice calls. When false, the sender's number is not answered by the voice agent and outbound calls are rejected.
greetingstringOpening line the agent speaks when the call connects. If omitted, the agent waits for the caller to speak first.
Limitsmax length 1000greetingsobjectGreeting per language, keyed by language code. Used when the caller's language differs from the one
greetingis written in.1 properties
{key}string
languagestringBCP-47 language code used for both speech recognition and speech synthesis (e.g.
en,es,pt-BR). Auto-detected from the recipient when omitted.modelstringModel that runs the conversation, co-located in the voice network for lowest latency. Independent of the model used for text messaging. Derived from the agent's text model when omitted.
sttProviderstringSpeech-recognition provider. Uses the default when omitted.
sttModelstringSpeech-recognition model. Uses the default when omitted.
ttsProviderstringSpeech-synthesis provider. Uses the default when omitted.
ttsVoiceIdstringIdentifier of the synthesized voice that speaks. Choose from the voices available in the dashboard. Uses a neutral default when omitted.
voiceSpeednumberSpeech rate. 1.0 is natural. Only honoured by voices that support rate control; ignored by the others.
Default1Limitsmin 0.5 · max 1.5interruptiblebooleanWhether the caller can interrupt the agent while it is speaking (barge-in). When true, the agent stops talking as soon as the caller starts.
DefaulttruemaxCallDurationMinutesintegerHard limit on call length in minutes. The call ends automatically when reached.
Default15Limitsmin 1 · max 120maxIdleSecondsintegerHow long the agent waits during silence before ending the call.
Default30Limitsmin 5 · max 300recordCallsbooleanWhether the call audio is recorded.
voicemailActionstringWhat the agent does when an answering machine or voicemail is detected on an outbound call.
One ofhangupleave_messageDefaulthangupvoicemailMessagestringMessage spoken when
voicemailActionisleave_message. Falls back togreetingwhen omitted.Limitsmax length 1000transferPhoneNumberstringE.164 phone number the agent can transfer the call to. When set, the agent is given a transfer tool it can use to hand the call to a human.
Responses
200Agent updated.
agentobjectrequiredAI Agent configuration for a sender.
18 properties
idstringrequiredsenderIdstringThe sender the agent was created on, its primary. Absent on an agent created with
POST /v1/agents, which has no primary even after senders are connected to it.senderIdslists every sender the agent answers on.namestringrequiredenabledbooleanrequiredWhether the agent is active.
providerstringrequiredLLM provider for the AI agent.
One ofopenaianthropicgooglemistralzavumodelstringrequiredModel ID (e.g., gpt-4o-mini, claude-3-5-sonnet).
systemPromptstringrequiredSystem prompt for the agent.
contextWindowMessagesintegerNumber of previous messages to include as context.
Default10includeContactMetadatabooleanWhether to include contact metadata in context.
DefaulttruemaxTokensintegerMaximum tokens for LLM response.
temperaturenumberLLM temperature (0-2).
triggerOnChannelsstring[]Channels that trigger the agent.
triggerOnMessageTypesstring[]Message types that trigger the agent.
statsobject3 properties
totalInvocationsintegertotalTokensUsedintegertotalCostnumberTotal cost in USD.
createdAtstring<date-time>requiredupdatedAtstring<date-time>requiredvoiceobjectVoice Agent configuration. When present and enabled, the agent can answer inbound phone calls and place outbound calls with Zavu's managed voice pipeline.
17 properties
enabledbooleanrequiredWhether the agent handles voice calls. When false, the sender's number is not answered by the voice agent and outbound calls are rejected.
greetingstringOpening line the agent speaks when the call connects. If omitted, the agent waits for the caller to speak first.
Limitsmax length 1000greetingsobjectGreeting per language, keyed by language code. Used when the caller's language differs from the one
greetingis written in.1 properties
{key}string
languagestringBCP-47 language code used for both speech recognition and speech synthesis (e.g.
en,es,pt-BR). Auto-detected from the recipient when omitted.modelstringModel that runs the conversation, co-located in the voice network for lowest latency. Independent of the model used for text messaging. Derived from the agent's text model when omitted.
sttProviderstringSpeech-recognition provider. Uses the default when omitted.
sttModelstringSpeech-recognition model. Uses the default when omitted.
ttsProviderstringSpeech-synthesis provider. Uses the default when omitted.
ttsVoiceIdstringIdentifier of the synthesized voice that speaks. Choose from the voices available in the dashboard. Uses a neutral default when omitted.
voiceSpeednumberSpeech rate. 1.0 is natural. Only honoured by voices that support rate control; ignored by the others.
Default1Limitsmin 0.5 · max 1.5interruptiblebooleanWhether the caller can interrupt the agent while it is speaking (barge-in). When true, the agent stops talking as soon as the caller starts.
DefaulttruemaxCallDurationMinutesintegerHard limit on call length in minutes. The call ends automatically when reached.
Default15Limitsmin 1 · max 120maxIdleSecondsintegerHow long the agent waits during silence before ending the call.
Default30Limitsmin 5 · max 300recordCallsbooleanWhether the call audio is recorded.
voicemailActionstringWhat the agent does when an answering machine or voicemail is detected on an outbound call.
One ofhangupleave_messageDefaulthangupvoicemailMessagestringMessage spoken when
voicemailActionisleave_message. Falls back togreetingwhen omitted.Limitsmax length 1000transferPhoneNumberstringE.164 phone number the agent can transfer the call to. When set, the agent is given a transfer tool it can use to hand the call to a human.
senderIdsstring[]Senders this agent answers on. An agent can serve several;
senderIdremains the primary one, for compatibility.
400Invalid request.
codestringrequiredmessagestringrequireddetailsobject
401Unauthorized.
codestringrequiredmessagestringrequireddetailsobject
404Agent not found.
codestringrequiredmessagestringrequireddetailsobject