Place Click-to-Call

curl -X POST https://api.60db.ai/dialer/click2call \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_number": "9812345678",
    "customer_number": "9876543210",
    "callback_url": "https://your-app.example.com/webhooks/qcall",
    "callback_secret": "a-long-random-string-you-choose",
    "agent_ring_timeout": 30,
    "customer_ring_timeout": 45,
    "max_duration": 3600,
    "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" }
  }'

const res = await fetch('https://api.60db.ai/dialer/click2call', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.SIXTYDB_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    agent_number: '9812345678',
    customer_number: '9876543210',
    callback_url: 'https://your-app.example.com/webhooks/qcall',
    callback_secret: process.env.QCALL_WEBHOOK_SECRET,
    metadata: { lead_id: 'L-991' },
  }),
});

const { data } = await res.json();
if (data.replayed) console.log('already placed:', data.call.call_id);
else console.log('dialling:', data.call.call_id);

import os, requests

res = requests.post(
    "https://api.60db.ai/dialer/click2call",
    headers={"Authorization": f"Bearer {os.environ['SIXTYDB_API_KEY']}"},
    json={
        "agent_number": "9812345678",
        "customer_number": "9876543210",
        "callback_url": "https://your-app.example.com/webhooks/qcall",
        "callback_secret": os.environ["QCALL_WEBHOOK_SECRET"],
        "metadata": {"lead_id": "L-991"},
    },
)

data = res.json()["data"]
print(data["call"]["call_id"], "placed" if data["placed"] else "replayed")

{
  "success": true,
  "data": {
    "placed": true,
    "replayed": false,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "qc2c-8f1c1e2a-4b77-4a51-9f3e-2c1d6f0a77b1",
      "outbound_trunk_id": "00000000-0000-4000-8000-000000000000",
      "did": "+917900000000",
      "agent_number": "+919812345678",
      "customer_number": "+919876543210",
      "state": "initiated",
      "call_done": false,
      "terminal_event": null,
      "hangup_cause": null,
      "leg": null,
      "error": null,
      "error_detail": null,
      "talk_seconds": null,
      "total_seconds": null,
      "start_time": null,
      "answer_time": null,
      "end_time": null,
      "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" },
      "record_requested": false,
      "recording_id": null,
      "recording_status": null,
      "recording_available": false,
      "callback_url": "https://your-app.example.com/webhooks/qcall",
      "callback_secret_last4": "oose",
      "cost_usd": null,
      "billing_status": null,
      "placed_via": "api_key",
      "created_by_user_id": 4021,
      "api_key_id": 17,
      "api_key_name": "crm-integration",
      "created_at": "2026-09-23T14:11:27.134Z"
    }
  }
}

{
  "success": true,
  "data": {
    "placed": false,
    "replayed": true,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "crm-task-91823",
      "state": "initiated",
      "call_done": false
    }
  }
}

{
  "success": false,
  "message": "That reference has already been used for a call that has finished. A reference is permanent — place the call again to get a new one.",
  "code": "REFERENCE_ALREADY_USED"
}

POST

dialer

click2call

curl -X POST https://api.60db.ai/dialer/click2call \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_number": "9812345678",
    "customer_number": "9876543210",
    "callback_url": "https://your-app.example.com/webhooks/qcall",
    "callback_secret": "a-long-random-string-you-choose",
    "agent_ring_timeout": 30,
    "customer_ring_timeout": 45,
    "max_duration": 3600,
    "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" }
  }'

const res = await fetch('https://api.60db.ai/dialer/click2call', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.SIXTYDB_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    agent_number: '9812345678',
    customer_number: '9876543210',
    callback_url: 'https://your-app.example.com/webhooks/qcall',
    callback_secret: process.env.QCALL_WEBHOOK_SECRET,
    metadata: { lead_id: 'L-991' },
  }),
});

const { data } = await res.json();
if (data.replayed) console.log('already placed:', data.call.call_id);
else console.log('dialling:', data.call.call_id);

