Cancel a one-off task

curl --request DELETE \
  --url https://client-api.salesfinity.co/v2/sequencer/tasks/{id} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "user_id": "507f1f77bcf86cd799439011"
}
'

import requests

url = "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}"

payload = { "user_id": "507f1f77bcf86cd799439011" }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.delete(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'DELETE',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({user_id: '507f1f77bcf86cd799439011'})
};

fetch('https://client-api.salesfinity.co/v2/sequencer/tasks/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_POSTFIELDS => json_encode([
    'user_id' => '507f1f77bcf86cd799439011'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}"

	payload := strings.NewReader("{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}")

	req, _ := http.NewRequest("DELETE", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.delete("https://client-api.salesfinity.co/v2/sequencer/tasks/{id}")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://client-api.salesfinity.co/v2/sequencer/tasks/{id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Delete.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}"

response = http.request(request)
puts response.read_body

{
  "deleted": true
}

{
  "message": [
    "user_id must be object id"
  ],
  "error": "Bad Request",
  "statusCode": 400,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "The acting user is not an active member of this team",
  "error": "Forbidden",
  "statusCode": 403,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequence task not found",
  "error": "Not Found",
  "statusCode": 404,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Task is already cancelled",
  "error": "Conflict",
  "statusCode": 409,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "A sequence task cannot be deleted — snooze it, or remove the prospect from the sequence",
  "error": "Unprocessable Entity",
  "statusCode": 422,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Rate limit of 300 requests per minute exceeded. Retry in 12s.",
  "error": "Too Many Requests",
  "statusCode": 429,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Internal server error",
  "error": "Internal Server Error",
  "statusCode": 500,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequencer service unreachable",
  "error": "Bad Gateway",
  "statusCode": 502,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequencer service timed out",
  "error": "Gateway Timeout",
  "statusCode": 504,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

Tasks

Cancel a one-off task

Cancels an open one-off task: it moves to cancelled rather than being deleted, so queue counts and the timeline keep it, and a call task leaves the dial list. Returns { "deleted": true }.

A task from a sequence cannot be cancelled here (422): skip it, or remove the prospect from the sequence. A task already completed, skipped, expired or cancelled returns 409, so a repeat after success is a 409, not a second cancellation. Only the task’s assignee, whoever created it, or a team admin can cancel it.

The cancellation is recorded on the task’s timeline as task_skipped with payload.reason deleted. The body must carry user_id, so make sure your HTTP client sends a body with DELETE. Counts against the Sequencer writes rate limit.

DELETE

sequencer

tasks

{id}

Cancel a one-off task

curl --request DELETE \
  --url https://client-api.salesfinity.co/v2/sequencer/tasks/{id} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "user_id": "507f1f77bcf86cd799439011"
}
'

import requests

url = "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}"

payload = { "user_id": "507f1f77bcf86cd799439011" }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.delete(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'DELETE',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({user_id: '507f1f77bcf86cd799439011'})
};

fetch('https://client-api.salesfinity.co/v2/sequencer/tasks/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_POSTFIELDS => json_encode([
    'user_id' => '507f1f77bcf86cd799439011'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://client-api.salesfinity.co/v2/sequencer/tasks/{id}"

	payload := strings.NewReader("{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}")

	req, _ := http.NewRequest("DELETE", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.delete("https://client-api.salesfinity.co/v2/sequencer/tasks/{id}")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://client-api.salesfinity.co/v2/sequencer/tasks/{id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Delete.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"user_id\": \"507f1f77bcf86cd799439011\"\n}"

response = http.request(request)
puts response.read_body

{
  "deleted": true
}

{
  "message": [
    "user_id must be object id"
  ],
  "error": "Bad Request",
  "statusCode": 400,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "The acting user is not an active member of this team",
  "error": "Forbidden",
  "statusCode": 403,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequence task not found",
  "error": "Not Found",
  "statusCode": 404,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Task is already cancelled",
  "error": "Conflict",
  "statusCode": 409,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "A sequence task cannot be deleted — snooze it, or remove the prospect from the sequence",
  "error": "Unprocessable Entity",
  "statusCode": 422,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Rate limit of 300 requests per minute exceeded. Retry in 12s.",
  "error": "Too Many Requests",
  "statusCode": 429,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Internal server error",
  "error": "Internal Server Error",
  "statusCode": 500,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequencer service unreachable",
  "error": "Bad Gateway",
  "statusCode": 502,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

{
  "message": "Sequencer service timed out",
  "error": "Gateway Timeout",
  "statusCode": 504,
  "request_id": "0f6d3c52-9f3e-4c1a-a4b8-2b1f7e5d9c10"
}

Withdraws a one-off task. The task is kept with state cancelled, so reports and the timeline still show that it existed and was dropped.

Example

curl -X DELETE https://client-api.salesfinity.co/v2/sequencer/tasks/TASK_ID \
  -H 'x-api-key: YOUR_API_KEY' -H 'content-type: application/json' \
  -d '{ "user_id": "USER_ID" }'

The JSON body is required. Some HTTP clients drop the body of a DELETE unless you send it explicitly.

Good to know

Tasks from a sequence are refused with 422. Skip them, or remove the prospect from the sequence.
Cancelling a task that is already resolved returns 409, so a repeated request is a 409 rather than a second cancellation.
A call task is removed from the dial list.

Authorizations

x-api-key

string

header

required

Team-scoped API key generated in the Salesfinity dashboard under Settings → Connections → API & Webhooks. A missing or invalid key returns HTTP 403.

Path Parameters

string

required

24-character task id.

Body

application/json

user_id

string

required

The team member this call acts as. Must be an active member of the team the API key belongs to.

Example:

"507f1f77bcf86cd799439011"

Response

The task was cancelled.

deleted

enum<boolean>

required

Always true.

Available options:

true

Get started

MCP server

MCP reference

MCP use cases

Dialer API

Calls and analytics API

Enrichment API

Sequencer API

Cancel a one-off task

Example

Good to know

Authorizations

Path Parameters

Body

Response

​Example

​Good to know

Authorizations

Path Parameters

Body

Response

Example

Good to know