curl --request POST \
  --url https://www.trysignalbase.com/api/v2/signals/custom/definitions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "name": "First sales leader",
  "description": "The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies."
}
EOF

import requests

url = "https://www.trysignalbase.com/api/v2/signals/custom/definitions"

payload = {
    "name": "First sales leader",
    "description": "The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies."
}
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({
    name: 'First sales leader',
    description: 'The author\'s own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.'
  })
};

fetch('https://www.trysignalbase.com/api/v2/signals/custom/definitions', 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://www.trysignalbase.com/api/v2/signals/custom/definitions",
  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([
    'name' => 'First sales leader',
    'description' => 'The author\'s own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.'
  ]),
  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://www.trysignalbase.com/api/v2/signals/custom/definitions"

	payload := strings.NewReader("{\n  \"name\": \"First sales leader\",\n  \"description\": \"The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.\"\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://www.trysignalbase.com/api/v2/signals/custom/definitions")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"First sales leader\",\n  \"description\": \"The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.trysignalbase.com/api/v2/signals/custom/definitions")

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  \"name\": \"First sales leader\",\n  \"description\": \"The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.\"\n}"

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

{
  "success": true,
  "data": {
    "slug": "first_sales_leader_x7k2",
    "name": "First sales leader",
    "description": "",
    "sourceDescription": "The author's own company announces hiring its first sales leader or is building its first sales team: a first VP Sales, Head of Sales, CRO or founding account executive. Exclude ordinary sales hires at companies that already have a sales team, and recruiter posts about other companies.",
    "status": "compiling",
    "scope": "team",
    "attributes": [],
    "keywordCount": 0,
    "restricted": false,
    "monitorId": null,
    "compileError": null,
    "test": null,
    "lastRunAt": null,
    "lastRunStats": null,
    "activatedAt": null,
    "createdAt": "2026-11-10T09:12:04.000Z",
    "signals30d": 0,
    "signalsTotal": 0,
    "lastSignalAt": null,
    "attached": null,
    "nextStep": "The definition is being compiled into search phrases and a matching rule. Read it again in a minute; it moves to testing, then ready."
  },
  "meta": {
    "endpoint": "customSignals.create",
    "creditsUsed": 0
  }
}

{
  "success": false,
  "error": "You can have 3 custom signals. Remove one to add another."
}

{
  "success": false,
  "error": "Invalid API key"
}

{
  "success": false,
  "error": "Custom signals are part of the Pro plan."
}

{
  "success": false,
  "error": "Custom signal not found"
}

{
  "success": false,
  "error": "Rate limit exceeded"
}

{
  "success": false,
  "error": "Internal server error"
}