import os, requests

res = requests.post(
    "https://api.60db.ai/dialer/click2call",
    headers={"Authorization": f"Bearer {os.environ['SIXTYDB_API_KEY']}"},
    json={
        "agent_number": "9812345678",
        "customer_number": "9876543210",
        "callback_url": "https://your-app.example.com/webhooks/qcall",
        "callback_secret": os.environ["QCALL_WEBHOOK_SECRET"],
        "metadata": {"lead_id": "L-991"},
    },
)

data = res.json()["data"]
print(data["call"]["call_id"], "placed" if data["placed"] else "replayed")

{
  "success": true,
  "data": {
    "placed": true,
    "replayed": false,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "qc2c-8f1c1e2a-4b77-4a51-9f3e-2c1d6f0a77b1",
      "outbound_trunk_id": "00000000-0000-4000-8000-000000000000",
      "did": "+917900000000",
      "agent_number": "+919812345678",
      "customer_number": "+919876543210",
      "state": "initiated",
      "call_done": false,
      "terminal_event": null,
      "hangup_cause": null,
      "leg": null,
      "error": null,
      "error_detail": null,
      "talk_seconds": null,
      "total_seconds": null,
      "start_time": null,
      "answer_time": null,
      "end_time": null,
      "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" },
      "record_requested": false,
      "recording_id": null,
      "recording_status": null,
      "recording_available": false,
      "callback_url": "https://your-app.example.com/webhooks/qcall",
      "callback_secret_last4": "oose",
      "cost_usd": null,
      "billing_status": null,
      "placed_via": "api_key",
      "created_by_user_id": 4021,
      "api_key_id": 17,
      "api_key_name": "crm-integration",
      "created_at": "2026-09-23T14:11:27.134Z"
    }
  }
}

{
  "success": true,
  "data": {
    "placed": false,
    "replayed": true,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "crm-task-91823",
      "state": "initiated",
      "call_done": false
    }
  }
}

{
  "success": false,
  "message": "That reference has already been used for a call that has finished. A reference is permanent — place the call again to get a new one.",
  "code": "REFERENCE_ALREADY_USED"
}

One request places a two-leg call: the agent is dialled first on your DID, and only when they answer is the customer dialled and the legs bridged. Both legs present your DID as the caller ID. Requires a provisioned trunk (Gate T), a number assigned to that trunk, and a positive wallet balance. See the Click-to-Call guide for the full flow.

A reference_id is permanent, and a failed call still consumes it. Omit the field and one is minted per call, which is what you want unless you’re deliberately making a request repeatable. To retry after a call that rang out, place a new call with a new reference.

Request

Headers

string

required

Bearer token with your API key

Body

string

required

The person dialled first. Indian mobile number as +919812345678, 919812345678 or 9812345678. Spaces, hyphens, dots and brackets are stripped.

string

required

Dialled once the agent answers. Must differ from agent_number.

string

The caller ID presented on both legs. Must be a number assigned to your workspace and to outbound_trunk_id. Defaults to your trunk’s saved caller ID.

string

UUID of the outbound trunk to place the call over. Defaults to your workspace’s active trunk.

string

Your idempotency key, unique per trunk. 1–128 characters of A-Za-z0-9._:-. Minted for you (qc2c-<uuid>) when omitted.

string

Public HTTPS URL that this call’s events are relayed to. Requires callback_secret. Private, loopback, link-local and CGNAT addresses are rejected.

string

16–256 characters you choose. Required whenever callback_url is sent — it is the HMAC key your endpoint verifies x-qcall-signature against. Encrypted at rest and never returned; only its last four characters are readable afterwards.

integer

default:"30"

Seconds to ring the agent. 5–60.

integer

default:"45"

Seconds to ring the customer. 5–60.

integer

default:"3600"

Maximum seconds of bridged talk time. 30–7200.

boolean

default:"false"

Record the bridged conversation. Audio is uploaded after the call ends — poll the call with ?refresh=1, then mint a playback URL.

object

Arbitrary JSON object echoed back on the call and in every webhook. At most 2048 bytes serialised, no NUL characters.

