Create agent

curl --request POST \
  --url https://api.agents.slng.ai/v1/agents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "name": "Appointment Reminder",
  "system_prompt": "You are a friendly appointment reminder for {{clinic_name}}. Confirm the patient's upcoming visit or help them reschedule. Keep responses to one or two sentences.",
  "greeting": "Hi {{patient_name}}, this is a reminder from {{clinic_name}} about your upcoming appointment.",
  "language": "en",
  "region": "eu-central",
  "models": {
    "stt": "slng/deepgram/nova:3-en",
    "llm": "groq/openai/gpt-oss-120b",
    "tts": "slng/deepgram/aura:2-en",
    "tts_voice": "aura-2-thalia-en"
  },
  "template_defaults": {
    "clinic_name": "Downtown Health Clinic",
    "patient_name": "there"
  }
}
EOF

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "organisation_id": "550e8400-e29b-41d4-a716-446655440000",
  "name": "<string>",
  "system_prompt": "<string>",
  "greeting": "<string>",
  "language": "<string>",
  "region": "<string>",
  "models": {
    "stt": "slng/deepgram/nova:3-en",
    "llm": "groq/openai/gpt-oss-120b",
    "tts": "slng/deepgram/aura:2-en",
    "tts_voice": "aura-2-thalia-en",
    "stt_kwargs": {},
    "llm_kwargs": {},
    "tts_kwargs": {},
    "fallbacks": {
      "stt": [],
      "llm": [],
      "tts": []
    },
    "stt_final_timeout_s": 1,
    "llm_first_token_timeout_s": 1,
    "tts_first_audio_timeout_s": 1,
    "failure_audio_enabled": true
  },
  "idle_nudges": {
    "first_nudge_text": "<string>",
    "second_nudge_text": "<string>",
    "final_hangup_text": "<string>",
    "enabled": true,
    "first_nudge_delay_seconds": 15,
    "second_nudge_delay_seconds": 30,
    "hangup_delay_seconds": 15
  },
  "enable_interruptions": true,
  "tools": [
    {
      "type": "template",
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "prompt": "<string>",
      "execution_policy": {
        "pre_action_message": {
          "enabled": false,
          "text": "<string>"
        }
      }
    }
  ],
  "template_variables": {},
  "created_at": "2026-01-15T10:30:00Z",
  "updated_at": "2026-01-15T10:30:00Z",
  "inbound_greeting": "<string>",
  "outbound_greeting": "<string>",
  "sip_inbound_trunk_id": "550e8400-e29b-41d4-a716-446655440000",
  "sip_outbound_trunk_id": "550e8400-e29b-41d4-a716-446655440000",
  "runtime_variables": [
    {
      "name": "<string>",
      "description": "<string>"
    }
  ],
  "deleted_at": "2026-01-15T10:30:00Z"
}

POST

agents

curl --request POST \
  --url https://api.agents.slng.ai/v1/agents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "name": "Appointment Reminder",
  "system_prompt": "You are a friendly appointment reminder for {{clinic_name}}. Confirm the patient's upcoming visit or help them reschedule. Keep responses to one or two sentences.",
  "greeting": "Hi {{patient_name}}, this is a reminder from {{clinic_name}} about your upcoming appointment.",
  "language": "en",
  "region": "eu-central",
  "models": {
    "stt": "slng/deepgram/nova:3-en",
    "llm": "groq/openai/gpt-oss-120b",
    "tts": "slng/deepgram/aura:2-en",
    "tts_voice": "aura-2-thalia-en"
  },
  "template_defaults": {
    "clinic_name": "Downtown Health Clinic",
    "patient_name": "there"
  }
}
EOF

