Run a workflow

curl --request POST \
  --url https://api.hitl.sh/v1/api/workflows/{id}/run \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "input": {
    "order_id": "ORD-48252",
    "customer": {
      "name": "Mary Jackson",
      "email": "mary@example.com"
    },
    "amount": 320,
    "currency": "USD",
    "reason": "Item never arrived."
  },
  "callback_url": "https://example.com/hitl/result"
}
'

import requests

url = "https://api.hitl.sh/v1/api/workflows/{id}/run"

payload = {
    "input": {
        "order_id": "ORD-48252",
        "customer": {
            "name": "Mary Jackson",
            "email": "mary@example.com"
        },
        "amount": 320,
        "currency": "USD",
        "reason": "Item never arrived."
    },
    "callback_url": "https://example.com/hitl/result"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    input: {
      order_id: 'ORD-48252',
      customer: {name: 'Mary Jackson', email: 'mary@example.com'},
      amount: 320,
      currency: 'USD',
      reason: 'Item never arrived.'
    },
    callback_url: 'https://example.com/hitl/result'
  })
};

fetch('https://api.hitl.sh/v1/api/workflows/{id}/run', 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://api.hitl.sh/v1/api/workflows/{id}/run",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'input' => [
        'order_id' => 'ORD-48252',
        'customer' => [
                'name' => 'Mary Jackson',
                'email' => 'mary@example.com'
        ],
        'amount' => 320,
        'currency' => 'USD',
        'reason' => 'Item never arrived.'
    ],
    'callback_url' => 'https://example.com/hitl/result'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://api.hitl.sh/v1/api/workflows/{id}/run"

	payload := strings.NewReader("{\n  \"input\": {\n    \"order_id\": \"ORD-48252\",\n    \"customer\": {\n      \"name\": \"Mary Jackson\",\n      \"email\": \"mary@example.com\"\n    },\n    \"amount\": 320,\n    \"currency\": \"USD\",\n    \"reason\": \"Item never arrived.\"\n  },\n  \"callback_url\": \"https://example.com/hitl/result\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.post("https://api.hitl.sh/v1/api/workflows/{id}/run")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"input\": {\n    \"order_id\": \"ORD-48252\",\n    \"customer\": {\n      \"name\": \"Mary Jackson\",\n      \"email\": \"mary@example.com\"\n    },\n    \"amount\": 320,\n    \"currency\": \"USD\",\n    \"reason\": \"Item never arrived.\"\n  },\n  \"callback_url\": \"https://example.com/hitl/result\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hitl.sh/v1/api/workflows/{id}/run")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"input\": {\n    \"order_id\": \"ORD-48252\",\n    \"customer\": {\n      \"name\": \"Mary Jackson\",\n      \"email\": \"mary@example.com\"\n    },\n    \"amount\": 320,\n    \"currency\": \"USD\",\n    \"reason\": \"Item never arrived.\"\n  },\n  \"callback_url\": \"https://example.com/hitl/result\"\n}"

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

{
  "error": false,
  "msg": "Workflow run started",
  "data": {
    "id": "6af2da4b2ce04c173fe49697",
    "workflow_id": "6af2ce4e8207961501f59472",
    "workflow_name": "Refund approval",
    "status": "running",
    "finished": false,
    "input": {
      "amount": 320,
      "currency": "USD",
      "customer": {
        "email": "mary@example.com",
        "name": "Mary Jackson"
      },
      "order_id": "ORD-48252",
      "reason": "Item never arrived."
    },
    "decisions": [],
    "action_results": [],
    "triggered_via": "api",
    "started_at": "2026-11-10T08:48:11.693Z",
    "completed_at": null
  }
}

{
  "error": true,
  "msg": "Invalid execution id"
}

{
  "error": true,
  "msg": "Invalid API key"
}

{
  "error": true,
  "code": "confirmation_required",
  "msg": "Confirm the signup first: ask your human for the code in the email"
}

{
  "error": true,
  "msg": "Workflow not found"
}

{
  "error": true,
  "msg": "Workflow is a draft: publish and activate it in the editor first",
  "status": "draft"
}

{
  "error": true,
  "msg": "Rate limit exceeded"
}

{
  "error": true,
  "msg": "<string>",
  "code": "<string>"
}