Response

201 Created — a call was admitted and the agent is being dialled. 200 OK — this reference_id was already bound to a live call. The original call is returned and nothing new was dialled. The bodies are identical, so branch on data.placed / data.replayed rather than on the shape.

boolean

true when a new call was dialled (201)

boolean

true when an existing call was returned and nothing was dialled (200)

object

Show properties

string

Platform call id. Use it to poll, list events and mint recordings

string

Your idempotency key, or the one minted for you

string

The trunk this call rides

string

Caller ID presented on both legs, +E.164

string

+E.164

string

+E.164

string

pending, initiated, bridged, completed, failed, rejected or unknown

boolean

true once the outcome is final

string | null

call.completed, call.not_answered, call.failed or call.temporaryfailed

string | null

e.g. NORMAL_CLEARING, NO_ANSWER, USER_BUSY, MAX_DURATION

string | null

On failures: agent or customer — which side failed

string | null

Machine-readable failure code, if any

string | null

Human-readable detail for that failure

integer | null

Bridged talk time. This is what gets billed

integer | null

Seconds from admission to the end of the call

string | null

ISO 8601

string | null

ISO 8601. When the legs were bridged; null until then

string | null

ISO 8601. Present once the call has ended

object | null

Exactly what you sent

boolean

Whether this call asked to be recorded

string | null

Opaque id, once the platform has produced one

string | null

e.g. uploaded

boolean

true when a playback URL can be minted

string | null

Where this call’s events are relayed

string | null

Last four characters of the stored signing secret — enough to tell which secret we hold, never enough to sign with

number | null

What this call cost, in USD

string | null

billed, failed, or null when nothing was owed

string

api_key or session

integer | null

Which API key placed the call

string | null

That key’s name, snapshotted so a revoked key still explains its charges

integer | null

Who placed it

string

ISO 8601

Errors

Status	Code	Meaning
400	`INVALID_NUMBER`	A number isn’t a valid Indian mobile number
400	`SAME_NUMBER`	`agent_number` and `customer_number` are the same
400	`INVALID_RING_TIMEOUT`	Ring timeout outside 5–60 s
400	`INVALID_MAX_DURATION`	`max_duration` outside 30–7200 s
400	`INVALID_RECORD`	`record` isn’t a boolean
400	`INVALID_METADATA`	Not an object, over 2 KiB, or contains NUL
400	`INVALID_REFERENCE`	`reference_id` fails the character/length rule
400	`INVALID_CALLBACK_URL`	Not HTTPS, or not publicly resolvable
400	`INVALID_CALLBACK_SECRET`	Missing, or outside 16–256 characters
402	`RECHARGE_REQUIRED`	Wallet balance is `0` or less
403	`CALLER_ID_NOT_OWNED`	`did` isn’t assigned to this workspace
403	`destination_not_allowed`	A number is outside your permitted prefixes
404	`REFERENCE_NOT_OWNED`	That reference belongs to another workspace
409	`DIALER_NOT_PROVISIONED`	Trunk not set up (Gate T)
409	`REFERENCE_ALREADY_USED`	The reference is spent — place a new call
429	`C2C_RATE_LIMITED`	More than 20 calls placed in the last minute
429	`no_free_channel`	Platform capacity exhausted. Honour `Retry-After`
503	`CARRIER_LINE_DOWN`	Carrier line is down; your number and balance are fine
503	`C2C_NOT_CONFIGURED`	Click-to-call isn’t set up on the server
503	`C2C_CALLBACK_UNREACHABLE`	The server’s results address isn’t reachable from the internet
504	`C2C_OUTCOME_UNKNOWN`	No answer from the platform — check the agent’s phone before retrying

Failures return { "success": false, "message": "...", "code": "..." }, plus request_id when the refusal came from the call platform (log it — it’s the handle support traces on) and retry_after in seconds on 429/503.