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "organisation_id": "550e8400-e29b-41d4-a716-446655440000",
  "name": "<string>",
  "system_prompt": "<string>",
  "greeting": "<string>",
  "language": "<string>",
  "region": "<string>",
  "models": {
    "stt": "slng/deepgram/nova:3-en",
    "llm": "groq/openai/gpt-oss-120b",
    "tts": "slng/deepgram/aura:2-en",
    "tts_voice": "aura-2-thalia-en",
    "stt_kwargs": {},
    "llm_kwargs": {},
    "tts_kwargs": {},
    "fallbacks": {
      "stt": [],
      "llm": [],
      "tts": []
    },
    "stt_final_timeout_s": 1,
    "llm_first_token_timeout_s": 1,
    "tts_first_audio_timeout_s": 1,
    "failure_audio_enabled": true
  },
  "idle_nudges": {
    "first_nudge_text": "<string>",
    "second_nudge_text": "<string>",
    "final_hangup_text": "<string>",
    "enabled": true,
    "first_nudge_delay_seconds": 15,
    "second_nudge_delay_seconds": 30,
    "hangup_delay_seconds": 15
  },
  "enable_interruptions": true,
  "tools": [
    {
      "type": "template",
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "prompt": "<string>",
      "execution_policy": {
        "pre_action_message": {
          "enabled": false,
          "text": "<string>"
        }
      }
    }
  ],
  "template_variables": {},
  "created_at": "2026-01-15T10:30:00Z",
  "updated_at": "2026-01-15T10:30:00Z",
  "inbound_greeting": "<string>",
  "outbound_greeting": "<string>",
  "sip_inbound_trunk_id": "550e8400-e29b-41d4-a716-446655440000",
  "sip_outbound_trunk_id": "550e8400-e29b-41d4-a716-446655440000",
  "runtime_variables": [
    {
      "name": "<string>",
      "description": "<string>"
    }
  ],
  "deleted_at": "2026-01-15T10:30:00Z"
}

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

name

string

required

Maximum string length: 255

system_prompt

string

required

System prompt (Handlebars template).

greeting

string

required

Default greeting.

language

string

required

Maximum string length: 10

region

enum<string>

required

Region where the agent runs.

Available options:

us-east,

eu-central,

ap-south

models

object

required

Model configuration for the agent runtime (STT + LLM + TTS).

Show child attributes

inbound_greeting

string | null

Optional greeting override for inbound calls.

outbound_greeting

string | null

Optional greeting override for outbound calls.

idle_nudges

object | null

Optional silence recovery behavior. The runtime can send two follow-up nudges, then speak a final message and hang up.

Show child attributes

enable_interruptions

boolean

default:true

tools

(Template tool · object | Utility tool · object | Webhook · object | Human transfer · object)[]

Built-in call control tools (hangup, voicemail detection).

Template tool
Utility tool
Webhook
Human transfer

Show child attributes

sip_inbound_trunk_id

string<uuid> | null

Example:

"550e8400-e29b-41d4-a716-446655440000"

sip_outbound_trunk_id

string<uuid> | null

Example:

"550e8400-e29b-41d4-a716-446655440000"

template_defaults

object

Show child attributes

runtime_variables

object[]

Show child attributes

Response

Agent created.

string<uuid>

required

Example:

"550e8400-e29b-41d4-a716-446655440000"

organisation_id

string<uuid>

required

Example:

"550e8400-e29b-41d4-a716-446655440000"

name

string

required

system_prompt

string

required

greeting

string

required

language

string

required

region

string

required

models

object

required

Model configuration for the agent runtime (STT + LLM + TTS).

Show child attributes

idle_nudges

object

required

Optional silence recovery behavior. The runtime can send two follow-up nudges, then speak a final message and hang up.

Show child attributes

enable_interruptions

boolean

required

tools

(Template tool · object | Utility tool · object | Webhook · object | Human transfer · object)[]

required

Template tool
Utility tool
Webhook
Human transfer

Show child attributes

template_variables

object

required

Show child attributes

created_at

string<date-time>

required

Example:

"2026-01-15T10:30:00Z"

updated_at

string<date-time>

required

Example:

"2026-01-15T10:30:00Z"

inbound_greeting

string | null

outbound_greeting

string | null

sip_inbound_trunk_id

string<uuid> | null

Example:

"550e8400-e29b-41d4-a716-446655440000"

sip_outbound_trunk_id

string<uuid> | null

Example:

"550e8400-e29b-41d4-a716-446655440000"

runtime_variables

object[]

Show child attributes

deleted_at

string<date-time> | null

Example:

"2026-01-15T10:30:00Z"

List agents Get agent

⌘I

Overview

Unified API

Text-to-Speech

Speech-to-Text

Voice Agents

Batch

Account

Bridges

Authorizations

Body

Response