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POST
/
v1
/
agents
Create Agent
curl --request POST \
  --url https://api.oneinbox.ai/v1/agents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "llm_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "webhook_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "transcriber": {
    "provider": "deepgram",
    "model": "nova-3",
    "language": "en"
  },
  "tts": {
    "provider": "deepgram",
    "credential_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "voice_id": "<string>",
    "speed": 1,
    "stability": 0.5
  },
  "first_message": "<string>",
  "end_call_phrases": [
    "<string>"
  ],
  "max_duration_seconds": 600,
  "interruption_sensitivity": 0.5,
  "silence_timeout_seconds": 10,
  "enable_recording": false,
  "language": "en",
  "dynamic_variables": {},
  "voicemail_detection": false,
  "voicemail_message": "<string>",
  "responsiveness": 0.5,
  "speed": 1,
  "background_sound": "<string>",
  "emotions": false,
  "job_description": "<string>",
  "metadata": {}
}
'
{
  "id": "<string>",
  "name": "<string>",
  "llm_id": "<string>",
  "webhook_id": "<string>",
  "transcriber": {},
  "tts": {},
  "first_message": "<string>",
  "end_call_phrases": [
    "<string>"
  ],
  "max_duration_seconds": 123,
  "interruption_sensitivity": 123,
  "silence_timeout_seconds": 123,
  "enable_recording": true,
  "language": "<string>",
  "dynamic_variables": {},
  "voicemail_detection": true,
  "voicemail_message": "<string>",
  "responsiveness": 123,
  "speed": 123,
  "background_sound": "<string>",
  "emotions": true,
  "job_description": "<string>",
  "metadata": {},
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "effective_system_prompt": "<string>"
}

Authorizations

​
Authorization
string
header
required

Your API key sent as a Bearer credential — Authorization: Bearer <api_key>, where <api_key> starts with oi_sk_ (create one via POST /v1/api-keys). Although the field is labelled 'token', paste your API key here. A dashboard JWT is also accepted on this header for the same endpoints.

Body

application/json
​
name
string
required
Required string length: 1 - 255
​
llm_id
string<uuid> | null

UUID of an LLM model from GET /v1/llm-models. Omit to use the platform-default LLM (OpenAI gpt-4o-mini) so a new user can create an agent with just name and start a web call.

​
webhook_id
string<uuid> | null
​
transcriber
TranscriberConfig · object
​
tts
TTSConfig · object
​
first_message
string | null
​
end_call_phrases
string[]
​
max_duration_seconds
integer
default:600
Required range: 30 <= x <= 7200
​
interruption_sensitivity
number
default:0.5
Required range: 0 <= x <= 1
​
silence_timeout_seconds
integer
default:10
Required range: 1 <= x <= 300
​
enable_recording
boolean
default:false
​
language
string
default:en
Required string length: 2 - 8
​
dynamic_variables
Dynamic Variables · object

Template variables interpolated into system_prompt and first_message. Use {{var_name}} placeholders (legacy single-brace {var_name} also works). Per-call variables override these at dispatch time.

​
voicemail_detection
boolean
default:false
​
voicemail_message
string | null
​
responsiveness
number
default:0.5

0=patient, 1=snappy. Maps to worker min_endpointing_delay.

Required range: 0 <= x <= 1
​
speed
number
default:1

Top-level speech rate. Overrides tts.speed at the worker when non-default.

Required range: 0.5 <= x <= 2
​
background_sound
string | null

None, 'office', 'cafe', etc. Store-only this iteration.

Maximum string length: 64
​
emotions
boolean
default:false
​
job_description
string | null

Free-form role context. Prepended to system_prompt at the worker.

​
metadata
Metadata · object

Response

Successful Response

​
id
string
required
​
name
string
required
​
llm_id
string
required
​
webhook_id
string | null
required
​
transcriber
Transcriber · object
required
​
tts
Tts · object
required
​
first_message
string | null
required
​
end_call_phrases
string[]
required
​
max_duration_seconds
integer
required
​
interruption_sensitivity
number
required
​
silence_timeout_seconds
integer
required
​
enable_recording
boolean
required
​
language
string
required
​
dynamic_variables
Dynamic Variables · object
required
​
voicemail_detection
boolean
required
​
voicemail_message
string | null
required
​
responsiveness
number
required
​
speed
number
required
​
background_sound
string | null
required
​
emotions
boolean
required
​
job_description
string | null
required
​
metadata
Metadata · object
required
​
created_at
string<date-time>
required
​
updated_at
string<date-time>
required
​
effective_system_prompt
string | null

Read-only. The system prompt the agent is actually given at call time: the linked LLM model's system_prompt with job_description prepended as a # Role block — exactly as the worker assembles it. Per-call dynamic-variable interpolation and knowledge-base chunks are resolved at runtime and not reflected here. Populated on GET /v1/agents/{id}; null on list responses.