429 and 503 also carry a Retry-After header. A refused request never placed a call and never consumed its reference_id, so it is safe to retry with the same one.

Example

curl -X POST https://api.60db.ai/dialer/click2call \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_number": "9812345678",
    "customer_number": "9876543210",
    "callback_url": "https://your-app.example.com/webhooks/qcall",
    "callback_secret": "a-long-random-string-you-choose",
    "agent_ring_timeout": 30,
    "customer_ring_timeout": 45,
    "max_duration": 3600,
    "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" }
  }'

const res = await fetch('https://api.60db.ai/dialer/click2call', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.SIXTYDB_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    agent_number: '9812345678',
    customer_number: '9876543210',
    callback_url: 'https://your-app.example.com/webhooks/qcall',
    callback_secret: process.env.QCALL_WEBHOOK_SECRET,
    metadata: { lead_id: 'L-991' },
  }),
});

const { data } = await res.json();
if (data.replayed) console.log('already placed:', data.call.call_id);
else console.log('dialling:', data.call.call_id);

import os, requests

res = requests.post(
    "https://api.60db.ai/dialer/click2call",
    headers={"Authorization": f"Bearer {os.environ['SIXTYDB_API_KEY']}"},
    json={
        "agent_number": "9812345678",
        "customer_number": "9876543210",
        "callback_url": "https://your-app.example.com/webhooks/qcall",
        "callback_secret": os.environ["QCALL_WEBHOOK_SECRET"],
        "metadata": {"lead_id": "L-991"},
    },
)

data = res.json()["data"]
print(data["call"]["call_id"], "placed" if data["placed"] else "replayed")

{
  "success": true,
  "data": {
    "placed": true,
    "replayed": false,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "qc2c-8f1c1e2a-4b77-4a51-9f3e-2c1d6f0a77b1",
      "outbound_trunk_id": "00000000-0000-4000-8000-000000000000",
      "did": "+917900000000",
      "agent_number": "+919812345678",
      "customer_number": "+919876543210",
      "state": "initiated",
      "call_done": false,
      "terminal_event": null,
      "hangup_cause": null,
      "leg": null,
      "error": null,
      "error_detail": null,
      "talk_seconds": null,
      "total_seconds": null,
      "start_time": null,
      "answer_time": null,
      "end_time": null,
      "metadata": { "lead_id": "L-991", "campaign": "q3-renewals" },
      "record_requested": false,
      "recording_id": null,
      "recording_status": null,
      "recording_available": false,
      "callback_url": "https://your-app.example.com/webhooks/qcall",
      "callback_secret_last4": "oose",
      "cost_usd": null,
      "billing_status": null,
      "placed_via": "api_key",
      "created_by_user_id": 4021,
      "api_key_id": 17,
      "api_key_name": "crm-integration",
      "created_at": "2026-09-23T14:11:27.134Z"
    }
  }
}

{
  "success": true,
  "data": {
    "placed": false,
    "replayed": true,
    "call": {
      "call_id": "7d004ba2-565f-4ee2-9aa2-19523d8db7ae",
      "reference_id": "crm-task-91823",
      "state": "initiated",
      "call_done": false
    }
  }
}

{
  "success": false,
  "message": "That reference has already been used for a call that has finished. A reference is permanent — place the call again to get a new one.",
  "code": "REFERENCE_ALREADY_USED"
}

API Documentation

WebSocket Reference

Text-to-Speech

Speech-to-Text

LLM & Chat

Memory & RAG

Judge

Models

Voices

Music

Dialer

Agents

60db Flow

Click-to-Call

WhatsApp

API Keys

Webhooks

Workspaces

Billing

Analytics

Place Click-to-Call

Request

Headers

Body

Response

Errors

Example

​Request

​Headers

​Body

​Response

​Errors

​Example

Request

Headers

Body

Response

Errors

Example