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PUT
/
v1
/
agents
/
{agent_id}
Update agent
curl --request PUT \
  --url https://api.nixflex.com/v1/agents/{agent_id}
Updates an agent’s configuration. Only include fields you want to change — omitted fields keep their current values.

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Request

curl -X PUT https://api.nixflex.com/v1/agents/agent_125207e452f8714a \
  -H "Authorization: Bearer KEY_ID:KEY_SECRET" \
  -H "Content-Type: application/json" \
  -d '{
    "welcome_message": "Hi, Acme Dental, how may I help you today?",
    "response_length": "short"
  }'

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Body parameters

Any field from Create agent can be updated. Pass only the fields you want to change.

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Response

200 OK — returns the updated agent object.

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Behaviour

  • Active calls are unaffected. Updating an agent while a call is in progress doesn’t change behaviour mid-call. New calls use the new config.
  • agent_id and api_key_id are immutable. Trying to change them is ignored.
  • No partial validation. If you submit an invalid value for any field, the whole update fails.

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Errors

CodeCause
agent_not_foundID doesn’t exist or isn’t yours
prompt_too_longNew system_prompt exceeds limit
invalid_voice_idVoice not supported